Choosing input/total tokens automatically based on available VRAM?

backends/client/src/v2/pb/generate.v2.rs

@@ -0,0 +1,613 @@
+// This file is @generated by prost-build.
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct HealthRequest {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct HealthResponse {}
+/// / Empty request
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct InfoRequest {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct InfoResponse {
+    #[prost(bool, tag = "1")]
+    pub requires_padding: bool,
+    #[prost(string, tag = "2")]
+    pub dtype: ::prost::alloc::string::String,
+    #[prost(string, tag = "3")]
+    pub device_type: ::prost::alloc::string::String,
+    #[prost(uint32, optional, tag = "4")]
+    pub window_size: ::core::option::Option<u32>,
+    #[prost(uint32, tag = "5")]
+    pub speculate: u32,
+}
+/// / Empty request
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ServiceDiscoveryRequest {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ServiceDiscoveryResponse {
+    /// / Other shards urls
+    #[prost(string, repeated, tag = "1")]
+    pub urls: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ClearCacheRequest {
+    /// / Optional batch id
+    #[prost(uint64, optional, tag = "1")]
+    pub id: ::core::option::Option<u64>,
+}
+/// / Empty response
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ClearCacheResponse {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct NextTokenChooserParameters {
+    /// / exponential scaling output probability distribution
+    #[prost(float, tag = "1")]
+    pub temperature: f32,
+    /// / restricting to the k highest probability elements
+    #[prost(uint32, tag = "2")]
+    pub top_k: u32,
+    /// / restricting to top tokens summing to prob_cut_off <= prob_cut_off
+    #[prost(float, tag = "3")]
+    pub top_p: f32,
+    /// / restricting to top tokens summing to prob_cut_off <= prob_cut_off
+    #[prost(float, tag = "4")]
+    pub typical_p: f32,
+    /// / apply sampling on the logits
+    #[prost(bool, tag = "5")]
+    pub do_sample: bool,
+    /// / random seed for sampling
+    #[prost(uint64, tag = "6")]
+    pub seed: u64,
+    /// / repetition penalty
+    #[prost(float, tag = "7")]
+    pub repetition_penalty: f32,
+    /// / frequency penalty
+    #[prost(float, tag = "9")]
+    pub frequency_penalty: f32,
+    /// / token watermarking using "A Watermark for Large Language Models"
+    #[prost(bool, tag = "8")]
+    pub watermark: bool,
+    /// / grammar (applied if not empty)
+    #[prost(string, tag = "10")]
+    pub grammar: ::prost::alloc::string::String,
+    /// / grammar type
+    #[prost(enumeration = "GrammarType", tag = "11")]
+    pub grammar_type: i32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct StoppingCriteriaParameters {
+    /// / Maximum number of generated tokens
+    #[prost(uint32, tag = "1")]
+    pub max_new_tokens: u32,
+    /// / Optional stopping sequences
+    #[prost(string, repeated, tag = "2")]
+    pub stop_sequences: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+    /// / Ignore end of sequence token
+    /// / used for benchmarking
+    #[prost(bool, tag = "3")]
+    pub ignore_eos_token: bool,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Request {
+    /// / Request ID
+    #[prost(uint64, tag = "1")]
+    pub id: u64,
+    /// / The generation context
+    #[prost(string, tag = "2")]
+    pub inputs: ::prost::alloc::string::String,
+    /// / Context truncation
+    #[prost(uint32, tag = "3")]
+    pub truncate: u32,
+    /// / Next Token Chooser Parameters
+    #[prost(message, optional, tag = "4")]
+    pub parameters: ::core::option::Option<NextTokenChooserParameters>,
+    /// / Stopping Criteria Parameters
+    #[prost(message, optional, tag = "5")]
+    pub stopping_parameters: ::core::option::Option<StoppingCriteriaParameters>,
+    /// / Return prefill logprobs
+    #[prost(bool, tag = "6")]
+    pub prefill_logprobs: bool,
+    /// / Return most likely n tokens
+    #[prost(uint32, tag = "7")]
+    pub top_n_tokens: u32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Batch {
+    /// / Batch ID
+    #[prost(uint64, tag = "1")]
+    pub id: u64,
+    /// / Individual requests
+    #[prost(message, repeated, tag = "2")]
+    pub requests: ::prost::alloc::vec::Vec<Request>,
+    /// / Batch size (==len(requests))
+    #[prost(uint32, tag = "3")]
+    pub size: u32,
+    /// / Maximum number of tokens this batch will grow to
+    #[prost(uint32, tag = "4")]
+    pub max_tokens: u32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct CachedBatch {
+    /// / Batch ID
+    #[prost(uint64, tag = "1")]
+    pub id: u64,
+    /// / Individual requests ids
+    #[prost(uint64, repeated, tag = "2")]
+    pub request_ids: ::prost::alloc::vec::Vec<u64>,
+    /// / Batch size (==len(requests))
+    #[prost(uint32, tag = "3")]
+    pub size: u32,
+    /// / Maximum number of tokens this batch will grow to
+    #[prost(uint32, tag = "4")]
+    pub max_tokens: u32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct GeneratedText {
+    /// / Output
+    #[prost(string, tag = "1")]
+    pub text: ::prost::alloc::string::String,
+    /// / Number of generated tokens
+    #[prost(uint32, tag = "2")]
+    pub generated_tokens: u32,
+    /// / Finish reason
+    #[prost(enumeration = "FinishReason", tag = "3")]
+    pub finish_reason: i32,
+    /// / Seed
+    #[prost(uint64, optional, tag = "4")]
+    pub seed: ::core::option::Option<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Tokens {
+    /// / Token IDs
+    #[prost(uint32, repeated, tag = "1")]
+    pub ids: ::prost::alloc::vec::Vec<u32>,
+    /// / Logprobs
+    #[prost(float, repeated, tag = "2")]
+    pub logprobs: ::prost::alloc::vec::Vec<f32>,
+    /// / tokens
+    #[prost(string, repeated, tag = "3")]
+    pub texts: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+    /// / special
+    #[prost(bool, repeated, tag = "4")]
+    pub is_special: ::prost::alloc::vec::Vec<bool>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Generation {
+    /// / Request ID
+    #[prost(uint64, tag = "1")]
+    pub request_id: u64,
+    /// / Prefill tokens (optional)
+    #[prost(message, optional, tag = "2")]
+    pub prefill_tokens: ::core::option::Option<Tokens>,
+    #[prost(message, optional, tag = "3")]
+    pub tokens: ::core::option::Option<Tokens>,
+    /// / Complete generated text
+    #[prost(message, optional, tag = "4")]
+    pub generated_text: ::core::option::Option<GeneratedText>,
+    /// / Top tokens
+    #[prost(message, repeated, tag = "5")]
+    pub top_tokens: ::prost::alloc::vec::Vec<Tokens>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct FilterBatchRequest {
+    /// / Batch ID
+    #[prost(uint64, tag = "1")]
+    pub batch_id: u64,
+    /// / Requests to keep
+    #[prost(uint64, repeated, tag = "2")]
+    pub request_ids: ::prost::alloc::vec::Vec<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct FilterBatchResponse {
+    /// / Filtered Batch (cached)
+    #[prost(message, optional, tag = "1")]
+    pub batch: ::core::option::Option<CachedBatch>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PrefillRequest {
+    /// / Batch
+    #[prost(message, optional, tag = "1")]
+    pub batch: ::core::option::Option<Batch>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PrefillResponse {
+    /// / Generation
+    #[prost(message, repeated, tag = "1")]
+    pub generations: ::prost::alloc::vec::Vec<Generation>,
+    /// / Next batch (cached)
+    #[prost(message, optional, tag = "2")]
+    pub batch: ::core::option::Option<CachedBatch>,
+    /// / Forward elapsed time in nanoseconds
+    #[prost(uint64, tag = "3")]
+    pub forward_ns: u64,
+    /// / Decode elapsed time in nanoseconds
+    #[prost(uint64, tag = "4")]
+    pub decode_ns: u64,
+    /// / Total elapsed time in nanoseconds
+    #[prost(uint64, tag = "5")]
+    pub total_ns: u64,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DecodeRequest {
+    /// / Cached batches
+    #[prost(message, repeated, tag = "1")]
+    pub batches: ::prost::alloc::vec::Vec<CachedBatch>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DecodeResponse {
+    /// / Decodes
+    #[prost(message, repeated, tag = "1")]
+    pub generations: ::prost::alloc::vec::Vec<Generation>,
+    /// / Next batch (cached)
+    #[prost(message, optional, tag = "2")]
+    pub batch: ::core::option::Option<CachedBatch>,
+    /// / Forward elapsed time in nanoseconds
+    #[prost(uint64, tag = "3")]
+    pub forward_ns: u64,
+    /// / Decode elapsed time in nanoseconds
+    #[prost(uint64, tag = "4")]
+    pub decode_ns: u64,
+    /// / Total elapsed time in nanoseconds
+    #[prost(uint64, tag = "5")]
+    pub total_ns: u64,
+    /// / Concatenate elapsed time in nanoseconds
+    #[prost(uint64, optional, tag = "6")]
+    pub concat_ns: ::core::option::Option<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct WarmupRequest {
+    /// / Batch to warmup on
+    #[prost(message, optional, tag = "1")]
+    pub batch: ::core::option::Option<Batch>,
+    #[prost(uint32, tag = "2")]
+    pub max_input_length: u32,
+    #[prost(uint32, tag = "3")]
+    pub max_prefill_tokens: u32,
+    #[prost(uint32, tag = "4")]
+    pub max_total_tokens: u32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct WarmupResponse {
+    /// / Maximum number of tokens supported by the model
+    #[prost(uint32, optional, tag = "1")]
+    pub max_supported_total_tokens: ::core::option::Option<u32>,
+}
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, ::prost::Enumeration)]
+#[repr(i32)]
+pub enum GrammarType {
+    None = 0,
+    Json = 1,
+    Regex = 2,
+}
+impl GrammarType {
+    /// String value of the enum field names used in the ProtoBuf definition.
+    ///
+    /// The values are not transformed in any way and thus are considered stable
+    /// (if the ProtoBuf definition does not change) and safe for programmatic use.
+    pub fn as_str_name(&self) -> &'static str {
+        match self {
+            GrammarType::None => "GRAMMAR_TYPE_NONE",
+            GrammarType::Json => "GRAMMAR_TYPE_JSON",
+            GrammarType::Regex => "GRAMMAR_TYPE_REGEX",
+        }
+    }
+    /// Creates an enum from field names used in the ProtoBuf definition.
+    pub fn from_str_name(value: &str) -> ::core::option::Option<Self> {
+        match value {
+            "GRAMMAR_TYPE_NONE" => Some(Self::None),
+            "GRAMMAR_TYPE_JSON" => Some(Self::Json),
+            "GRAMMAR_TYPE_REGEX" => Some(Self::Regex),
+            _ => None,
+        }
+    }
+}
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, ::prost::Enumeration)]
+#[repr(i32)]
+pub enum FinishReason {
+    Length = 0,
+    EosToken = 1,
+    StopSequence = 2,
+}
+impl FinishReason {
+    /// String value of the enum field names used in the ProtoBuf definition.
+    ///
+    /// The values are not transformed in any way and thus are considered stable
+    /// (if the ProtoBuf definition does not change) and safe for programmatic use.
+    pub fn as_str_name(&self) -> &'static str {
+        match self {
+            FinishReason::Length => "FINISH_REASON_LENGTH",
+            FinishReason::EosToken => "FINISH_REASON_EOS_TOKEN",
+            FinishReason::StopSequence => "FINISH_REASON_STOP_SEQUENCE",
+        }
+    }
+    /// Creates an enum from field names used in the ProtoBuf definition.
+    pub fn from_str_name(value: &str) -> ::core::option::Option<Self> {
+        match value {
+            "FINISH_REASON_LENGTH" => Some(Self::Length),
+            "FINISH_REASON_EOS_TOKEN" => Some(Self::EosToken),
+            "FINISH_REASON_STOP_SEQUENCE" => Some(Self::StopSequence),
+            _ => None,
+        }
+    }
+}
+/// Generated client implementations.
+pub mod text_generation_service_client {
+    #![allow(unused_variables, dead_code, missing_docs, clippy::let_unit_value)]
+    use tonic::codegen::http::Uri;
+    use tonic::codegen::*;
+    #[derive(Debug, Clone)]
+    pub struct TextGenerationServiceClient<T> {
+        inner: tonic::client::Grpc<T>,
+    }
+    impl TextGenerationServiceClient<tonic::transport::Channel> {
+        /// Attempt to create a new client by connecting to a given endpoint.
+        pub async fn connect<D>(dst: D) -> Result<Self, tonic::transport::Error>
+        where
+            D: TryInto<tonic::transport::Endpoint>,
+            D::Error: Into<StdError>,
+        {
+            let conn = tonic::transport::Endpoint::new(dst)?.connect().await?;
+            Ok(Self::new(conn))
+        }
+    }
+    impl<T> TextGenerationServiceClient<T>
+    where
+        T: tonic::client::GrpcService<tonic::body::BoxBody>,
+        T::Error: Into<StdError>,
+        T::ResponseBody: Body<Data = Bytes> + Send + 'static,
+        <T::ResponseBody as Body>::Error: Into<StdError> + Send,
+    {
+        pub fn new(inner: T) -> Self {
+            let inner = tonic::client::Grpc::new(inner);
+            Self { inner }
+        }
+        pub fn with_origin(inner: T, origin: Uri) -> Self {
+            let inner = tonic::client::Grpc::with_origin(inner, origin);
+            Self { inner }
+        }
+        pub fn with_interceptor<F>(
+            inner: T,
+            interceptor: F,
+        ) -> TextGenerationServiceClient<InterceptedService<T, F>>
+        where
+            F: tonic::service::Interceptor,
+            T::ResponseBody: Default,
+            T: tonic::codegen::Service<
+                http::Request<tonic::body::BoxBody>,
+                Response = http::Response<
+                    <T as tonic::client::GrpcService<tonic::body::BoxBody>>::ResponseBody,
+                >,
+            >,
+            <T as tonic::codegen::Service<http::Request<tonic::body::BoxBody>>>::Error:
+                Into<StdError> + Send + Sync,
+        {
+            TextGenerationServiceClient::new(InterceptedService::new(inner, interceptor))
+        }
+        /// Compress requests with the given encoding.
+        ///
+        /// This requires the server to support it otherwise it might respond with an
+        /// error.
+        #[must_use]
+        pub fn send_compressed(mut self, encoding: CompressionEncoding) -> Self {
+            self.inner = self.inner.send_compressed(encoding);
+            self
+        }
+        /// Enable decompressing responses.
+        #[must_use]
+        pub fn accept_compressed(mut self, encoding: CompressionEncoding) -> Self {
+            self.inner = self.inner.accept_compressed(encoding);
+            self
+        }
+        /// Limits the maximum size of a decoded message.
+        ///
+        /// Default: `4MB`
+        #[must_use]
+        pub fn max_decoding_message_size(mut self, limit: usize) -> Self {
+            self.inner = self.inner.max_decoding_message_size(limit);
+            self
+        }
+        /// Limits the maximum size of an encoded message.
+        ///
+        /// Default: `usize::MAX`
+        #[must_use]
+        pub fn max_encoding_message_size(mut self, limit: usize) -> Self {
+            self.inner = self.inner.max_encoding_message_size(limit);
+            self
+        }
+        /// / Model Info
+        pub async fn info(
+            &mut self,
+            request: impl tonic::IntoRequest<super::InfoRequest>,
+        ) -> std::result::Result<tonic::Response<super::InfoResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v2.TextGenerationService/Info");
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(GrpcMethod::new("generate.v2.TextGenerationService", "Info"));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Service discovery
+        pub async fn service_discovery(
+            &mut self,
+            request: impl tonic::IntoRequest<super::ServiceDiscoveryRequest>,
+        ) -> std::result::Result<tonic::Response<super::ServiceDiscoveryResponse>, tonic::Status>
+        {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/generate.v2.TextGenerationService/ServiceDiscovery",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "ServiceDiscovery",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Empties batch cache
+        pub async fn clear_cache(
+            &mut self,
+            request: impl tonic::IntoRequest<super::ClearCacheRequest>,
+        ) -> std::result::Result<tonic::Response<super::ClearCacheResponse>, tonic::Status>
+        {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/generate.v2.TextGenerationService/ClearCache",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "ClearCache",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Remove requests from a cached batch
+        pub async fn filter_batch(
+            &mut self,
+            request: impl tonic::IntoRequest<super::FilterBatchRequest>,
+        ) -> std::result::Result<tonic::Response<super::FilterBatchResponse>, tonic::Status>
+        {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/generate.v2.TextGenerationService/FilterBatch",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "FilterBatch",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Warmup the model and compute max cache size
+        pub async fn warmup(
+            &mut self,
+            request: impl tonic::IntoRequest<super::WarmupRequest>,
+        ) -> std::result::Result<tonic::Response<super::WarmupResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v2.TextGenerationService/Warmup");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "Warmup",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Prefill batch and decode first token
+        pub async fn prefill(
+            &mut self,
+            request: impl tonic::IntoRequest<super::PrefillRequest>,
+        ) -> std::result::Result<tonic::Response<super::PrefillResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v2.TextGenerationService/Prefill");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "Prefill",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Decode token for a list of prefilled batches
+        pub async fn decode(
+            &mut self,
+            request: impl tonic::IntoRequest<super::DecodeRequest>,
+        ) -> std::result::Result<tonic::Response<super::DecodeResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v2.TextGenerationService/Decode");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "Decode",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Health check
+        pub async fn health(
+            &mut self,
+            request: impl tonic::IntoRequest<super::HealthRequest>,
+        ) -> std::result::Result<tonic::Response<super::HealthResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v2.TextGenerationService/Health");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v2.TextGenerationService",
+                "Health",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+    }
+}

