[ROCm] Bring up clang support for JAX+XLA

* Add clang path

* bazelrc env fixes

* Fix wheelhouse installation and preserve wheels

* dockerfile changes

* Add target.lst

* Change target architectures

* Install bzip2 and sqlite packages

.bazelrc

@@ -107,10 +107,18 @@ build:nvcc_clang --config=cuda_clang
 build:nvcc_clang --action_env=TF_NVCC_CLANG="1"
 build:nvcc_clang --@local_config_cuda//:cuda_compiler=nvcc
 
-build:rocm --crosstool_top=@local_config_rocm//crosstool:toolchain
-build:rocm --define=using_rocm=true --define=using_rocm_hipcc=true
-build:rocm --repo_env TF_NEED_ROCM=1
-build:rocm --action_env TF_ROCM_AMDGPU_TARGETS="gfx900,gfx906,gfx908,gfx90a,gfx1030"
+build:rocm_base --crosstool_top=@local_config_rocm//crosstool:toolchain
+build:rocm_base --define=using_rocm=true --define=using_rocm_hipcc=true
+build:rocm_base --repo_env TF_NEED_ROCM=1
+build:rocm_base --action_env TF_ROCM_AMDGPU_TARGETS="gfx900,gfx906,gfx908,gfx90a,gfx940,gfx941,gfx942,gfx1030,gfx1100"
+
+# Build with hipcc for ROCm and clang for the host.
+build:rocm --config=rocm_base
+build:rocm --action_env=TF_ROCM_CLANG="1"
+build:rocm --action_env=CLANG_COMPILER_PATH="/usr/lib/llvm-18/bin/clang"
+build:rocm --copt=-Wno-gnu-offsetof-extensions
+build:rocm --copt=-Qunused-arguments
+build:rocm --action_env=TF_HIPCC_CLANG="1"
 
 build:nonccl --define=no_nccl_support=true
 

build/build.py

@@ -298,9 +298,12 @@ def write_bazelrc(*, remote_build,
         f.write(
           f'build:cuda --repo_env HERMETIC_CUDA_COMPUTE_CAPABILITIES="{cuda_compute_capabilities}"\n')
     if enable_rocm:
-      f.write("build --config=rocm\n")
+      f.write("build --config=rocm_base\n")
       if not enable_nccl:
         f.write("build --config=nonccl\n")
+      if use_clang:
+        f.write("build --config=rocm\n")
+        f.write(f"build --action_env=CLANG_COMPILER_PATH={clang_path}\n")
     if python_version:
       f.write(
         "build --repo_env HERMETIC_PYTHON_VERSION=\"{python_version}\"".format(
@@ -482,7 +485,7 @@ def main():
       help="A comma-separated list of CUDA compute capabilities to support.")
   parser.add_argument(
       "--rocm_amdgpu_targets",
-      default="gfx900,gfx906,gfx908,gfx90a,gfx1030",
+      default="gfx900,gfx906,gfx908,gfx90a,gfx940,gfx941,gfx942,gfx1030,gfx1100",
       help="A comma-separated list of ROCm amdgpu targets to support.")
   parser.add_argument(
       "--rocm_path",

build/rocm/Dockerfile.ms

@@ -5,8 +5,14 @@ FROM ubuntu:20.04 AS rocm_base
 RUN --mount=type=cache,target=/var/cache/apt \
     apt-get update && apt-get install -y python3 python-is-python3
 
+# Install bzip2 and sqlite3 packages
+RUN apt-get update && apt-get install -y \
+    sqlite3 libsqlite3-dev \
+    libbz2-dev \
+    && rm -rf /var/lib/apt/lists/*
+
 # Add target file to help determine which device(s) to build for
-ARG GPU_DEVICE_TARGETS="gfx908 gfx90a gfx940 gfx941 gfx942 gfx1030 gfx1100"
+ARG GPU_DEVICE_TARGETS="gfx900 gfx906 gfx908 gfx90a gfx940 gfx941 gfx942 gfx1030 gfx1100"
 ENV GPU_DEVICE_TARGETS=${GPU_DEVICE_TARGETS}
 
 # Install ROCm
@@ -70,6 +76,7 @@ FROM rocm_base AS rt_build
 ARG JAX_VERSION
 ARG JAX_COMMIT
 ARG XLA_COMMIT
+ARG JAX_USE_CLANG
 
 LABEL com.amdgpu.rocm_version="$ROCM_VERSION" \
       com.amdgpu.python_version="$PYTHON_VERSION" \
@@ -77,7 +84,15 @@ LABEL com.amdgpu.rocm_version="$ROCM_VERSION" \
       com.amdgpu.jax_commit="$JAX_COMMIT" \
       com.amdgpu.xla_commit="$XLA_COMMIT"
 
