support deepspeed

server/bloom_inference/model.py

@@ -1,10 +1,13 @@
 import torch
 import torch.distributed
+import io
+import json
 
 from dataclasses import dataclass
 from pathlib import Path
 from typing import List, Tuple, Optional, Dict
 
+from huggingface_hub import snapshot_download
 from transformers import AutoTokenizer, AutoModelForCausalLM, AutoConfig
 from transformers.modeling_utils import no_init_weights
 
@@ -450,3 +453,66 @@ class BLOOMSharded(BLOOM):
 
         outputs.logits = logits
         return outputs
+
+
+class BLOOMDeepSpeed(BLOOM):
+    def __init__(self, model_name):
+        super(BLOOM, self).__init__()
+
+        import deepspeed
+        from deepspeed.comm import init_distributed, get_rank, get_world_size
+
+        init_distributed("nccl")
+        self.rank = get_rank()
+        self.world_size = get_world_size()
+        self.master = self.rank == 0
+
+        if torch.cuda.is_available():
+            self.device = torch.device(f"cuda:{self.rank}")
+            dtype = torch.float16
+        else:
+            raise ValueError("DeepSpeed only supports CUDA")
+
+        model_root_dir = snapshot_download(
+            model_name, allow_patterns=["*"], local_files_only=True
+        )
+
+        if model_name == "microsoft/bloom-deepspeed-inference-fp16":
+            if self.world_size != 8:
+                raise ValueError("microsoft/bloom-deepspeed-inference-fp16 only supports 8 GPUs")
+            checkpoints_json_path = Path(model_root_dir) / "ds_inference_config.json"
+            data = json.load(checkpoints_json_path.open("r"))
+            for key in data["checkpoints"].keys():
+                for i, v in enumerate(data["checkpoints"][key]):
+                    data["checkpoints"][key][i] = str(Path(model_root_dir) / v)
+        else:
+            file_list = [str(entry) for entry in Path(model_root_dir).rglob("*.[bp][it][n]") if entry.is_file()]
+            data = {"type": "BLOOM", "checkpoints": file_list, "version": 1.0}
+
+        checkpoints_json = Path("checkpoints.json")
+        with checkpoints_json.open("w") as f:
+            json.dump(data, f)
+
+        self.tokenizer = AutoTokenizer.from_pretrained(model_name, padding_side="left")
+        config = AutoConfig.from_pretrained(model_name)
+
+        with deepspeed.OnDevice(dtype=dtype, device="meta", enabled=True):
+            model = AutoModelForCausalLM.from_config(config, torch_dtype=torch.bfloat16)
+
+        model = model.eval()
+
+        model = deepspeed.init_inference(
+            model=model,
+            mp_size=self.world_size,
+            dtype=dtype,
+            replace_with_kernel_inject=True,
+            replace_method="auto",
+            enable_cuda_graph=False,
+            checkpoint=str(checkpoints_json),
+            mpu=None,
+            args=None,
+            training_mp_size=1
+        )
+
+        self.model = model.module
+        self.num_heads = config.n_head // self.world_size

server/bloom_inference/server.py

@@ -6,7 +6,7 @@ from pathlib import Path
 from typing import Optional, List
 
 from bloom_inference.cache import Cache
-from bloom_inference.model import BLOOM, Batch, BLOOMSharded
+from bloom_inference.model import BLOOM, Batch, BLOOMDeepSpeed
 from bloom_inference.pb import generate_pb2_grpc, generate_pb2
 
 
@@ -116,9 +116,9 @@ def serve(model_name, sharded, shard_directory):
     ):
         unix_socket_template = "unix:///tmp/bloom-inference-{}"
         if sharded:
-            if shard_directory is None:
-                raise ValueError("shard_directory must be set when sharded is True")
-            model = BLOOMSharded(model_name, shard_directory)
+            # if shard_directory is None:
+            #     raise ValueError("shard_directory must be set when sharded is True")
+            model = BLOOMDeepSpeed(model_name)
             server_urls = [
                 unix_socket_template.format(rank) for rank in range(model.world_size)
             ]

server/poetry.lock

@@ -197,7 +197,7 @@ python-versions = ">=3.7"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9"
-content-hash = "cedd0aebeb3731e2bbddf017a2ee6074c285866354272f8dfe930e9606437a25"
+content-hash = "ed2061d45e5885616d5424a01e5ac8c57b9a52fd758a509a9c17406656ce5156"
 
 [metadata.files]
 accelerate = [

server/pyproject.toml

@@ -8,7 +8,6 @@ authors = ["Olivier Dehaene <olivier@huggingface.co>"]
 python = "^3.9"
 protobuf = "^4.21.7"
 grpcio = "^1.49.1"
-torch = "^1.12.1"
 typer = "^0.6.1"
 grpcio-reflection = "^1.49.1"
 accelerate = "^0.12.0"