backends/client/src/v2/pb/mod.rs

@@ -0,0 +1,6 @@
+// This file is @generated by prost-build.
+pub mod generate {
+    pub mod v2 {
+        include!("generate.v2.rs");
+    }
+}

backends/client/src/v3/client.rs

@@ -107,20 +107,22 @@ impl Client {
     #[instrument(skip_all)]
     pub async fn warmup(
         &mut self,
-        max_input_length: u32,
+        max_input_tokens: Option<u32>,
         max_prefill_tokens: u32,
-        max_total_tokens: u32,
+        max_total_tokens: Option<u32>,
         max_batch_size: Option<usize>,
-    ) -> Result<Option<u32>> {
+    ) -> Result<(Option<u32>, u32, u32)> {
         let mut n_tokens = 0;
         let mut requests = Vec::new();
         // Create requests
         while n_tokens < max_prefill_tokens {
-            let truncate = min(max_input_length, max_prefill_tokens - n_tokens);
+            let mut truncate = max_prefill_tokens - n_tokens;
+            if let Some(max_input_tokens) = max_input_tokens {
+                truncate = min(max_input_tokens, truncate);
+            }
 
             let mut input_chunks = Vec::new();
-            input_chunks
-                .push(Chunk::Text("_test ".to_string().repeat(max_input_length as usize)).into());
+            input_chunks.push(Chunk::Text("_test ".to_string().repeat(truncate as usize)).into());
             if n_tokens == 0 {
                 input_chunks.push(
                     Chunk::Image(Image {
@@ -136,7 +138,7 @@ impl Client {
             // been updated to support chunks.
 