+
+# Create a directory to copy and retain the wheels in the image.
+RUN mkdir -p /rocm_jax_wheels
+
 RUN --mount=type=cache,mode=0755,target=/root/.cache/pip \
     --mount=type=bind,source=wheelhouse,target=/wheelhouse \
-    pip install --find-links /wheelhouse jax jaxlib jax_rocm60_plugin jax_rocm60_pjrt
+    cp /wheelhouse/* /rocm_jax_wheels/ && \
+    ls -lah /wheelhouse && \
+    pip3 install wheelhouse/*none*.whl wheelhouse/*jaxlib*.whl && \
+    pip3 install wheelhouse/*rocm60*.whl
+
 

build/rocm/build_wheels/Dockerfile.manylinux_2_28_x86_64.rocm

@@ -7,3 +7,13 @@ ARG ROCM_BUILD_NUM
 RUN --mount=type=cache,target=/var/cache/dnf \
     --mount=type=bind,source=build/rocm/tools/get_rocm.py,target=get_rocm.py \
     python3 get_rocm.py --rocm-version=$ROCM_VERSION --job-name=$ROCM_BUILD_JOB --build-num=$ROCM_BUILD_NUM
+
+ARG GPU_DEVICE_TARGETS="gfx900 gfx906 gfx908 gfx90a gfx940 gfx941 gfx942 gfx1030 gfx1100"
+RUN printf '%s\n' > /opt/rocm/bin/target.lst ${GPU_DEVICE_TARGETS}
+
+# Install LLVM 18 and dependencies.
+RUN --mount=type=cache,target=/var/cache/dnf \
+    dnf install -y wget && dnf clean all
+RUN mkdir /tmp/llvm-project && wget -qO - https://github.com/llvm/llvm-project/archive/refs/tags/llvmorg-18.1.8.tar.gz | tar -xz -C /tmp/llvm-project --strip-components 1 && \
+    mkdir /tmp/llvm-project/build && cd /tmp/llvm-project/build && cmake -DLLVM_ENABLE_PROJECTS='clang;lld' -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/lib/llvm-18/ ../llvm && \
+    make -j$(nproc) && make -j$(nproc) install && rm -rf /tmp/llvm-project

build/rocm/docker/Dockerfile.jax-ubu22

@@ -3,8 +3,14 @@ FROM ubuntu:22.04
 RUN --mount=type=cache,target=/var/cache/apt \
     apt-get update && apt-get install -y python3 python-is-python3
 
+# Install bzip2 and sqlite3 packages
+RUN apt-get update && apt-get install -y \
+    sqlite3 libsqlite3-dev \
+    libbz2-dev \
+    && rm -rf /var/lib/apt/lists/*
+
 # Add target file to help determine which device(s) to build for
-ARG GPU_DEVICE_TARGETS="gfx908 gfx90a gfx940 gfx941 gfx942 gfx1030 gfx1100"
+ARG GPU_DEVICE_TARGETS="gfx900 gfx906 gfx908 gfx90a gfx940 gfx941 gfx942 gfx1030 gfx1100"
 ENV GPU_DEVICE_TARGETS=${GPU_DEVICE_TARGETS}
 
 # Install ROCM
@@ -61,4 +67,6 @@ LABEL com.amdgpu.rocm_version="$ROCM_VERSION" \
 
 RUN --mount=type=cache,mode=0755,target=/root/.cache/pip \
     --mount=type=bind,source=wheelhouse,target=/wheelhouse \
-    pip3 install --find-links /wheelhouse jax jaxlib jax_rocm60_plugin jax_rocm60_pjrt
+    ls -lah /wheelhouse && \
+    pip3 install wheelhouse/*none*.whl wheelhouse/*jaxlib*.whl && \
+    pip3 install wheelhouse/*rocm60*.whl

build/rocm/docker/Dockerfile.jax-ubu24

@@ -3,6 +3,12 @@ FROM ubuntu:24.04
 RUN --mount=type=cache,target=/var/cache/apt \
     apt-get update && apt-get install -y python3 python-is-python3 python3-pip
 
+# Install bzip2 and sqlite3 packages
+RUN apt-get update && apt-get install -y \
+    sqlite3 libsqlite3-dev \
+    libbz2-dev \
+    && rm -rf /var/lib/apt/lists/*
+
 # Add target file to help determine which device(s) to build for
 ARG GPU_DEVICE_TARGETS="gfx908 gfx90a gfx940 gfx941 gfx942 gfx1030 gfx1100"
 ENV GPU_DEVICE_TARGETS=${GPU_DEVICE_TARGETS}
@@ -60,4 +66,6 @@ LABEL com.amdgpu.rocm_version="$ROCM_VERSION" \
 
