--- gromacs-2021.7/cmake/gmxManageNvccConfig.cmake 2023-01-31 12:45:45.000000000 +0100 +++ gromacs-2022.5/cmake/gmxManageNvccConfig.cmake 2023-02-03 12:53:34.000000000 +0100 @@ -1,11 +1,9 @@ # # This file is part of the GROMACS molecular simulation package. # -# Copyright (c) 2012,2013,2014,2015,2016 by the GROMACS development team. -# Copyright (c) 2017,2018,2019,2020,2021, by the GROMACS development team, led by -# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl, -# and including many others, as listed in the AUTHORS file in the -# top-level source directory and at http://www.gromacs.org. +# Copyright 2012- The GROMACS Authors +# and the project initiators Erik Lindahl, Berk Hess and David van der Spoel. +# Consult the AUTHORS/COPYING files and https://www.gromacs.org for details. # # GROMACS is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public License @@ -19,7 +17,7 @@ # # You should have received a copy of the GNU Lesser General Public # License along with GROMACS; if not, see -# http://www.gnu.org/licenses, or write to the Free Software Foundation, +# https://www.gnu.org/licenses, or write to the Free Software Foundation, # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. # # If you want to redistribute modifications to GROMACS, please @@ -28,10 +26,10 @@ # consider code for inclusion in the official distribution, but # derived work must not be called official GROMACS. Details are found # in the README & COPYING files - if they are missing, get the -# official version at http://www.gromacs.org. +# official version at https://www.gromacs.org. # # To help us fund GROMACS development, we humbly ask that you cite -# the research papers on the package. Check out http://www.gromacs.org. +# the research papers on the package. Check out https://www.gromacs.org. # Manage CUDA nvcc compilation configuration, try to be smart to ease the users' # pain as much as possible: @@ -51,7 +49,7 @@ # glibc source shows that _FORCE_INLINES is only used in this string.h # feature and performance of memcpy variants is unimportant for CUDA # code in GROMACS. So this workaround is good enough to keep problems -# away from users installing GROMACS. See Issue #1942. +# away from users installing GROMACS. See Issue #1982. function(work_around_glibc_2_23) try_compile(IS_GLIBC_2_23_OR_HIGHER ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/cmake/TestGlibcVersion.cpp) if(IS_GLIBC_2_23_OR_HIGHER) @@ -83,67 +81,158 @@ mark_as_advanced(CUDA_HOST_COMPILER CUDA_HOST_COMPILER_OPTIONS) endif() +# We would like to be helpful and reject the host compiler with a +# clear error message at configure time, rather than let nvcc +# later reject the host compiler as not supported when the first +# CUDA source file is built. We've implemented that for current +# nvcc running on Unix-like systems, but e.g. changes to nvcc +# will further affect the limited portability of this checking +# code. Set the CMake variable GMX_NVCC_WORKS on if you want to +# bypass this check. +if((_cuda_nvcc_executable_or_flags_changed OR CUDA_HOST_COMPILER_CHANGED OR NOT GMX_NVCC_WORKS) AND NOT WIN32) + message(STATUS "Check for working NVCC/C++ compiler combination with nvcc '${CUDA_NVCC_EXECUTABLE}'") + execute_process(COMMAND ${CUDA_NVCC_EXECUTABLE} --compiler-bindir=${CUDA_HOST_COMPILER} -c ${CUDA_NVCC_FLAGS} ${CUDA_NVCC_FLAGS_${_build_type}} ${CMAKE_SOURCE_DIR}/cmake/TestCUDA.cu + RESULT_VARIABLE _cuda_test_res + OUTPUT_VARIABLE _cuda_test_out + ERROR_VARIABLE _cuda_test_err + OUTPUT_STRIP_TRAILING_WHITESPACE) + + if(${_cuda_test_res}) + message(STATUS "Check for working NVCC/C compiler combination - broken") + message(STATUS "${CUDA_NVCC_EXECUTABLE} standard output: '${_cuda_test_out}'") + message(STATUS "${CUDA_NVCC_EXECUTABLE} standard error: '${_cuda_test_err}'") + if(${_cuda_test_err} MATCHES "nsupported") + message(FATAL_ERROR "NVCC/C++ compiler combination does not seem to be supported. CUDA frequently does not support the latest versions of the host compiler, so you might want to try an earlier C++ compiler version and make sure your CUDA compiler and driver are as recent as possible. Set the GMX_NVCC_WORKS CMake cache variable to bypass this check if you know what you are doing.") + elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 11.2 AND CUDA_VERSION VERSION_GREATER 11.4 AND CUDA_VERSION VERSION_LESS 11.7) # Issue #4574, #4641 + # Above, we should be checking for VERSION_LESS 11.6.2, but CUDA_VERSION is only "major.minor" + message(FATAL_ERROR "CUDA versions 11.5-11.6.1 are known to be incompatible with some GCC 11.x. Use a different GCC or update your CUDA installation