             let mut inputs = String::new();
-            inputs.push_str(&"_test ".to_string().repeat(max_input_length as usize));
+            inputs.push_str(&"_test ".to_string().repeat(truncate as usize));
             if n_tokens == 0 {
                 // 1 request is enough to test vision heads.
                 // Sending images on other queries messes up easily with truncation.
@@ -145,6 +147,12 @@ impl Client {
                 ));
             }
 
+            let max_new_tokens = if let Some(max_total_tokens) = max_total_tokens {
+                max_total_tokens - truncate
+            } else {
+                1
+            };
+
             requests.push(Request {
                 id: 0,
                 inputs,
@@ -175,7 +183,7 @@ impl Client {
                     grammar_type: GrammarType::None as i32,
                 }),
                 stopping_parameters: Some(StoppingCriteriaParameters {
-                    max_new_tokens: max_total_tokens - truncate,
+                    max_new_tokens,
                     stop_sequences: vec![],
                     ignore_eos_token: true,
                 }),
@@ -183,7 +191,7 @@ impl Client {
                 top_n_tokens: 20,
                 adapter_id: None,
             });
-            n_tokens += max_input_length;
+            n_tokens += truncate;
 
             // Check max_batch_size
             if Some(requests.len()) == max_batch_size {
@@ -195,19 +203,23 @@ impl Client {
             id: 0,
             size: requests.len() as u32,
             requests,
-            max_tokens: max_input_length,
+            max_tokens: max_input_tokens.unwrap_or(0),
             max_blocks: 0,
         };
 
         let request = tonic::Request::new(WarmupRequest {
             batch: Some(batch),
-            max_input_length,
+            max_input_tokens,
             max_prefill_tokens,
             max_total_tokens,
         })
         .inject_context();
         let response = self.stub.warmup(request).await?.into_inner();
-        Ok(response.max_supported_total_tokens)
+        Ok((
+            response.max_supported_total_tokens,
+            response.max_input_tokens,
+            response.max_total_tokens,
+        ))
     }
 
