transformers flash llm/vlm enabling in ipex (#3152)

* transformers flash llm/vlm enabling in xpu

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

* ipex cpu could also support in function

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

---------

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

Author: sywangyi

Dockerfile_intel

@@ -87,7 +87,7 @@ RUN echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https:/
 
 RUN mv /tmp/intel-for-pytorch-gpu-dev.list /etc/apt/sources.list.d
 
-RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt install -y xpu-smi cmake ninja-build pciutils intel-ocloc
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt install -y xpu-smi cmake ninja-build pciutils intel-ocloc libnl-genl-3-200
 
 # Text Generation Inference base env
 ENV HF_HOME=/data \
@@ -98,9 +98,7 @@ ENV HF_HOME=/data \
 
 
 WORKDIR /usr/src
-RUN pip install torch==2.6.0 --index-url https://download.pytorch.org/whl/test/xpu
-
-RUN pip install triton-xpu==3.2.0b1 --no-cache-dir
+RUN pip install torch==2.6.0 torchvision==0.21.0 --index-url https://download.pytorch.org/whl/xpu
 
 # Install server
 COPY proto proto

server/text_generation_server/models/__init__.py

@@ -201,7 +201,8 @@
 if MAMBA_AVAILABLE:
     __all__.append(Mamba)
 
-FLASH_TRANSFORMERS_BACKEND = torch.cuda.is_available()
+FLASH_TRANSFORMERS_BACKEND = torch.cuda.is_available() or SYSTEM == "ipex"
+
 try:
     from text_generation_server.models.transformers_flash_causal_lm import (
         TransformersFlashCausalLM,

server/text_generation_server/models/transformers_flash_causal_lm.py

@@ -12,7 +12,7 @@
 from text_generation_server.layers.attention import paged_attention, attention, Seqlen
 from text_generation_server.layers.attention.kv_cache import KVScales, KVCache
 from text_generation_server.models.globals import ATTENTION
-
+from text_generation_server.utils.import_utils import SYSTEM
 
 tracer = trace.get_tracer(__name__)
 
@@ -115,8 +115,11 @@ def __init__(
         if torch.cuda.is_available():
             device = torch.device(f"cuda:{rank}")
             dtype = default_dtype if dtype is None else dtype
-        elif hasattr(torch, "xpu") and torch.xpu.is_available():
-            device = torch.device("xpu")
+        elif SYSTEM == "ipex":
+            if hasattr(torch, "xpu") and torch.xpu.is_available():
+                device = torch.device(f"xpu:{rank}")
+            else:
+                device = torch.device("cpu")
             dtype = default_dtype if dtype is None else dtype
         else:
             raise ValueError(

server/text_generation_server/models/transformers_flash_vlm.py

@@ -14,6 +14,7 @@
 from text_generation_server.layers.attention.kv_cache import KVScales, KVCache
 from text_generation_server.models.globals import ATTENTION
 import torch.nn.functional as F
+from text_generation_server.utils.import_utils import SYSTEM
 
 tracer = trace.get_tracer(__name__)
 
@@ -174,8 +175,11 @@ def __init__(
         if torch.cuda.is_available():
             device = torch.device(f"cuda:{rank}")
             dtype = default_dtype if dtype is None else dtype
-        elif hasattr(torch, "xpu") and torch.xpu.is_available():
-            device = torch.device("xpu")
+        elif SYSTEM == "ipex":
+            if hasattr(torch, "xpu") and torch.xpu.is_available():
+                device = torch.device(f"xpu:{rank}")
+            else:
+                device = torch.device("cpu")
             dtype = default_dtype if dtype is None else dtype
         else:
             raise ValueError(

server/text_generation_server/utils/dist.py

@@ -73,6 +73,13 @@ def initialize_torch_distributed():
             if SYSTEM == "ipex":
                 import intel_extension_for_pytorch as ipex
 
+                if torch.xpu.is_available():
+                    assert (
+                        WORLD_SIZE <= torch.xpu.device_count()
+                    ), "Each process is one xpu"
+                    device = RANK % torch.xpu.device_count()
+                    torch.xpu.set_device(device)
+
                 ipex.distributed.init_process_group(
                     backend="ccl",
                     world_size=WORLD_SIZE,