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Workaround CUDA 12.9 / CMake 3.30: Ignore SM 10.0+ #4589

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merged 1 commit into from
Jul 30, 2025
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Workaround CUDA 12.9 / CMake 3.30: Ignore SM 10.0+ #4589

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11 changes: 9 additions & 2 deletions Tools/CMake/AMReXUtils.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -222,15 +222,22 @@ endfunction ()
function (convert_cuda_archs _cuda_archs)

foreach (_item IN LISTS ${_cuda_archs})
# remove -real suffixes
string(REGEX REPLACE "\\-real$" "" _item "${_item}")

string(REGEX MATCH "\\." _has_decimal "${_item}")
string(REGEX MATCH "[0-9]+" _is_number "${_item}")

if (NOT _has_decimal AND _is_number)
math(EXPR _int "${_item}/10" OUTPUT_FORMAT DECIMAL)
math(EXPR _mod "${_item}%10" OUTPUT_FORMAT DECIMAL)
list(APPEND _tmp "${_int}.${_mod}")
if(_int LESS 10) # CMake 3.30 does not support SM 10.0+ in cuda_select_nvcc_arch_flags
list(APPEND _tmp "${_int}.${_mod}")
endif()
else ()
list(APPEND _tmp ${_item})
if(_item LESS 10) # CMake 3.30 does not support SM 10.0+ in cuda_select_nvcc_arch_flags
list(APPEND _tmp ${_item})
endif()
endif()
endforeach ()

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