     /// Generate one token for each request in the given batch

backends/client/src/v3/pb/generate.v3.rs

@@ -0,0 +1,699 @@
+// This file is @generated by prost-build.
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct HealthRequest {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct HealthResponse {}
+/// / Empty request
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct InfoRequest {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct InfoResponse {
+    #[prost(bool, tag = "1")]
+    pub requires_padding: bool,
+    #[prost(string, tag = "2")]
+    pub dtype: ::prost::alloc::string::String,
+    #[prost(string, tag = "3")]
+    pub device_type: ::prost::alloc::string::String,
+    #[prost(uint32, optional, tag = "4")]
+    pub window_size: ::core::option::Option<u32>,
+    #[prost(uint32, tag = "5")]
+    pub speculate: u32,
+    #[prost(bool, tag = "6")]
+    pub support_chunking: bool,
+    #[prost(bool, tag = "7")]
+    pub use_prefix_caching: bool,
+    #[prost(string, tag = "8")]
+    pub attention_impl: ::prost::alloc::string::String,
+    #[prost(uint32, tag = "9")]
+    pub block_size: u32,
+}
+/// / Empty request
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ServiceDiscoveryRequest {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ServiceDiscoveryResponse {
+    /// / Other shards urls
+    #[prost(string, repeated, tag = "1")]
+    pub urls: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ClearCacheRequest {
+    /// / Optional batch id
+    #[prost(uint64, optional, tag = "1")]
+    pub id: ::core::option::Option<u64>,
+}
+/// / Empty response
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct ClearCacheResponse {}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Image {
+    /// / Binary image data.
+    #[prost(bytes = "vec", tag = "1")]
+    pub data: ::prost::alloc::vec::Vec<u8>,
+    /// / Image MIME type.
+    #[prost(string, tag = "2")]
+    pub mimetype: ::prost::alloc::string::String,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct InputChunk {
+    #[prost(oneof = "input_chunk::Chunk", tags = "1, 2")]
+    pub chunk: ::core::option::Option<input_chunk::Chunk>,
+}
+/// Nested message and enum types in `InputChunk`.
+pub mod input_chunk {
+    #[allow(clippy::derive_partial_eq_without_eq)]
+    #[derive(Clone, PartialEq, ::prost::Oneof)]
+    pub enum Chunk {
+        /// / Plain text data
+        #[prost(string, tag = "1")]
+        Text(::prost::alloc::string::String),
+        /// / Image data
+        #[prost(message, tag = "2")]
+        Image(super::Image),
+    }
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Input {
+    #[prost(message, repeated, tag = "1")]
+    pub chunks: ::prost::alloc::vec::Vec<InputChunk>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct NextTokenChooserParameters {
+    /// / exponential scaling output probability distribution
+    #[prost(float, tag = "1")]
+    pub temperature: f32,
+    /// / restricting to the k highest probability elements
+    #[prost(uint32, tag = "2")]
+    pub top_k: u32,
+    /// / restricting to top tokens summing to prob_cut_off <= prob_cut_off
+    #[prost(float, tag = "3")]
+    pub top_p: f32,
+    /// / restricting to top tokens summing to prob_cut_off <= prob_cut_off
+    #[prost(float, tag = "4")]
+    pub typical_p: f32,
+    /// / apply sampling on the logits
+    #[prost(bool, tag = "5")]
+    pub do_sample: bool,
+    /// / random seed for sampling
+    #[prost(uint64, tag = "6")]
+    pub seed: u64,
+    /// / repetition penalty
+    #[prost(float, tag = "7")]
+    pub repetition_penalty: f32,
+    /// / frequency penalty
+    #[prost(float, tag = "9")]
+    pub frequency_penalty: f32,
+    /// / token watermarking using "A Watermark for Large Language Models"
+    #[prost(bool, tag = "8")]
+    pub watermark: bool,
+    /// / grammar (applied if not empty)
+    #[prost(string, tag = "10")]
+    pub grammar: ::prost::alloc::string::String,
+    /// / grammar type
+    #[prost(enumeration = "GrammarType", tag = "11")]
+    pub grammar_type: i32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct StoppingCriteriaParameters {
+    /// / Maximum number of generated tokens
+    #[prost(uint32, tag = "1")]
+    pub max_new_tokens: u32,
+    /// / Optional stopping sequences
+    #[prost(string, repeated, tag = "2")]
+    pub stop_sequences: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+    /// / Ignore end of sequence token
+    /// / used for benchmarking
+    #[prost(bool, tag = "3")]
+    pub ignore_eos_token: bool,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Request {
+    /// / Request ID
+    #[prost(uint64, tag = "1")]
+    pub id: u64,
+    /// / The generation context as chunks
+    #[prost(message, optional, tag = "8")]
+    pub input_chunks: ::core::option::Option<Input>,
+    /// / The generation context, stringified input_chunks
+    #[prost(string, tag = "2")]
+    pub inputs: ::prost::alloc::string::String,
+    /// / Context truncation
+    #[prost(uint32, tag = "3")]
+    pub truncate: u32,
+    /// / Next Token Chooser Parameters
+    #[prost(message, optional, tag = "4")]
+    pub parameters: ::core::option::Option<NextTokenChooserParameters>,
+    /// / Stopping Criteria Parameters
+    #[prost(message, optional, tag = "5")]
+    pub stopping_parameters: ::core::option::Option<StoppingCriteriaParameters>,
+    /// / Return prefill logprobs
+    #[prost(bool, tag = "6")]
+    pub prefill_logprobs: bool,
+    /// / Return most likely n tokens
+    #[prost(uint32, tag = "7")]
+    pub top_n_tokens: u32,
+    /// / Paged attention blocks
+    #[prost(uint32, repeated, tag = "9")]
+    pub blocks: ::prost::alloc::vec::Vec<u32>,
+    /// / Paged attention slots
+    #[prost(uint32, repeated, tag = "10")]
+    pub slots: ::prost::alloc::vec::Vec<u32>,
+    /// / LORA adapter index
+    #[prost(string, optional, tag = "11")]
+    pub adapter_id: ::core::option::Option<::prost::alloc::string::String>,
+    /// / Tokens that can be retrieved from the KV cache.
+    /// / This value is set for the first prefill and never reset
+    #[prost(uint32, tag = "12")]
+    pub cache_len: u32,
+    /// / Context truncation
+    #[prost(bool, tag = "13")]
+    pub add_special_tokens: bool,
+    /// / Chunk of tokens that must be computed for the first prefill
+    /// / This value is set for the first prefill and never reset
+    #[prost(uint32, optional, tag = "14")]
+    pub chunk_len: ::core::option::Option<u32>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Batch {
+    /// / Batch ID
+    #[prost(uint64, tag = "1")]
+    pub id: u64,
+    /// / Individual requests
+    #[prost(message, repeated, tag = "2")]
+    pub requests: ::prost::alloc::vec::Vec<Request>,
+    /// / Batch size (==len(requests))
+    #[prost(uint32, tag = "3")]
+    pub size: u32,
+    /// / Maximum number of tokens this batch will grow to
+    #[prost(uint32, tag = "4")]
+    pub max_tokens: u32,
+    /// / Maximum number of Paged Attention blocks
+    #[prost(uint32, tag = "5")]
+    pub max_blocks: u32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct CachedBatch {
+    /// / Batch ID
+    #[prost(uint64, tag = "1")]
+    pub id: u64,
+    /// / Individual requests ids
+    #[prost(uint64, repeated, tag = "2")]
+    pub request_ids: ::prost::alloc::vec::Vec<u64>,
+    /// / Batch size (==len(requests))
+    #[prost(uint32, tag = "3")]
+    pub size: u32,
+    /// / Maximum number of tokens this batch will grow to
+    #[prost(uint32, tag = "4")]
+    pub max_tokens: u32,
+    /// / Number of tokens in the next forward
+    #[prost(uint32, tag = "5")]
+    pub current_tokens: u32,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct GeneratedText {
+    /// / Output
+    #[prost(string, tag = "1")]
+    pub text: ::prost::alloc::string::String,
+    /// / Number of generated tokens
+    #[prost(uint32, tag = "2")]
+    pub generated_tokens: u32,
+    /// / Finish reason
+    #[prost(enumeration = "FinishReason", tag = "3")]
+    pub finish_reason: i32,
+    /// / Seed
+    #[prost(uint64, optional, tag = "4")]
+    pub seed: ::core::option::Option<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Tokens {
+    /// / Token IDs
+    #[prost(uint32, repeated, tag = "1")]
+    pub ids: ::prost::alloc::vec::Vec<u32>,
+    /// / Logprobs
+    #[prost(float, repeated, tag = "2")]
+    pub logprobs: ::prost::alloc::vec::Vec<f32>,
+    /// / tokens
+    #[prost(string, repeated, tag = "3")]
+    pub texts: ::prost::alloc::vec::Vec<::prost::alloc::string::String>,
+    /// / special
+    #[prost(bool, repeated, tag = "4")]
+    pub is_special: ::prost::alloc::vec::Vec<bool>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct Generation {
+    /// / Request ID
+    #[prost(uint64, tag = "1")]
+    pub request_id: u64,
+    /// / Prefill tokens (optional)
+    #[prost(message, optional, tag = "2")]
+    pub prefill_tokens: ::core::option::Option<Tokens>,
+    #[prost(message, optional, tag = "3")]
+    pub tokens: ::core::option::Option<Tokens>,
+    /// / Complete generated text
+    #[prost(message, optional, tag = "4")]
+    pub generated_text: ::core::option::Option<GeneratedText>,
+    /// / Top tokens
+    #[prost(message, repeated, tag = "5")]
+    pub top_tokens: ::prost::alloc::vec::Vec<Tokens>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct FilterBatchRequest {
+    /// / Batch ID
+    #[prost(uint64, tag = "1")]
+    pub batch_id: u64,
+    /// / Requests to keep
+    #[prost(uint64, repeated, tag = "2")]
+    pub request_ids: ::prost::alloc::vec::Vec<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct FilterBatchResponse {
+    /// / Filtered Batch (cached)
+    #[prost(message, optional, tag = "1")]
+    pub batch: ::core::option::Option<CachedBatch>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PrefillRequest {
+    /// / Batch
+    #[prost(message, optional, tag = "1")]
+    pub batch: ::core::option::Option<Batch>,
+    /// / Optional cached batch
+    #[prost(message, optional, tag = "2")]
+    pub cached_batch: ::core::option::Option<CachedBatch>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PrefillResponse {
+    /// / Generation
+    #[prost(message, repeated, tag = "1")]
+    pub generations: ::prost::alloc::vec::Vec<Generation>,
+    /// / Next batch (cached)
+    #[prost(message, optional, tag = "2")]
+    pub batch: ::core::option::Option<CachedBatch>,
+    /// / Forward elapsed time in nanoseconds
+    #[prost(uint64, tag = "3")]
+    pub forward_ns: u64,
+    /// / Decode elapsed time in nanoseconds
+    #[prost(uint64, tag = "4")]
+    pub decode_ns: u64,
+    /// / Total elapsed time in nanoseconds
+    #[prost(uint64, tag = "5")]
+    pub total_ns: u64,
+    /// / Concatenate elapsed time in nanoseconds
+    #[prost(uint64, optional, tag = "6")]
+    pub concat_ns: ::core::option::Option<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DecodeRequest {
+    /// / Cached batches
+    #[prost(message, repeated, tag = "1")]
+    pub batches: ::prost::alloc::vec::Vec<CachedBatch>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct DecodeResponse {
+    /// / Decodes
+    #[prost(message, repeated, tag = "1")]
+    pub generations: ::prost::alloc::vec::Vec<Generation>,
+    /// / Next batch (cached)
+    #[prost(message, optional, tag = "2")]
+    pub batch: ::core::option::Option<CachedBatch>,
+    /// / Forward elapsed time in nanoseconds
+    #[prost(uint64, tag = "3")]
+    pub forward_ns: u64,
+    /// / Decode elapsed time in nanoseconds
+    #[prost(uint64, tag = "4")]
+    pub decode_ns: u64,
+    /// / Total elapsed time in nanoseconds
+    #[prost(uint64, tag = "5")]
+    pub total_ns: u64,
+    /// / Concatenate elapsed time in nanoseconds
+    #[prost(uint64, optional, tag = "6")]
+    pub concat_ns: ::core::option::Option<u64>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct WarmupRequest {
+    /// / Batch to warmup on
+    #[prost(message, optional, tag = "1")]
+    pub batch: ::core::option::Option<Batch>,
+    #[prost(uint32, optional, tag = "2")]
+    pub max_input_tokens: ::core::option::Option<u32>,
+    #[prost(uint32, tag = "3")]
+    pub max_prefill_tokens: u32,
+    #[prost(uint32, optional, tag = "4")]
+    pub max_total_tokens: ::core::option::Option<u32>,
+}
+#[allow(clippy::derive_partial_eq_without_eq)]
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct WarmupResponse {
+    /// / Maximum number of tokens supported by the model
+    #[prost(uint32, optional, tag = "1")]
+    pub max_supported_total_tokens: ::core::option::Option<u32>,
+    /// / Maximum input tokens by clients should be equal to request value if it's set
+    /// / Otherwise warmup automatically allocates a value here
+    #[prost(uint32, tag = "2")]
+    pub max_input_tokens: u32,
+    /// / Maximum total tokens by clients should be equal to request value if it's set
+    /// / Otherwise warmup automatically allocates a value here
+    #[prost(uint32, tag = "3")]
+    pub max_total_tokens: u32,
+}
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, ::prost::Enumeration)]
+#[repr(i32)]
+pub enum GrammarType {
+    None = 0,
+    Json = 1,
+    Regex = 2,
+}
+impl GrammarType {
+    /// String value of the enum field names used in the ProtoBuf definition.
+    ///
+    /// The values are not transformed in any way and thus are considered stable
+    /// (if the ProtoBuf definition does not change) and safe for programmatic use.
+    pub fn as_str_name(&self) -> &'static str {
+        match self {
+            GrammarType::None => "GRAMMAR_TYPE_NONE",
+            GrammarType::Json => "GRAMMAR_TYPE_JSON",
+            GrammarType::Regex => "GRAMMAR_TYPE_REGEX",
+        }
+    }
+    /// Creates an enum from field names used in the ProtoBuf definition.
+    pub fn from_str_name(value: &str) -> ::core::option::Option<Self> {
+        match value {
+            "GRAMMAR_TYPE_NONE" => Some(Self::None),
+            "GRAMMAR_TYPE_JSON" => Some(Self::Json),
+            "GRAMMAR_TYPE_REGEX" => Some(Self::Regex),
+            _ => None,
+        }
+    }
+}
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord, ::prost::Enumeration)]
+#[repr(i32)]
+pub enum FinishReason {
+    Length = 0,
+    EosToken = 1,
+    StopSequence = 2,
+}
+impl FinishReason {
+    /// String value of the enum field names used in the ProtoBuf definition.
+    ///
+    /// The values are not transformed in any way and thus are considered stable
+    /// (if the ProtoBuf definition does not change) and safe for programmatic use.
+    pub fn as_str_name(&self) -> &'static str {
+        match self {
+            FinishReason::Length => "FINISH_REASON_LENGTH",
+            FinishReason::EosToken => "FINISH_REASON_EOS_TOKEN",
+            FinishReason::StopSequence => "FINISH_REASON_STOP_SEQUENCE",
+        }
+    }
+    /// Creates an enum from field names used in the ProtoBuf definition.
+    pub fn from_str_name(value: &str) -> ::core::option::Option<Self> {
+        match value {
+            "FINISH_REASON_LENGTH" => Some(Self::Length),
+            "FINISH_REASON_EOS_TOKEN" => Some(Self::EosToken),
+            "FINISH_REASON_STOP_SEQUENCE" => Some(Self::StopSequence),
+            _ => None,
+        }
+    }
+}
+/// Generated client implementations.
+pub mod text_generation_service_client {
+    #![allow(unused_variables, dead_code, missing_docs, clippy::let_unit_value)]
+    use tonic::codegen::http::Uri;
+    use tonic::codegen::*;
+    #[derive(Debug, Clone)]
+    pub struct TextGenerationServiceClient<T> {
+        inner: tonic::client::Grpc<T>,
+    }
+    impl TextGenerationServiceClient<tonic::transport::Channel> {
+        /// Attempt to create a new client by connecting to a given endpoint.
+        pub async fn connect<D>(dst: D) -> Result<Self, tonic::transport::Error>
+        where
+            D: TryInto<tonic::transport::Endpoint>,
+            D::Error: Into<StdError>,
+        {
+            let conn = tonic::transport::Endpoint::new(dst)?.connect().await?;
+            Ok(Self::new(conn))
+        }
+    }
+    impl<T> TextGenerationServiceClient<T>
+    where
+        T: tonic::client::GrpcService<tonic::body::BoxBody>,
+        T::Error: Into<StdError>,
+        T::ResponseBody: Body<Data = Bytes> + Send + 'static,
+        <T::ResponseBody as Body>::Error: Into<StdError> + Send,
+    {
+        pub fn new(inner: T) -> Self {
+            let inner = tonic::client::Grpc::new(inner);
+            Self { inner }
+        }
+        pub fn with_origin(inner: T, origin: Uri) -> Self {
+            let inner = tonic::client::Grpc::with_origin(inner, origin);
+            Self { inner }
+        }
+        pub fn with_interceptor<F>(
+            inner: T,
+            interceptor: F,
+        ) -> TextGenerationServiceClient<InterceptedService<T, F>>
+        where
+            F: tonic::service::Interceptor,
+            T::ResponseBody: Default,
+            T: tonic::codegen::Service<
+                http::Request<tonic::body::BoxBody>,
+                Response = http::Response<
+                    <T as tonic::client::GrpcService<tonic::body::BoxBody>>::ResponseBody,
+                >,
+            >,
+            <T as tonic::codegen::Service<http::Request<tonic::body::BoxBody>>>::Error:
+                Into<StdError> + Send + Sync,
+        {
+            TextGenerationServiceClient::new(InterceptedService::new(inner, interceptor))
+        }
+        /// Compress requests with the given encoding.
+        ///
+        /// This requires the server to support it otherwise it might respond with an
+        /// error.
+        #[must_use]
+        pub fn send_compressed(mut self, encoding: CompressionEncoding) -> Self {
+            self.inner = self.inner.send_compressed(encoding);
+            self
+        }
+        /// Enable decompressing responses.
+        #[must_use]
+        pub fn accept_compressed(mut self, encoding: CompressionEncoding) -> Self {
+            self.inner = self.inner.accept_compressed(encoding);
+            self
+        }
+        /// Limits the maximum size of a decoded message.
+        ///
+        /// Default: `4MB`
+        #[must_use]
+        pub fn max_decoding_message_size(mut self, limit: usize) -> Self {
+            self.inner = self.inner.max_decoding_message_size(limit);
+            self
+        }
+        /// Limits the maximum size of an encoded message.
+        ///
+        /// Default: `usize::MAX`
+        #[must_use]
+        pub fn max_encoding_message_size(mut self, limit: usize) -> Self {
+            self.inner = self.inner.max_encoding_message_size(limit);
+            self
+        }
+        /// / Model Info
+        pub async fn info(
+            &mut self,
+            request: impl tonic::IntoRequest<super::InfoRequest>,
+        ) -> std::result::Result<tonic::Response<super::InfoResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v3.TextGenerationService/Info");
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(GrpcMethod::new("generate.v3.TextGenerationService", "Info"));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Service discovery
+        pub async fn service_discovery(
+            &mut self,
+            request: impl tonic::IntoRequest<super::ServiceDiscoveryRequest>,
+        ) -> std::result::Result<tonic::Response<super::ServiceDiscoveryResponse>, tonic::Status>
+        {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/generate.v3.TextGenerationService/ServiceDiscovery",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "ServiceDiscovery",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Empties batch cache
+        pub async fn clear_cache(
+            &mut self,
+            request: impl tonic::IntoRequest<super::ClearCacheRequest>,
+        ) -> std::result::Result<tonic::Response<super::ClearCacheResponse>, tonic::Status>
+        {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/generate.v3.TextGenerationService/ClearCache",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "ClearCache",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Remove requests from a cached batch
+        pub async fn filter_batch(
+            &mut self,
+            request: impl tonic::IntoRequest<super::FilterBatchRequest>,
+        ) -> std::result::Result<tonic::Response<super::FilterBatchResponse>, tonic::Status>
+        {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/generate.v3.TextGenerationService/FilterBatch",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "FilterBatch",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Warmup the model and compute max cache size
+        pub async fn warmup(
+            &mut self,
+            request: impl tonic::IntoRequest<super::WarmupRequest>,
+        ) -> std::result::Result<tonic::Response<super::WarmupResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v3.TextGenerationService/Warmup");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "Warmup",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Prefill batch and decode first token
+        pub async fn prefill(
+            &mut self,
+            request: impl tonic::IntoRequest<super::PrefillRequest>,
+        ) -> std::result::Result<tonic::Response<super::PrefillResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v3.TextGenerationService/Prefill");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "Prefill",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Decode token for a list of prefilled batches
+        pub async fn decode(
+            &mut self,
+            request: impl tonic::IntoRequest<super::DecodeRequest>,
+        ) -> std::result::Result<tonic::Response<super::DecodeResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v3.TextGenerationService/Decode");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "Decode",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+        /// / Health check
+        pub async fn health(
+            &mut self,
+            request: impl tonic::IntoRequest<super::HealthRequest>,
+        ) -> std::result::Result<tonic::Response<super::HealthResponse>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path =
+                http::uri::PathAndQuery::from_static("/generate.v3.TextGenerationService/Health");
+            let mut req = request.into_request();
+            req.extensions_mut().insert(GrpcMethod::new(
+                "generate.v3.TextGenerationService",
+                "Health",
+            ));
+            self.inner.unary(req, path, codec).await
+        }
+    }
+}

