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GPU CMake: Some adaptions for gpu-systems package #14336

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Merged
davidrohr merged 1 commit into from
May 29, 2025
Merged

GPU CMake: Some adaptions for gpu-systems package #14336

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20 changes: 12 additions & 8 deletions dependencies/FindO2GPU.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,7 @@ endfunction()
# Need to strip c++17 imposed by alidist defaults
STRING(REGEX REPLACE "\-std=[^ ]*" "" O2_GPU_CMAKE_CXX_FLAGS_NOSTD "${CMAKE_CXX_FLAGS}")

# ---------------------------------- Fast Math / Deterministic Mode ----------------------------------
# ================================== Fast Math / Deterministic Mode ==================================
# set(GPUCA_DETERMINISTIC_MODE WHOLEO2) # Override
set(GPUCA_DETERMINISTIC_MODE_MAP_OFF 0)
set(GPUCA_DETERMINISTIC_MODE_MAP_NO_FAST_MATH 1) # No -ffast-math and similar compile flags for GPU folder
Expand Down Expand Up @@ -101,7 +101,7 @@ if(GPUCA_DETERMINISTIC_MODE GREATER_EQUAL ${GPUCA_DETERMINISTIC_MODE_MAP_WHOLEO2
endif()


# ---------------------------------- CUDA ----------------------------------
# ================================== CUDA ==================================
if(ENABLE_CUDA)
if(CUDA_COMPUTETARGET)
set(CMAKE_CUDA_ARCHITECTURES ${CUDA_COMPUTETARGET})
Expand Down Expand Up @@ -180,17 +180,19 @@ if(ENABLE_CUDA)
endif()
endif()

# ---------------------------------- OpenCL ----------------------------------
# ================================== OpenCL ==================================
if(ENABLE_OPENCL)
find_package(OpenCL)
if(ENABLE_OPENCL AND NOT ENABLE_OPENCL STREQUAL "AUTO")
set_package_properties(OpenCL PROPERTIES TYPE REQUIRED)
else()
set_package_properties(OpenCL PROPERTIES TYPE OPTIONAL)
endif()
find_package(LLVM)
if(LLVM_FOUND)
find_package(Clang)
if(NOT OPENCL_COMPATIBLE_CLANG_FOUND)
find_package(LLVM)
if(LLVM_FOUND)
find_package(Clang)
endif()
endif()
if (GPUCA_OPENCL_CLANGBIN)
set(LLVM_CLANG ${GPUCA_OPENCL_CLANGBIN})
Expand Down Expand Up @@ -225,7 +227,7 @@ if(ENABLE_OPENCL)
endif()
endif()

# ---------------------------------- HIP ----------------------------------
# ================================== HIP ==================================
if(ENABLE_HIP)
if(HIP_AMDGPUTARGET)
set(CMAKE_HIP_ARCHITECTURES "${HIP_AMDGPUTARGET}")
Expand Down Expand Up @@ -329,4 +331,6 @@ endif()

# if we end up here without a FATAL, it means we have found the "O2GPU" package
set(O2GPU_FOUND TRUE)
include("${CMAKE_CURRENT_LIST_DIR}/../GPU/GPUTracking/cmake/kernel_helpers.cmake")
if (NOT GPUCA_FINDO2GPU_CHECK_ONLY)
include("${CMAKE_CURRENT_LIST_DIR}/../GPU/GPUTracking/cmake/kernel_helpers.cmake")
endif()