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Switch -O3 to -O2 on Linux with Cuda 10
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@ -306,6 +306,14 @@ if(VTKm_ENABLE_KOKKOS AND NOT TARGET vtkm::kokkos)
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cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
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enable_language(CUDA)
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if(CMAKE_SYSTEM_NAME STREQUAL "Linux" AND
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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
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CMAKE_BUILD_TYPE STREQUAL "Release")
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message(WARNING "There is a known issue with Cuda 10 and -O3 optimization. Switching to -O2. Please refer to issue #555.")
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string(REPLACE "-O3" "-O2" CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
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string(REPLACE "-O3" "-O2" CMAKE_CUDA_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
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endif()
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string(REGEX MATCH "[0-9][0-9]$" cuda_arch ${Kokkos_ARCH})
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set(CMAKE_CUDA_ARCHITECTURES ${cuda_arch})
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message(STATUS "Detected Cuda arch from Kokkos: ${cuda_arch}")
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