backends/client/src/v3/pb/mod.rs

@@ -0,0 +1,6 @@
+// This file is @generated by prost-build.
+pub mod generate {
+    pub mod v3 {
+        include!("generate.v3.rs");
+    }
+}

backends/client/src/v3/sharded_client.rs

@@ -101,11 +101,11 @@ impl ShardedClient {
     #[instrument(skip(self))]
     pub async fn warmup(
         &mut self,
-        max_input_length: u32,
+        max_input_length: Option<u32>,
         max_prefill_tokens: u32,
-        max_total_tokens: u32,
+        max_total_tokens: Option<u32>,
         max_batch_size: Option<usize>,
-    ) -> Result<Option<u32>> {
+    ) -> Result<(Option<u32>, u32, u32)> {
         let futures: Vec<_> = self
             .clients
             .iter_mut()
@@ -122,8 +122,10 @@ impl ShardedClient {
         let results = join_all(futures)
             .await
             .into_iter()
-            .collect::<Result<Vec<Option<u32>>>>()?;
-        Ok(results.into_iter().flatten().min())
+            .collect::<Result<Vec<(Option<u32>, u32, u32)>>>()?;
+        let first = results.first().expect("Expect at least 1 warmup result");
+        assert!(results.iter().all(|&item| item == *first));
+        Ok(*first)
     }
 
     /// Generate one token for each request in the given batch

backends/v3/src/client/grpc_client.rs

@@ -108,20 +108,22 @@ impl Client {
     #[instrument(skip_all)]
     pub async fn warmup(
         &mut self,
-        max_input_length: u32,
+        max_input_tokens: Option<u32>,
         max_prefill_tokens: u32,
-        max_total_tokens: u32,
+        max_total_tokens: Option<u32>,
         max_batch_size: Option<usize>,
-    ) -> Result<Option<u32>> {
+    ) -> Result<(Option<u32>, u32, u32)> {
         let mut n_tokens = 0;
         let mut requests = Vec::new();
         // Create requests
         while n_tokens < max_prefill_tokens {
-            let truncate = min(max_input_length, max_prefill_tokens - n_tokens);
+            let mut truncate = max_prefill_tokens - n_tokens;
+            if let Some(max_input_tokens) = max_input_tokens {
+                truncate = min(max_input_tokens, truncate);
+            }
 
             let mut input_chunks = Vec::new();
-            input_chunks
-                .push(Chunk::Text("_test ".to_string().repeat(max_input_length as usize)).into());
+            input_chunks.push(Chunk::Text("_test ".to_string().repeat(truncate as usize)).into());
             if n_tokens == 0 {
                 input_chunks.push(
                     Chunk::Image(Image {
@@ -137,7 +139,7 @@ impl Client {
             // been updated to support chunks.
 
