[CPU] Upgrade CPU backend to torch-2.6

.buildkite/run-cpu-test.sh

@@ -19,13 +19,14 @@ remove_docker_container
 
 # Run the image, setting --shm-size=4g for tensor parallel.
 docker run -itd --entrypoint /bin/bash -v ~/.cache/huggingface:/root/.cache/huggingface --cpuset-cpus="$CORE_RANGE"  \
- --cpuset-mems="$NUMA_NODE" --privileged=true --network host -e HF_TOKEN --env VLLM_CPU_KVCACHE_SPACE=4 --shm-size=4g --name cpu-test-"$BUILDKITE_BUILD_NUMBER"-"$NUMA_NODE" cpu-test-"$BUILDKITE_BUILD_NUMBER"
+ --cpuset-mems="$NUMA_NODE" --privileged=true -e HF_TOKEN --env VLLM_CPU_KVCACHE_SPACE=4 --shm-size=4g --name cpu-test-"$BUILDKITE_BUILD_NUMBER"-"$NUMA_NODE" cpu-test-"$BUILDKITE_BUILD_NUMBER"
 docker run -itd --entrypoint /bin/bash -v ~/.cache/huggingface:/root/.cache/huggingface --cpuset-cpus="$CORE_RANGE" \
- --cpuset-mems="$NUMA_NODE" --privileged=true --network host -e HF_TOKEN --env VLLM_CPU_KVCACHE_SPACE=4 --shm-size=4g --name cpu-test-"$BUILDKITE_BUILD_NUMBER"-avx2-"$NUMA_NODE" cpu-test-"$BUILDKITE_BUILD_NUMBER"-avx2
+ --cpuset-mems="$NUMA_NODE" --privileged=true -e HF_TOKEN --env VLLM_CPU_KVCACHE_SPACE=4 --shm-size=4g --name cpu-test-"$BUILDKITE_BUILD_NUMBER"-avx2-"$NUMA_NODE" cpu-test-"$BUILDKITE_BUILD_NUMBER"-avx2
 
 function cpu_tests() {
   set -e
   export NUMA_NODE=$2
+  export BUILDKITE_BUILD_NUMBER=$3
 
   # offline inference
   docker exec cpu-test-"$BUILDKITE_BUILD_NUMBER"-avx2-"$NUMA_NODE" bash -c "
@@ -36,6 +37,7 @@ function cpu_tests() {
   docker exec cpu-test-"$BUILDKITE_BUILD_NUMBER"-"$NUMA_NODE" bash -c "
     set -e
     pip install -r vllm/requirements/test.txt
+    pip install -r vllm/requirements/cpu.txt
     pytest -v -s tests/models/decoder_only/language -m cpu_model
     pytest -v -s tests/models/embedding/language -m cpu_model
     pytest -v -s tests/models/encoder_decoder/language -m cpu_model
@@ -85,4 +87,4 @@ function cpu_tests() {
 
 # All of CPU tests are expected to be finished less than 40 mins.
 export -f cpu_tests
-timeout 40m bash -c "cpu_tests $CORE_RANGE $NUMA_NODE"
+timeout 40m bash -c "cpu_tests $CORE_RANGE $NUMA_NODE $BUILDKITE_BUILD_NUMBER"

Dockerfile.cpu

@@ -22,7 +22,7 @@ ENV LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libtcmalloc_minimal.so.4:/usr/local/li
 
 RUN echo 'ulimit -c 0' >> ~/.bashrc
 
-RUN pip install intel_extension_for_pytorch==2.5.0
+RUN pip install intel_extension_for_pytorch==2.6.0
 
 WORKDIR /workspace
 

cmake/cpu_extension.cmake

@@ -149,7 +149,7 @@ if (AVX512_FOUND AND NOT AVX512_DISABLED)
     FetchContent_Declare(
         oneDNN
         GIT_REPOSITORY https://github.com/oneapi-src/oneDNN.git
-        GIT_TAG  v3.6
+        GIT_TAG  v3.7.1
         GIT_PROGRESS TRUE
         GIT_SHALLOW TRUE
     )

requirements/cpu.txt

@@ -2,7 +2,7 @@
 -r common.txt
 
 # Dependencies for CPUs
-torch==2.5.1+cpu; platform_machine != "ppc64le" and platform_machine != "aarch64" and platform_system != "Darwin" and platform_machine != "s390x"
+torch==2.6.0+cpu; platform_machine == "x86_64"
 torch==2.5.1; platform_machine == "ppc64le" or platform_machine == "aarch64" or platform_system == "Darwin"
 torch==2.7.0.dev20250304; platform_machine == "s390x"
 

tests/lora/test_qwen2vl.py

@@ -12,7 +12,7 @@
 from vllm.platforms import current_platform
 
 
-@pytest.fixture(autouse=True)
+@pytest.fixture(autouse=not current_platform.is_cpu())
 def v1(run_with_both_engines_lora):
     # Simple autouse wrapper to run both engines for each test
     # This can be promoted up to conftest.py to run for every

vllm/attention/ops/ipex_attn.py

@@ -17,7 +17,7 @@ class _PagedAttention:
 
     @staticmethod
     def get_supported_head_sizes() -> List[int]:
-        return [32, 64, 80, 96, 112, 128, 256]
+        return [32, 64, 80, 96, 112, 128, 192, 256]
 
     @staticmethod
     def get_kv_cache_shape(

vllm/executor/multiproc_worker_utils.py

@@ -254,10 +254,11 @@ def _run_worker_process(
     # online (in situ) tuning is enabled.
     # Offline tuning API (record_untuned_is_enabled()) only
     # available in PyTorch 2.6 or later.
-    import torch.cuda.tunable as tunable
-    if (tunable.is_enabled() and tunable.tuning_is_enabled()
-            and not tunable.record_untuned_is_enabled()):
-        tunable.write_file()
+    if torch.cuda.is_available():
+        import torch.cuda.tunable as tunable
+        if (tunable.is_enabled() and tunable.tuning_is_enabled()
+                and not tunable.record_untuned_is_enabled()):
+            tunable.write_file()
 
     logger.info("Worker exiting")
 

vllm/model_executor/layers/fused_moe/layer.py

@@ -193,10 +193,11 @@ def forward_cpu(
         global_num_experts: int = -1,
         expert_map: Optional[torch.Tensor] = None,
         custom_routing_function: Optional[Callable] = None,
+        scoring_func: str = "softmax",
+        e_score_correction_bias: Optional[torch.Tensor] = None,
         activation: str = "silu",
         **kwargs,
     ):
-        assert custom_routing_function is None
         assert activation == "silu", f"{activation} is not supported."
         return layer.ipex_fusion(
             x,
@@ -206,6 +207,9 @@ def forward_cpu(
             renormalize,
             topk_group,
             num_expert_group,
+            custom_routing_function,
+            scoring_func,
+            e_score_correction_bias,
         )
 
     def forward_tpu(

vllm/platforms/cpu.py

@@ -121,6 +121,9 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
         # Disable torch async compiling which won't work with daemonic processes
         os.environ["TORCHINDUCTOR_COMPILE_THREADS"] = "1"
 
+        # MLA attention is not supported
+        os.environ["VLLM_MLA_DISABLE"] = "1"
+
         # Intel OpenMP setting
         ld_prealod_str = os.getenv("LD_PRELOAD", "")
         if "libiomp5.so" in ld_prealod_str: