[ci] Use sccache to build images (#5419)

Signed-off-by: kevin <kevin@anyscale.com>

.buildkite/test-template-aws.j2

@@ -7,7 +7,7 @@ steps:
       queue: cpu_queue
     commands:
       - "aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/q9t5s3a7"
-      - "docker build --build-arg max_jobs=16 --tag {{ docker_image }} --target test --progress plain ."
+      - "docker build --build-arg max_jobs=16 --build-arg USE_SCCACHE=1 --tag {{ docker_image }} --target test --progress plain ."
       - "docker push {{ docker_image }}"
     env:
       DOCKER_BUILDKIT: "1"

Dockerfile

@@ -10,7 +10,7 @@
 FROM nvidia/cuda:12.4.1-devel-ubuntu22.04 AS dev
 
 RUN apt-get update -y \
-    && apt-get install -y python3-pip git
+    && apt-get install -y python3-pip git curl sudo
 
 # Workaround for https://github.com/openai/triton/issues/2507 and
 # https://github.com/pytorch/pytorch/issues/107960 -- hopefully
@@ -70,10 +70,28 @@ ENV NVCC_THREADS=$nvcc_threads
 # make sure punica kernels are built (for LoRA)
 ENV VLLM_INSTALL_PUNICA_KERNELS=1
 
+ARG USE_SCCACHE
+# if USE_SCCACHE is set, use sccache to speed up compilation
+RUN --mount=type=cache,target=/root/.cache/pip \
+    if [ "$USE_SCCACHE" = "1" ]; then \
+        echo "Installing sccache..." \
+        && curl -L -o sccache.tar.gz https://github.com/mozilla/sccache/releases/download/v0.8.1/sccache-v0.8.1-x86_64-unknown-linux-musl.tar.gz \
+        && tar -xzf sccache.tar.gz \
+        && sudo mv sccache-v0.8.1-x86_64-unknown-linux-musl/sccache /usr/bin/sccache \
+        && rm -rf sccache.tar.gz sccache-v0.8.1-x86_64-unknown-linux-musl \
+        && export SCCACHE_BUCKET=vllm-build-sccache \
+        && export SCCACHE_REGION=us-west-2 \
+        && sccache --show-stats \
+        && python3 setup.py bdist_wheel --dist-dir=dist \
+        && sccache --show-stats; \
+    fi
+
 ENV CCACHE_DIR=/root/.cache/ccache
 RUN --mount=type=cache,target=/root/.cache/ccache \
     --mount=type=cache,target=/root/.cache/pip \
-    python3 setup.py bdist_wheel --dist-dir=dist
+    if [ "$USE_SCCACHE" != "1" ]; then \
+        python3 setup.py bdist_wheel --dist-dir=dist; \
+    fi
 
 # check the size of the wheel, we cannot upload wheels larger than 100MB
 COPY .buildkite/check-wheel-size.py check-wheel-size.py

setup.py

@@ -140,6 +140,7 @@ class cmake_build_ext(build_ext):
             cmake_args += [
                 '-DCMAKE_CXX_COMPILER_LAUNCHER=sccache',
                 '-DCMAKE_CUDA_COMPILER_LAUNCHER=sccache',
+                '-DCMAKE_C_COMPILER_LAUNCHER=sccache',
             ]
         elif is_ccache_available():
             cmake_args += [
@@ -171,7 +172,6 @@ class cmake_build_ext(build_ext):
         else:
             # Default build tool to whatever cmake picks.
             build_tool = []
-
         subprocess.check_call(
             ['cmake', ext.cmake_lists_dir, *build_tool, *cmake_args],
             cwd=self.build_temp)