             let mut inputs = String::new();
-            inputs.push_str(&"_test ".to_string().repeat(max_input_length as usize));
+            inputs.push_str(&"_test ".to_string().repeat(truncate as usize));
             if n_tokens == 0 {
                 // 1 request is enough to test vision heads.
                 // Sending images on other queries messes up easily with truncation.
@@ -146,6 +148,12 @@ impl Client {
                 ));
             }
 
+            let max_new_tokens = if let Some(max_total_tokens) = max_total_tokens {
+                max_total_tokens - truncate
+            } else {
+                1
+            };
+
             requests.push(Request {
                 id: 0,
                 inputs,
@@ -175,7 +183,7 @@ impl Client {
                     grammar_type: GrammarType::None as i32,
                 }),
                 stopping_parameters: Some(StoppingCriteriaParameters {
-                    max_new_tokens: max_total_tokens - truncate,
+                    max_new_tokens,
                     stop_sequences: vec![],
                     ignore_eos_token: true,
                 }),
@@ -183,7 +191,7 @@ impl Client {
                 top_n_tokens: 20,
                 adapter_id: None,
             });
-            n_tokens += max_input_length;
+            n_tokens += truncate;
 
             // Check max_batch_size
             if Some(requests.len()) == max_batch_size {
@@ -195,19 +203,23 @@ impl Client {
             id: 0,
             size: requests.len() as u32,
             requests,
-            max_tokens: max_input_length,
+            max_tokens: max_input_tokens.unwrap_or(0),
             max_blocks: 0,
         };
 
         let request = tonic::Request::new(WarmupRequest {
             batch: Some(batch),
-            max_input_length,
+            max_input_tokens,
             max_prefill_tokens,
             max_total_tokens,
         })
         .inject_context();
         let response = self.stub.warmup(request).await?.into_inner();
-        Ok(response.max_supported_total_tokens)
+        Ok((
+            response.max_supported_total_tokens,
+            response.max_input_tokens,
+            response.max_total_tokens,
+        ))
     }
 
     /// Generate one token for each request in the given batch

backends/v3/src/client/sharded_client.rs

@@ -102,11 +102,11 @@ impl ShardedClient {
     #[instrument(skip(self))]
     pub async fn warmup(
         &mut self,
-        max_input_length: u32,
+        max_input_length: Option<u32>,
         max_prefill_tokens: u32,
-        max_total_tokens: u32,
+        max_total_tokens: Option<u32>,
         max_batch_size: Option<usize>,
-    ) -> Result<Option<u32>> {
+    ) -> Result<(Option<u32>, u32, u32)> {
         let futures: Vec<_> = self
             .clients
             .iter_mut()
@@ -123,8 +123,11 @@ impl ShardedClient {
         let results = join_all(futures)
             .await
             .into_iter()
-            .collect::<Result<Vec<Option<u32>>>>()?;
-        Ok(results.into_iter().flatten().min())
+            .collect::<Result<Vec<(Option<u32>, u32, u32)>>>()?;
+
+        let first = results.first().expect("Expect at least 1 warmup result");
+        assert!(results.iter().all(|&item| item == *first));
+        Ok(*first)
     }
 
     /// Generate one token for each request in the given batch

backends/v3/src/lib.rs

@@ -37,12 +37,17 @@ pub struct BackendInfo {
     pub attention_impl: String,
     #[schema(example = "1")]
     pub block_size: u32,
+
+    #[schema(example = "30000")]
+    pub max_input_tokens: usize,
+    #[schema(example = "32000")]
+    pub max_total_tokens: usize,
 }
 
 #[allow(clippy::too_many_arguments)]
 pub async fn connect_backend(
-    max_input_tokens: usize,
-    max_total_tokens: usize,
+    max_input_tokens: Option<usize>,
+    max_total_tokens: Option<usize>,
     master_shard_uds_path: String,
     waiting_served_ratio: f32,
     max_batch_prefill_tokens: u32,
@@ -51,14 +56,32 @@ pub async fn connect_backend(
     max_batch_size: Option<usize>,
 ) -> Result<(BackendV3, BackendInfo), V3Error> {
     // Helper function
-    let check_max_batch_total_tokens = |max_supported_batch_total_tokens: Option<u32>| {
+    let check_max_batch_total_tokens = |(
+        max_supported_batch_total_tokens,
+        shard_max_input_tokens,
+        shard_max_total_tokens,
+    ): (Option<u32>, u32, u32)|
+     -> Result<(u32, usize, usize), V3Error> {
+        if let Some(max_input_tokens) = max_input_tokens {
+            assert_eq!(max_input_tokens as u32, shard_max_input_tokens);
+        }
+        if let Some(max_total_tokens) = max_total_tokens {
+            assert_eq!(max_total_tokens as u32, shard_max_total_tokens);
+        }
         match max_supported_batch_total_tokens {
             // Older models do not support automatic max-batch-total-tokens
             None => {
-                let max_batch_total_tokens = max_batch_total_tokens
-                    .unwrap_or(16000.max((max_total_tokens as u32).max(max_batch_prefill_tokens)));
+                let max_batch_total_tokens = max_batch_total_tokens.unwrap_or(
+                    16000
+                        .max(shard_max_total_tokens)
+                        .max(max_batch_prefill_tokens),
+                );
                 tracing::warn!("Model does not support automatic max batch total tokens");
-                Ok(max_batch_total_tokens)
+                Ok((
+                    max_batch_total_tokens,
+                    shard_max_input_tokens as usize,
+                    shard_max_total_tokens as usize,
+                ))
             }
             // Flash attention models return their max supported total tokens
             Some(max_supported_batch_total_tokens) => {
@@ -72,11 +95,15 @@ pub async fn connect_backend(
                         "Inferred max batch total tokens: {max_supported_batch_total_tokens}"
                     );
                 }
-                if max_total_tokens as u32 > max_supported_batch_total_tokens {
-                    return Err(V3Error::NotEnoughMemory(max_total_tokens));
+                if shard_max_total_tokens > max_supported_batch_total_tokens {
+                    return Err(V3Error::NotEnoughMemory(shard_max_total_tokens as usize));
                 }
 
-                Ok(max_supported_batch_total_tokens)
+                Ok((
+                    max_supported_batch_total_tokens,
+                    shard_max_input_tokens as usize,
+                    shard_max_total_tokens as usize,
+                ))
             }
         }
     };
@@ -96,23 +123,25 @@ pub async fn connect_backend(
 
     // Warmup model
     tracing::info!("Warming up model");
-    let max_batch_total_tokens = check_max_batch_total_tokens(
-        sharded_client
+    let answer = sharded_client
         .warmup(
-                max_input_tokens as u32,
+            max_input_tokens.map(|p| p as u32),
             max_batch_prefill_tokens,
-                max_total_tokens as u32,
+            max_total_tokens.map(|p| p as u32),
             max_batch_size,
         )
         .await
-            .map_err(V3Error::Warmup)?,
-    )?;
+        .map_err(V3Error::Warmup)?;
+    let (max_batch_total_tokens, max_input_tokens, max_total_tokens) =
+        check_max_batch_total_tokens(answer)?;
     tracing::info!("Setting max batch total tokens to {max_batch_total_tokens}");
     metrics::gauge!("tgi_batch_max_total_tokens").set(max_batch_total_tokens);
 
     let backend_info = BackendInfo {
         waiting_served_ratio,
         max_batch_total_tokens,
+        max_input_tokens,
+        max_total_tokens,
         max_waiting_tokens,
         max_batch_size,
         model_device_type: shard_info.device_type.clone(),

backends/v3/src/main.rs

@@ -18,10 +18,10 @@ struct Args {
     max_stop_sequences: usize,
     #[clap(default_value = "5", long, env)]
     max_top_n_tokens: u32,
-    #[clap(default_value = "1024", long, env)]
-    max_input_tokens: usize,
-    #[clap(default_value = "2048", long, env)]
-    max_total_tokens: usize,
+    #[clap(long, env)]
+    max_input_tokens: Option<usize>,
+    #[clap(long, env)]
+    max_total_tokens: Option<usize>,
     #[clap(default_value = "1.2", long, env)]
     waiting_served_ratio: f32,
     #[clap(default_value = "4096", long, env)]
@@ -126,12 +126,6 @@ async fn main() -> Result<(), RouterError> {
     text_generation_router::logging::init_logging(otlp_endpoint, otlp_service_name, json_output);
 
