Create the compute type at launch time (if not provided in the env). (#1505)

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Fixes # (issue)


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launcher/src/main.rs

@@ -982,7 +982,20 @@ fn spawn_shards(
     Ok(())
 }
 
+fn compute_type(num_shard: usize) -> Option<String> {
+    let output = Command::new("nvidia-smi")
+        .args(["--query-gpu=gpu_name", "--format=csv"])
+        .output()
+        .ok()?;
+    let output = String::from_utf8(output.stdout).ok()?;
+    let fullname = output.split('\n').nth(1)?;
+    let cardname = fullname.replace(' ', "-").to_lowercase();
+    let compute_type = format!("{num_shard}-{cardname}");
+    Some(compute_type)
+}
+
 fn spawn_webserver(
+    num_shard: usize,
     args: Args,
     shutdown: Arc<AtomicBool>,
     shutdown_receiver: &mpsc::Receiver<()>,
@@ -1072,6 +1085,13 @@ fn spawn_webserver(
         envs.push(("HUGGING_FACE_HUB_TOKEN".into(), api_token.into()))
     };
 
+    // Parse Compute type
+    if let Ok(compute_type) = env::var("COMPUTE_TYPE") {
+        envs.push(("COMPUTE_TYPE".into(), compute_type.into()))
+    } else if let Some(compute_type) = compute_type(num_shard) {
+        envs.push(("COMPUTE_TYPE".into(), compute_type.into()))
+    }
+
     let mut webserver = match Command::new("text-generation-router")
         .args(router_args)
         .envs(envs)
@@ -1265,8 +1285,8 @@ fn main() -> Result<(), LauncherError> {
         return Ok(());
     }
 
-    let mut webserver =
-        spawn_webserver(args, shutdown.clone(), &shutdown_receiver).map_err(|err| {
+    let mut webserver = spawn_webserver(num_shard, args, shutdown.clone(), &shutdown_receiver)
+        .map_err(|err| {
             shutdown_shards(shutdown.clone(), &shutdown_receiver);
             err
         })?;

router/src/server.rs

@@ -649,13 +649,22 @@ async fn chat_completions(
                 )
         };
 
-        let (headers, response_stream) =
-            generate_stream_internal(infer, compute_type, Json(generate_request), on_message_callback).await;
+        let (headers, response_stream) = generate_stream_internal(
+            infer,
+            compute_type,
+            Json(generate_request),
+            on_message_callback,
+        )
+        .await;
         let sse = Sse::new(response_stream).keep_alive(KeepAlive::default());
         Ok((headers, sse).into_response())
     } else {
-        let (headers, Json(generation)) =
-            generate(Extension(infer), Extension(compute_type), Json(generate_request)).await?;
+        let (headers, Json(generation)) = generate(
+            Extension(infer),
+            Extension(compute_type),
+            Json(generate_request),
+        )
+        .await?;
 
         let current_time = std::time::SystemTime::now()
             .duration_since(std::time::UNIX_EPOCH)
@@ -943,7 +952,8 @@ pub async fn run(
         Router::new().route("/invocations", post(compat_generate)) // Use 'compat_generate' otherwise
     };
 
-    let compute_type = ComputeType(std::env::var("COMPUTE_TYPE").unwrap_or("gpu+optimized".to_string()));
+    let compute_type =
+        ComputeType(std::env::var("COMPUTE_TYPE").unwrap_or("gpu+optimized".to_string()));
 
     // Combine routes and layers
     let app = Router::new()