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Switch -O3 to -O2 on Linux with Cuda 10

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Sujin Philip 2020-08-07 15:01:57 -05:00 committed by Robert Maynard
parent db57ed26a2
commit b2f4c8e5ef
1 changed files with 8 additions and 0 deletions
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8
CMake/VTKmDeviceAdapters.cmake
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@ -306,6 +306,14 @@ if(VTKm_ENABLE_KOKKOS AND NOT TARGET vtkm::kokkos)
cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
enable_language(CUDA)
if(CMAKE_SYSTEM_NAME STREQUAL "Linux" AND
CMAKE_CUDA_COMPILER_ID STREQUAL "NVIDIA" AND CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL "10.0" AND CMAKE_CUDA_COMPILER_VERSION VERSION_LESS "11.0" AND
CMAKE_BUILD_TYPE STREQUAL "Release")
message(WARNING "There is a known issue with Cuda 10 and -O3 optimization. Switching to -O2. Please refer to issue #555.")
string(REPLACE "-O3" "-O2" CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
string(REPLACE "-O3" "-O2" CMAKE_CUDA_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
endif()
string(REGEX MATCH "[0-9][0-9]$" cuda_arch ${Kokkos_ARCH})
set(CMAKE_CUDA_ARCHITECTURES ${cuda_arch})
message(STATUS "Detected Cuda arch from Kokkos: ${cuda_arch}")