     // Validate args
-    if max_input_tokens >= max_total_tokens {
-        return Err(RouterError::ArgumentValidation(
-            "`max_input_tokens` must be < `max_total_tokens`".to_string(),
-        ));
-    }
-
     if validation_workers == 0 {
         return Err(RouterError::ArgumentValidation(
             "`validation_workers` must be > 0".to_string(),
@@ -160,6 +154,28 @@ async fn main() -> Result<(), RouterError> {
     // Validate remaining args now that the backend is known
     let support_chunking = backend_info.support_chunking;
     let max_batch_total_tokens = backend_info.max_batch_total_tokens;
+
+    if max_input_tokens.is_none() {
+        tracing::info!(
+            "Maximum input tokens defaulted to {}",
+            backend_info.max_input_tokens
+        );
+    }
+    if max_total_tokens.is_none() {
+        tracing::info!(
+            "Maximum total tokens defaulted to {}",
+            backend_info.max_total_tokens
+        );
+    }
+
+    let max_input_tokens = backend_info.max_input_tokens;
+    let max_total_tokens = backend_info.max_total_tokens;
+    if max_input_tokens >= max_total_tokens {
+        return Err(RouterError::ArgumentValidation(
+            "`max_input_tokens` must be < `max_total_tokens`".to_string(),
+        ));
+    }
+
     if max_input_tokens as u32 > max_batch_prefill_tokens && !support_chunking {
         return Err(RouterError::ArgumentValidation(format!("`max_batch_prefill_tokens` must be >= `max_input_tokens`. Given: {max_batch_prefill_tokens} and {max_input_tokens}")));
     }

launcher/src/main.rs

@@ -137,10 +137,7 @@ fn resolve_attention(config: &Option<Config>, lora_adapters: &Option<String>) ->
 
 #[derive(Deserialize)]
 struct RawConfig {
-    max_position_embeddings: Option<usize>,
-    n_positions: Option<usize>,
     model_type: Option<String>,
-    max_seq_len: Option<usize>,
     quantization_config: Option<QuantizationConfig>,
     n_embd: Option<usize>,
     hidden_size: Option<usize>,
@@ -160,7 +157,6 @@ struct VisionConfig {}
 
 #[derive(Deserialize)]
 struct Config {
-    max_position_embeddings: Option<usize>,
     quantize: Option<Quantization>,
     head_dim: Option<usize>,
     model_type: Option<String>,
@@ -170,10 +166,6 @@ struct Config {
 
 impl From<RawConfig> for Config {
     fn from(other: RawConfig) -> Self {
-        let max_position_embeddings = other
-            .max_position_embeddings
-            .or(other.max_seq_len)
-            .or(other.n_positions);
         let quantize = other.quantization_config.and_then(|q| q.quant_method);
         let head_dim = other.head_dim.or_else(|| {
             match (other.hidden_size, other.n_embd, other.num_attention_heads) {
@@ -195,7 +187,6 @@ impl From<RawConfig> for Config {
         let vision_config = other.vision_config;
         let is_encoder_decoder = other.is_encoder_decoder.unwrap_or(false);
         Config {
-            max_position_embeddings,
             quantize,
             head_dim,
             model_type,
@@ -472,7 +463,7 @@ struct Args {
     /// for users. The larger this value, the longer prompt users can send which
     /// can impact the overall memory required to handle the load.
     /// Please note that some models have a finite range of sequence they can handle.
-    /// Default to min(max_position_embeddings - 1, 4095)
+    /// Default to min(max_allocatable, max_position_embeddings) - 1
     #[clap(long, env)]
     max_input_tokens: Option<usize>,
 
@@ -488,7 +479,7 @@ struct Args {
     /// `1511` max_new_tokens.
     /// The larger this value, the larger amount each request will be in your RAM
     /// and the less effective batching can be.
-    /// Default to min(max_position_embeddings, 4096)
+    /// Default to min(max_allocatable, max_position_embeddings)
     #[clap(long, env)]
     max_total_tokens: Option<usize>,
 
@@ -718,9 +709,9 @@ fn shard_manager(
     cuda_memory_fraction: f32,
     rope_scaling: Option<RopeScaling>,
     rope_factor: Option<f32>,
-    max_total_tokens: usize,
+    max_total_tokens: Option<usize>,
     max_batch_size: Option<usize>,
-    max_input_tokens: usize,
+    max_input_tokens: Option<usize>,
     lora_adapters: Option<String>,
     otlp_endpoint: Option<String>,
     otlp_service_name: String,
@@ -805,8 +796,10 @@ fn shard_manager(
     shard_args.push(otlp_service_name);
 
     // In case we use sliding window, we may ignore the sliding in flash for some backends depending on the parameter.
+    if let Some(max_input_tokens) = max_input_tokens {
         shard_args.push("--max-input-tokens".to_string());
         shard_args.push(max_input_tokens.to_string());
+    }
 
     // Copy current process env
     let mut envs: Vec<(OsString, OsString)> = env::vars_os().collect();
@@ -854,10 +847,12 @@ fn shard_manager(
         envs.push(("ROPE_FACTOR".into(), factor.to_string().into()));
     }
 
+    if let Some(max_total_tokens) = max_total_tokens {
         envs.push((
             "MAX_TOTAL_TOKENS".into(),
             max_total_tokens.to_string().into(),
         ));
+    }
     if let Some(max_batch_size) = max_batch_size {
         envs.push(("MAX_BATCH_SIZE".into(), max_batch_size.to_string().into()));
     }
@@ -1313,8 +1308,8 @@ fn spawn_shards(
     num_shard: usize,
     args: &Args,
     cuda_graphs: Vec<usize>,
-    max_total_tokens: usize,
-    max_input_tokens: usize,
+    max_total_tokens: Option<usize>,
+    max_input_tokens: Option<usize>,
     quantize: Option<Quantization>,
     max_log_level: LevelFilter,
     shutdown: Arc<AtomicBool>,
@@ -1432,8 +1427,8 @@ fn compute_type(num_shard: usize) -> Option<String> {
 fn spawn_webserver(
     num_shard: usize,
     args: Args,
-    max_input_tokens: usize,
-    max_total_tokens: usize,
+    max_input_tokens: Option<usize>,
+    max_total_tokens: Option<usize>,
     max_batch_prefill_tokens: u32,
     shutdown: Arc<AtomicBool>,
     shutdown_receiver: &mpsc::Receiver<()>,
@@ -1452,10 +1447,6 @@ fn spawn_webserver(
         args.max_stop_sequences.to_string(),
         "--max-top-n-tokens".to_string(),
         args.max_top_n_tokens.to_string(),
-        "--max-input-tokens".to_string(),
-        max_input_tokens.to_string(),
-        "--max-total-tokens".to_string(),
-        max_total_tokens.to_string(),
         "--max-batch-prefill-tokens".to_string(),
         max_batch_prefill_tokens.to_string(),
         "--waiting-served-ratio".to_string(),
@@ -1473,6 +1464,18 @@ fn spawn_webserver(
         "--tokenizer-name".to_string(),
         args.model_id,
     ];
+    if let Some(max_input_tokens) = max_input_tokens {
+        router_args.extend_from_slice(&[
+            "--max-input-tokens".to_string(),
+            max_input_tokens.to_string(),
+        ]);
+    }
+    if let Some(max_total_tokens) = max_total_tokens {
+        router_args.extend_from_slice(&[
+            "--max-total-tokens".to_string(),
+            max_total_tokens.to_string(),
+        ]);
+    }
 
     // Pass usage stats flags to router
     router_args.push("--usage-stats".to_string());
@@ -1664,28 +1667,6 @@ fn main() -> Result<(), LauncherError> {
     let config: Option<Config> = get_config(&args.model_id, &args.revision).ok();
     let quantize = config.as_ref().and_then(|c| c.quantize);
     // Quantization usually means you're even more RAM constrained.
-    let max_default = 4096;
-
-    let max_position_embeddings = if let Some(config) = &config {
-        if let Some(max_position_embeddings) = config.max_position_embeddings {
-            if max_position_embeddings > max_default {
-                let max = max_position_embeddings;
-                if args.max_input_tokens.is_none()
-                    && args.max_total_tokens.is_none()
-                    && args.max_batch_prefill_tokens.is_none()
-                {
-                    tracing::info!("Model supports up to {max} but tgi will now set its default to {max_default} instead. This is to save VRAM by refusing large prompts in order to allow more users on the same hardware. You can increase that size using `--max-batch-prefill-tokens={} --max-total-tokens={max} --max-input-tokens={}`.", max + 50, max - 1);
-                }
-                max_default
-            } else {
-                max_position_embeddings
-            }
-        } else {
-            max_default
-        }
-    } else {
-        max_default
-    };
     let (prefix_caching, attention) = resolve_attention(&config, &args.lora_adapters);
     tracing::info!("Using attention {attention} - Prefix caching {prefix_caching}");
     std::env::set_var("PREFIX_CACHING", prefix_caching);
@@ -1698,35 +1679,26 @@ fn main() -> Result<(), LauncherError> {
                     format!("Both `max_input_tokens` ({max_input_tokens}) and `max_input_length` ({max_input_length}) are set. Please define only `max_input_tokens` as `max_input_length is deprecated for naming consistency.",
                 )));
             }
-            (Some(max_input_tokens), None) | (None, Some(max_input_tokens)) => max_input_tokens,
-            (None, None) => {
-                let value = max_position_embeddings - 1;
-                tracing::info!("Default `max_input_tokens` to {value}");
-                value
-            }
-        }
-    };
-    let max_total_tokens = {
-        match args.max_total_tokens {
-            Some(max_total_tokens) => max_total_tokens,
-            None => {
-                let value = max_position_embeddings;
-                tracing::info!("Default `max_total_tokens` to {value}");
-                value
+            (Some(max_input_tokens), None) | (None, Some(max_input_tokens)) => {
+                Some(max_input_tokens)
             }
+            (None, None) => None,
         }
     };
+    let max_total_tokens = args.max_total_tokens;
     let max_batch_prefill_tokens = {
         match args.max_batch_prefill_tokens {
             Some(max_batch_prefill_tokens) => max_batch_prefill_tokens,
             None => {
-                let value: u32 = if let Some(max_batch_size) = args.max_batch_size {
-                    max_batch_size * max_input_tokens
-                } else {
-                    // Adding some edge in order to account for potential block_size alignement
-                    // issue.
-                    max_input_tokens + 50
-                } as u32;
+                // let value: u32 = if let Some(max_batch_size) = args.max_batch_size {
+                //     max_batch_size * max_input_tokens
+                // } else {
+                //     // Adding some edge in order to account for potential block_size alignement
+                //     // issue.
+                //     max_input_tokens + 50
+                // } as u32;
+                // TODO figure out hardware optimal value
+                let value = 4096;
                 tracing::info!("Default `max_batch_prefill_tokens` to {value}");
                 value
             }
@@ -1734,11 +1706,13 @@ fn main() -> Result<(), LauncherError> {
     };
 