 RUN --mount=type=cache,mode=0755,target=/root/.cache/pip \
     --mount=type=bind,source=wheelhouse,target=/wheelhouse \
-    pip3 install --break-system-packages --find-links /wheelhouse jax jaxlib jax_rocm60_plugin jax_rocm60_pjrt
+    ls -lah /wheelhouse && \
+    pip3 install wheelhouse/*none*.whl wheelhouse/*jaxlib*.whl && \
+    pip3 install wheelhouse/*rocm60*.whl

build/rocm/tools/build_wheels.py

@@ -56,6 +56,36 @@ def update_rocm_targets(rocm_path, targets):
     open(version_fp, "a").close()
 
 
+def find_clang_path():
+    llvm_base_path = "/usr/lib/"
+    # Search for llvm directories and pick the highest version.
+    llvm_dirs = [d for d in os.listdir(llvm_base_path) if d.startswith("llvm-")]
+    if llvm_dirs:
+        # Sort to get the highest llvm version.
+        llvm_dirs.sort(reverse=True)
+        clang_bin_dir = os.path.join(llvm_base_path, llvm_dirs[0], "bin")
+
+        # Prefer versioned clang binaries (e.g., clang-18).
+        versioned_clang = None
+        generic_clang = None
+
+        for f in os.listdir(clang_bin_dir):
+            # Checks for versioned clang binaries.
+            if f.startswith("clang-") and f[6:].isdigit():
+                versioned_clang = os.path.join(clang_bin_dir, f)
+            # Fallback to non-versioned clang.
+            elif f == "clang":
+                generic_clang = os.path.join(clang_bin_dir, f)
+
+        # Return versioned clang if available, otherwise return generic clang.
+        if versioned_clang:
+            return versioned_clang
+        elif generic_clang:
+            return generic_clang
+
+    return None
+
+
 def build_jaxlib_wheel(
     jax_path, rocm_path, python_version, xla_path=None, compiler="gcc"
 ):
@@ -70,6 +100,14 @@ def build_jaxlib_wheel(
         "--use_clang=%s" % use_clang,
     ]
 
+    # Add clang path if clang is used.
+    if compiler == "clang":
+        clang_path = find_clang_path()
+        if clang_path:
+            cmd.append("--clang_path=%s" % clang_path)
+        else:
+            raise RuntimeError("Clang binary not found in /usr/lib/llvm-*")
+
     if xla_path:
         cmd.append("--bazel_options=--override_repository=xla=%s" % xla_path)
 
@@ -168,18 +206,26 @@ def to_cpy_ver(python_version):
 
 
 def fix_wheel(path, jax_path):
-    # NOTE(mrodden): fixwheel needs auditwheel 6.0.0, which has a min python of 3.8
-    # so use one of the CPythons in /opt to run
-    env = dict(os.environ)
-    py_bin = "/opt/python/cp310-cp310/bin"
-    env["PATH"] = "%s:%s" % (py_bin, env["PATH"])
+    try:
+        # NOTE(mrodden): fixwheel needs auditwheel 6.0.0, which has a min python of 3.8
+        # so use one of the CPythons in /opt to run
+        env = dict(os.environ)
+        py_bin = "/opt/python/cp310-cp310/bin"
+        env["PATH"] = "%s:%s" % (py_bin, env["PATH"])
 
-    cmd = ["pip", "install", "auditwheel>=6"]
-    subprocess.run(cmd, check=True, env=env)
+        cmd = ["pip", "install", "auditwheel>=6"]
+        subprocess.run(cmd, check=True, env=env)
 
-    fixwheel_path = os.path.join(jax_path, "build/rocm/tools/fixwheel.py")
-    cmd = ["python", fixwheel_path, path]
-    subprocess.run(cmd, check=True, env=env)
+        fixwheel_path = os.path.join(jax_path, "build/rocm/tools/fixwheel.py")
+        cmd = ["python", fixwheel_path, path]
+        subprocess.run(cmd, check=True, env=env)
+        LOG.info("Wheel fix completed successfully.")
+    except subprocess.CalledProcessError as cpe:
+        LOG.error(f"Subprocess failed with error: {cpe}")
+        raise
+    except Exception as e:
+        LOG.error(f"An unexpected error occurred: {e}")
+        raise
 
 
 def parse_args():

jaxlib/BUILD

@@ -240,6 +240,7 @@ pybind_extension(
         "//jaxlib:kernel_nanobind_helpers",
         "@com_google_absl//absl/status",
         "@local_config_rocm//rocm:rocm_headers",
+        "@local_config_rocm//rocm:hip",
         "@nanobind",
         "@xla//third_party/python_runtime:headers",
         "@xla//xla:status",