[CPU] Apply uv as package manager (#14106)

.github/CI_PERMISSIONS.json

@@ -207,7 +207,7 @@
         "can_tag_run_ci_label": true,
         "can_rerun_failed_ci": true,
         "cooldown_interval_minutes": 0,
-        "reason": "top contributor"
+        "reason": "custom override"
     },
     "ZhengdQin": {
         "can_tag_run_ci_label": true,
@@ -230,7 +230,7 @@
     "airMeng": {
         "can_tag_run_ci_label": true,
         "can_rerun_failed_ci": true,
-        "cooldown_interval_minutes": 60,
+        "cooldown_interval_minutes": 0,
         "reason": "custom override"
     },
     "alisonshao": {

.github/workflows/pr-test-xeon.yml

@@ -80,13 +80,13 @@ jobs:
         timeout-minutes: 5
         run: |
           docker exec -w /sglang-checkout/ ci_sglang_xeon \
-            bash -c "python3 -c 'import torch; import sgl_kernel; assert torch._C._cpu._is_amx_tile_supported(); assert hasattr(torch.ops.sgl_kernel, \"convert_weight_packed\"); '"
+            bash -c "source /opt/.venv/bin/activate && python3 -c 'import torch; import sgl_kernel; assert torch._C._cpu._is_amx_tile_supported(); assert hasattr(torch.ops.sgl_kernel, \"convert_weight_packed\"); '"
 
       - name: Run unit tests
         timeout-minutes: 36
         run: |
           docker exec -w /sglang-checkout/ ci_sglang_xeon \
-            bash -c "cd ./test/srt && python3 run_suite.py --suite per-commit-cpu --timeout-per-file 1500"
+            bash -c "source /opt/.venv/bin/activate && cd ./test/srt && python3 run_suite.py --suite per-commit-cpu --timeout-per-file 1500"
 
       - name: Change permission
         timeout-minutes: 2

docker/xeon.Dockerfile

@@ -18,35 +18,39 @@ RUN apt-get update && \
     vim \
     gcc \
     g++ \
-    make
+    make \
+    libsqlite3-dev \
+    google-perftools \
+    libtbb-dev \
+    libnuma-dev \
+    numactl
+
+WORKDIR /opt
+
+RUN curl -LsSf https://astral.sh/uv/install.sh | sh && \
+    source $HOME/.local/bin/env && \
+    uv venv --python 3.12
+
+RUN echo -e '[[index]]\nname = "torch"\nurl = "https://download.pytorch.org/whl/cpu"\n\n[[index]]\nname = "torchvision"\nurl = "https://download.pytorch.org/whl/cpu"\n\n[[index]]\nname = "triton"\nurl = "https://download.pytorch.org/whl/cpu"' > .venv/uv.toml
+
+ENV UV_CONFIG_FILE=/opt/.venv/uv.toml
 
 WORKDIR /sgl-workspace
-
-RUN curl -fsSL -o miniforge.sh -O https://github.com/conda-forge/miniforge/releases/download/25.3.1-0/Miniforge3-25.3.1-0-Linux-x86_64.sh && \
-    bash miniforge.sh -b -p ./miniforge3 && \
-    rm -f miniforge.sh && \
-    . miniforge3/bin/activate && \
-    conda install -y libsqlite==3.48.0 gperftools tbb libnuma numactl
-
-ENV PATH=/sgl-workspace/miniforge3/bin:/sgl-workspace/miniforge3/condabin:${PATH}
-ENV PIP_ROOT_USER_ACTION=ignore
-ENV CONDA_PREFIX=/sgl-workspace/miniforge3
-
-RUN pip config set global.index-url https://download.pytorch.org/whl/cpu && \
-    pip config set global.extra-index-url https://pypi.org/simple
-
-RUN git clone ${SGLANG_REPO} sglang && \
+RUN source $HOME/.local/bin/env && \
+    source /opt/.venv/bin/activate && \
+    git clone ${SGLANG_REPO} sglang && \
     cd sglang && \
     git checkout ${VER_SGLANG} && \
     cd python && \
     cp pyproject_cpu.toml pyproject.toml && \
-    pip install . && \
-    pip install torch==${VER_TORCH} torchvision==${VER_TORCHVISION} triton==${VER_TRITON} --force-reinstall && \
+    uv pip install . && \
+    uv pip install torch==${VER_TORCH} torchvision==${VER_TORCHVISION} triton==${VER_TRITON} --force-reinstall && \
     cd ../sgl-kernel && \
     cp pyproject_cpu.toml pyproject.toml && \
-    pip install .
+    uv pip install .
 
 ENV SGLANG_USE_CPU_ENGINE=1
-ENV LD_PRELOAD=/sgl-workspace/miniforge3/lib/libiomp5.so:/sgl-workspace/miniforge3/lib/libtcmalloc.so:/sgl-workspace/miniforge3/lib/libtbbmalloc.so.2
+ENV LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4:/usr/lib/x86_64-linux-gnu/libtbbmalloc.so:/opt/.venv/lib/libiomp5.so
+RUN echo 'source /opt/.venv/bin/activate' >> /root/.bashrc
 
 WORKDIR /sgl-workspace/sglang

sgl-kernel/csrc/cpu/CMakeLists.txt

@@ -54,6 +54,22 @@ if(DEFINED ENV{CONDA_PREFIX})
         message(FATAL_ERROR "libnuma not found in Conda environment at ${CONDA_LIB_DIR}\n"
                             "Please install it using: conda install libnuma numactl\n")
     endif()
+else()
+    if(DEFINED ENV{VIRTUAL_ENV})
+        set(VENV_LIB_DIR "$ENV{VIRTUAL_ENV}/lib")
+        message(STATUS "Using venv lib dir: ${VENV_LIB_DIR}")
+        link_directories(${VENV_LIB_DIR})
+        set(VENV_INCLUDE_DIR "$ENV{VIRTUAL_ENV}/include")
+        include_directories(${VENV_INCLUDE_DIR})
+    endif()
+    # Look for libnuma in system env paths
+    find_library(NUMA_LIB numa)
+    if(NUMA_LIB)
+        message(STATUS "Found libnuma: ${NUMA_LIB}")
+    else()
+        message(FATAL_ERROR "libnuma not found in system environment\n"
+                            "Please install it using: apt-get install libnuma numactl\n")
+    endif()
 endif()
 
 file(GLOB SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/*.cpp")