     // Validate args
+    if let (Some(max_input_tokens), Some(max_total_tokens)) = (max_input_tokens, max_total_tokens) {
         if max_input_tokens >= max_total_tokens {
             return Err(LauncherError::ArgumentValidation(
-            "`max_input_tokens must be < `max_total_tokens`".to_string(),
+                    format!("`max_input_tokens`({max_input_tokens}) must be < `max_total_tokens`({max_total_tokens})"),
                 ));
         }
+    }
 
     if matches!(args.quantize, Some(Quantization::Bitsandbytes)) {
         tracing::warn!("Bitsandbytes is deprecated, use `eetq` instead, which provides better latencies overall and is drop-in in most cases.");
@@ -1792,6 +1766,7 @@ fn main() -> Result<(), LauncherError> {
     }
 
     if let Some(ref max_batch_total_tokens) = args.max_batch_total_tokens {
+        if let Some(max_total_tokens) = max_total_tokens {
             if max_total_tokens as u32 > *max_batch_total_tokens {
                 return Err(LauncherError::ArgumentValidation(format!(
                     "`max_total_tokens` must be <= `max_batch_total_tokens`. Given: {} and {}",
@@ -1799,6 +1774,7 @@ fn main() -> Result<(), LauncherError> {
                 )));
             }
         }
+    }
 
     if args.ngrok {
         if args.ngrok_authtoken.is_none() {

proto/v3/generate.proto

@@ -272,12 +272,18 @@ message DecodeResponse {
 message WarmupRequest {
   /// Batch to warmup on
   Batch batch = 1;
-  uint32 max_input_length = 2;
+  optional uint32 max_input_tokens = 2;
   uint32 max_prefill_tokens = 3;
-  uint32 max_total_tokens = 4;
+  optional uint32 max_total_tokens = 4;
 }
 
 message WarmupResponse {
   /// Maximum number of tokens supported by the model
   optional uint32 max_supported_total_tokens = 1;
+  /// Maximum input tokens by clients should be equal to request value if it's set
+  /// Otherwise warmup automatically allocates a value here
+  uint32 max_input_tokens = 2;
+  /// Maximum total tokens by clients should be equal to request value if it's set
+  /// Otherwise warmup automatically allocates a value here
+  uint32 max_total_tokens = 3;
 }

server/text_generation_server/models/flash_causal_lm.py

@@ -78,6 +78,10 @@ tracer = trace.get_tracer(__name__)
 SLIDING_WINDOW: Optional[int] = None
 
 
+def small_power_of_2(n: int):
+    return 1 << ((n - 1).bit_length() - 1)
+
+
 def set_sliding_window(sliding_window: int):
     global SLIDING_WINDOW
     SLIDING_WINDOW = sliding_window
@@ -1377,11 +1381,40 @@ class FlashCausalLM(Model):
                 self.cuda_graphs[bs]["speculative_logits"] = speculative_logits
         torch.cuda.synchronize()
 
-    def warmup(self, batch: FlashCausalLMBatch):
+    def warmup(
+        self,
+        batch: FlashCausalLMBatch,
+        max_input_tokens: Optional[int],
+        max_total_tokens: Optional[int],
+    ):
         # The warmup batch is the biggest batch we could ever receive
         self.kv_cache = []
         empty_cache()
 
+        # Inspired by the original implementation in [vllm](https://github.com/vllm-project/vllm)
+        # Calculate the number of blocks that can be allocated with the free memory
+        dtype_size = torch.tensor([], dtype=self.kv_cache_dtype).element_size()
+        cache_block_size = BLOCK_SIZE * self.num_kv_heads * self.head_size
+        total_cache_size = self.num_layers * cache_block_size * 2 * dtype_size
+
+        if max_total_tokens is None:
+            model_max_length = self.tokenizer.model_max_length
+            free_memory = get_free_memory(self.device, MEMORY_FRACTION)
+            spare_blocks = (
+                # Leave 5% for some wiggle room
+                int((free_memory * TGI_WIGGLE_ROOM) // total_cache_size)
+                + batch.num_blocks
+            )
+            spare_blocks = small_power_of_2(spare_blocks)
+
+            available_blocks = min(model_max_length, spare_blocks)
+            batch.num_blocks = available_blocks
+            batch.max_blocks = available_blocks
+            max_input_tokens = (
+                available_blocks - 1 if max_input_tokens is None else max_input_tokens
+            )
+            max_total_tokens = available_blocks
+
         try:
             self.init_kv_cache(
                 batch.num_blocks,
@@ -1393,6 +1426,7 @@ class FlashCausalLM(Model):
             )
             max_bt = batch.max_blocks
             max_s = max_bt * BLOCK_SIZE
+            batch_num_blocks = batch.num_blocks
 
             if SYSTEM == "rocm" and os.environ.get("PYTORCH_TUNABLEOP_ENABLED", False):
                 torch.cuda.tunable.tuning_enable(False)
@@ -1405,14 +1439,7 @@ class FlashCausalLM(Model):
 
         synchronize(self.device)
 
-        # Inspired by the original implementation in [vllm](https://github.com/vllm-project/vllm)
-        # Calculate the number of blocks that can be allocated with the free memory
-        dtype_size = torch.tensor([], dtype=self.kv_cache_dtype).element_size()
-        cache_block_size = BLOCK_SIZE * self.num_kv_heads * self.head_size
-        total_cache_size = self.num_layers * cache_block_size * 2 * dtype_size
-
         free_memory = get_free_memory(self.device, MEMORY_FRACTION)
-        batch_num_blocks = batch.num_blocks if batch is not None else 0
 
         num_blocks = (
             # Leave 5% for some wiggle room
@@ -1505,7 +1532,9 @@ class FlashCausalLM(Model):
                 logger.info, f"Cuda Graphs are disabled (CUDA_GRAPHS={CUDA_GRAPHS})."
             )
 
-        return int(num_blocks * BLOCK_SIZE)
+        assert max_input_tokens is not None
+        assert max_total_tokens is not None
+        return int(num_blocks * BLOCK_SIZE), max_input_tokens, max_total_tokens
 
     def tunableop_warmup(self, seqlen: int):
         input_ids = torch.zeros(seqlen, dtype=torch.int64, device=self.device)

server/text_generation_server/models/model.py

@@ -128,9 +128,11 @@ class Model(ABC):
     ) -> Tuple[List[Generation], Optional[B], Tuple[int, int]]:
         raise NotImplementedError
 
-    def warmup(self, batch: B) -> Optional[int]:
+    def warmup(
+        self, batch: B, max_input_tokens: Optional[int], max_total_tokens: Optional[int]
+    ) -> Tuple[Optional[int], int, int]:
         self.generate_token(batch)
-        return None
+        return None, 0, 0
 
     def decode_token(
         self,

server/text_generation_server/server.py

@@ -132,10 +132,22 @@ class TextGenerationService(generate_pb2_grpc.TextGenerationServiceServicer):
             batch = self.model.batch_type.from_pb(
                 request.batch, self.model.tokenizer, self.model.dtype, self.model.device
             )
-        max_supported_total_tokens = self.model.warmup(batch)
+
+        # Override default values with None for clearer semantics.
+        max_input_tokens = (
+            request.max_input_tokens if request.HasField("max_input_tokens") else None
+        )
+        max_total_tokens = (
+            request.max_total_tokens if request.HasField("max_total_tokens") else None
+        )
+        max_supported_total_tokens, max_input_tokens, max_total_tokens = (
+            self.model.warmup(batch, max_input_tokens, max_total_tokens)
+        )
 
         return generate_pb2.WarmupResponse(
-            max_supported_total_tokens=max_supported_total_tokens
+            max_supported_total_tokens=max_supported_total_tokens,
+            max_input_tokens=max_input_tokens,
+            max_total_tokens=max_total_tokens,
         )
 
     async def Prefill(self, request, context):