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# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
ROCM_VERSION=${PV}
PYTHON_COMPAT=( python3_{10..14} python3_13t )
inherit check-reqs cmake flag-o-matic multiprocessing python-r1 rocm
GTEST_COMMIT="b85864c64758dec007208e56af933fc3f52044ee"
GTEST_FILE="gtest-1.14.0_p20220421.tar.gz"
DESCRIPTION="High Performance Composable Kernel for AMD GPUs"
HOMEPAGE="https://github.com/ROCm/composable_kernel"
SRC_URI="https://github.com/ROCm/composable_kernel/archive/rocm-${PV}.tar.gz -> ${P}.tar.gz
test? ( https://github.com/google/googletest/archive/${GTEST_COMMIT}.tar.gz -> ${GTEST_FILE} )"
S="${WORKDIR}/composable_kernel-rocm-${PV}"
LICENSE="MIT"
SLOT="0/$(ver_cut 1-2)"
KEYWORDS="~amd64"
IUSE="debug profiler test"
REQUIRED_USE="${ROCM_REQUIRED_USE} ${PYTHON_REQUIRED_USE}"
RESTRICT="!test? ( test )"
RDEPEND="
dev-util/hip:${SLOT}
${PYTHON_DEPS}
"
DEPEND="${RDEPEND}"
BDEPEND="
dev-build/rocm-cmake
"
PATCHES=(
"${FILESDIR}"/${PN}-6.1.1-no-git-no-hash.patch
"${FILESDIR}"/${PN}-6.3.0-conditional-kernels.patch
"${FILESDIR}"/${PN}-7.0.1-conditional-ckprofiler.patch
"${FILESDIR}"/${PN}-7.0.1-libcxx-includes.patch
"${FILESDIR}"/${PN}-7.1.0-expand-isa.patch
)
ck_check-reqs() {
[[ ${MERGE_TYPE} == binary ]] && return
targets=($AMDGPU_TARGETS)
if [[ ${#targets[@]} -gt 1 ]]; then
ewarn "composable-kernel will be compiled for multiple GPU architectures,"
ewarn "which will take a significant amount of time."
ewarn "Please consider setting AMDGPU_TARGETS USE_EXPAND variable to a single architecture."
fi
# It takes ~3GB of RAM per build thread
local user_jobs=$(makeopts_jobs)
local available_memory_mb=$(free -m | awk '/Mem:/ {print $7}')
local max_jobs=$(( available_memory_mb / 2048 ))
max_jobs=$(( max_jobs < 1 ? 1 : max_jobs ))
local limited_jobs=$(( user_jobs < max_jobs ? user_jobs : max_jobs ))
if [[ "${max_jobs}" -lt "${user_jobs}" ]]; then
ewarn "${available_memory_mb} MB of free RAM is not enough for ${user_jobs} parallel build jobs (~2Gb per job)."
ewarn "Please consider setting MAKEOPTS=\"-j${limited_jobs}\" for this package."
fi
local CHECKREQS_MEMORY=$((user_jobs*3072))M
check-reqs_${EBUILD_PHASE_FUNC}
}
pkg_pretend() {
ck_check-reqs
}
pkg_setup() {
ck_check-reqs
}
src_prepare() {
sed -e '/-Werror/d' -i cmake/EnableCompilerWarnings.cmake || die
# don't build examples
sed -e "/add_subdirectory(example)/d" -i CMakeLists.txt || die
# Flag -amdgpu-early-inline-all explodes memory consumption
# https://github.com/llvm/llvm-project/issues/86332
sed -e "/-amdgpu-early-inline-all/d" -e "/-amdgpu-function-calls/d" -i CMakeLists.txt || die
cmake_src_prepare
}
src_configure() {
rocm_use_hipcc
if ! use debug; then
append-cflags "-DNDEBUG"
append-cxxflags "-DNDEBUG"
CMAKE_BUILD_TYPE="Release"
else
CMAKE_BUILD_TYPE="Debug"
fi
local mycmakeargs=(
-DCMAKE_SKIP_RPATH=ON
-DBUILD_DEV=OFF
-DGPU_TARGETS="$(get_amdgpu_flags)"
-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr"
-DBUILD_TESTING=$(usex test ON OFF)
-DCK_USE_PROFILER=$(usex profiler ON OFF)
-Wno-dev
)
# Since 6.4.1 "fallback" DL kernels should be enabled manually...
if use amdgpu_targets_gfx1010 || use amdgpu_targets_gfx1011 || use amdgpu_targets_gfx1012 \
|| use amdgpu_targets_gfx1030 || use amdgpu_targets_gfx1031 ; then
mycmakeargs+=(-DDL_KERNELS=ON)
fi
if use test; then
mycmakeargs+=(
-DFETCHCONTENT_SOURCE_DIR_GTEST="${WORKDIR}/googletest-${GTEST_COMMIT}"
)
fi
# rocminfo call during configuration; should not happen
# Bug: https://github.com/ROCm/composable_kernel/issues/2994
rocm_add_sandbox -w
addpredict /dev/random
cmake_src_configure
}
src_install() {
cmake_src_install
# shellcheck disable=SC2329
installation() {
python_domodule python/ck4inductor
# install package-data manually, as there is no PEP517 compliance
shopt -s globstar
package_data=(
include/ck/**/*.hpp
library/src/tensor_operation_instance/gpu/gemm_universal/**/*.hpp
)
shopt -u globstar
inst_path="${D}$(python_get_sitedir)/ck4inductor"
for file in "${package_data[@]}"; do
location="${inst_path}/$(dirname "$file")"
mkdir -p "${location}"
cp "${file}" "${location}"
done
}
python_foreach_impl installation
}
src_test() {
check_amdgpu
LD_LIBRARY_PATH="${BUILD_DIR}"/lib cmake_src_test -j1
}
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