to at least CUDA 11.6.2") + else() + message(FATAL_ERROR "CUDA compiler does not seem to be functional or is not compatible with the host compiler. Set the GMX_NVCC_WORKS CMake cache variable to bypass this check if you know what you are doing.") + endif() + elseif(NOT GMX_CUDA_TEST_COMPILER_QUIETLY) + message(STATUS "Check for working NVCC/C++ compiler combination - works") + set(GMX_NVCC_WORKS TRUE CACHE INTERNAL "Nvcc can compile a trivial test program") + endif() +endif() # GMX_CHECK_NVCC + +# Tests a single flag to use with nvcc. +# +# If the flags are accepted, they are appended to the variable named +# in the first argument. The cache variable named in the second +# argument is used to avoid rerunning the check in future invocations +# of cmake. The list of flags to check follows these two required +# arguments. +# +# Note that a space-separated string of flags, or a flag-value pair +# separated by spaces will not work. Use the single-argument forms +# accepted by nvcc, like "--arg=value". +# +# As this code is not yet tested on Windows, it always accepts the +# flags in that case. +function(gmx_add_nvcc_flag_if_supported _output_variable_name_to_append_to _flags_cache_variable_name) + # If the check has already been run, do not re-run it + if (NOT ${_flags_cache_variable_name} AND NOT WIN32) + message(STATUS "Checking if nvcc accepts flags ${ARGN}") + # See detailed comment about gcc 7 below + if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8) + set(_cache_variable_value TRUE) + message(STATUS "Checking if nvcc accepts flags ${ARGN} - Assuming success when using gcc 7") + else() + if(NOT(CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 11)) + set(CCBIN "--compiler-bindir=${CUDA_HOST_COMPILER}") + endif() + execute_process( + COMMAND ${CUDA_NVCC_EXECUTABLE} ${ARGN} ${CCBIN} "${CMAKE_SOURCE_DIR}/cmake/TestCUDA.cu" + RESULT_VARIABLE _cuda_success + OUTPUT_QUIET + ERROR_QUIET + ) + # Convert the success value to a boolean and report status + if (_cuda_success EQUAL 0) + set(_cache_variable_value TRUE) + message(STATUS "Checking if nvcc accepts flags ${ARGN} - Success") + else() + set(_cache_variable_value FALSE) + message(STATUS "Checking if nvcc accepts flags ${ARGN} - Failed") + endif() + endif() + set(${_flags_cache_variable_name} ${_cache_variable_value} CACHE BOOL "Whether NVCC supports flag(s) ${ARGN}") + endif() + # Append the flags to the output variable if they have been tested to work + if (${_flags_cache_variable_name} OR WIN32) + list(APPEND ${_output_variable_name_to_append_to} ${ARGN}) + set(${_output_variable_name_to_append_to} ${${_output_variable_name_to_append_to}} PARENT_SCOPE) + endif() +endfunction() + +# Versions of gcc 7 have differing behavior when executing +# +# nvcc $args --compiler-bindir=gcc TestCUDA.cu +# +# and would need e.g. adding -lstdc++ to the command line so that +# linking of a C++/CUDA object by the C-compiler flavor of gcc works. +# This means we can't reliably test compiler flags in this case +# without risking creating other problems. Instead we assume (above) +# that all compiler flags will work, and issue this warning. +# We also want to skip this warning during GROMACS CI testing. +if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8 + AND NOT DEFINED ENV{GITLAB_CI}) + message(WARNING "You are using gcc version 7 with the CUDA compiler nvcc. GROMACS cannot reliably test compiler arguments for this combination, so if you later experience errors in building GROMACS, please use a more recent version of gcc.") +endif() + # If any of these manual override variables for target CUDA GPU architectures # or virtual architecture is set, parse the values and assemble the nvcc # command line for these. Otherwise use our defaults. # Note that the manual override variables require a semicolon separating # architecture codes. +set(GMX_CUDA_NVCC_GENCODE_FLAGS) if (GMX_CUDA_TARGET_SM OR GMX_CUDA_TARGET_COMPUTE) - set(GMX_CUDA_NVCC_GENCODE_FLAGS) set(_target_sm_list ${GMX_CUDA_TARGET_SM}) foreach(_target ${_target_sm_list}) - list(APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_${_target},code=sm_${_target}") + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_${_target} "--generate-code=arch=compute_${_target},code=sm_${_target}") + if (NOT NVCC_HAS_GENCODE_COMPUTE_AND_SM_${_target} AND NOT WIN32) + message(FATAL_ERROR "Your choice of ${_target} in GMX_CUDA_TARGET_SM was not accepted by nvcc, please choose a target that it accepts") + endif() endforeach() set(_target_compute_list ${GMX_CUDA_TARGET_COMPUTE}) foreach(_target ${_target_compute_list}) - list(APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_${_target},code=compute_${_target}") + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_${_target} --generate-code=arch=compute_${_target},code=compute_${_target}) + if (NOT NVCC_HAS_GENCODE_COMPUTE_${_target} AND NOT WIN32) + message(FATAL_ERROR "Your choice of ${_target} in GMX_CUDA_TARGET_COMPUTE was not accepted by nvcc, please choose a target that it accepts") + endif() endforeach() else() # Set the CUDA GPU architectures to compile for: - # - with CUDA >=9.0 CC 7.0 is supported and CC 2.0 is no longer supported - # => compile sm_30, sm_35, sm_37, sm_50, sm_52, sm_60, sm_61, sm_70 SASS, and compute_35, compute_70 PTX - # - with CUDA >=10.0 CC 7.5 is supported - # => compile sm_30, sm_35, sm_37, sm_50, sm_52, sm_60, sm_61, sm_70, sm_75 SASS, and compute_35, compute_75 PTX # - with CUDA >=11.0 CC 8.0 is supported # => compile sm_35, sm_37, sm_50, sm_52, sm_60, sm_61, sm_70, sm_75, sm_80 SASS, and compute_35, compute_80 PTX # First add flags that trigger SASS (binary) code generation for physical arch - if(CUDA_VERSION VERSION_LESS "11.0") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_30,code=sm_30") - endif() - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_35,code=sm_35") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_37,code=sm_37") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_50,code=sm_50") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_52,code=sm_52") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_60,code=sm_60") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_61,code=sm_61") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_70,code=sm_70") - if(NOT CUDA_VERSION VERSION_LESS "10.0") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_75,code=sm_75") - endif() - if(NOT CUDA_VERSION VERSION_LESS "11.0") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_80,code=sm_80") - # Requesting sm or compute 35, 37, or 50 triggers deprecation messages with - # nvcc 11.0, which we need to suppress for use in CI - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-Wno-deprecated-gpu-targets") - endif() - if(NOT CUDA_VERSION VERSION_LESS "11.1") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_86,code=sm_86") + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_35 --generate-code=arch=compute_35,code=sm_35) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_37 --generate-code=arch=compute_37,code=sm_37) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_50 --generate-code=arch=compute_50,code=sm_50) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_52 --generate-code=arch=compute_52,code=sm_52) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_60 --generate-code=arch=compute_60,code=sm_60) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_61 --generate-code=arch=compute_61,code=sm_61) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_70 --generate-code=arch=compute_70,code=sm_70) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_75 --generate-code=arch=compute_75,code=sm_75) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_80 --generate-code=arch=compute_80,code=sm_80) + # Don't attempt to add newest architectures with old GNU compiler, to avoid issues in CI + # related to being unable to test which flags are supported + if (NOT (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8)) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_86 --generate-code=arch=compute_86,code=sm_86) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_89 --generate-code=arch=compute_89,code=sm_89) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_AND_SM_90 --generate-code=arch=compute_90,code=sm_90) endif() + # Requesting sm or compute 35, 37, or 50 triggers deprecation messages with + # nvcc 11.0, which we need to suppress for use in CI + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_WARNING_NO_DEPRECATED_GPU_TARGETS -Wno-deprecated-gpu-targets) # Next add flags that trigger PTX code generation for the # newest supported virtual arch that's useful to JIT to future architectures # as well as an older one suitable for JIT-ing to any rare intermediate arch # (like that of Jetson / Drive PX devices) - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_35,code=compute_35") - if(CUDA_VERSION VERSION_LESS "11.0") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_32,code=compute_32") - else() - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_53,code=compute_53") - endif() - if(NOT CUDA_VERSION VERSION_LESS "11.0") - list (APPEND GMX_CUDA_NVCC_GENCODE_FLAGS "-gencode;arch=compute_80,code=compute_80") - endif() + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_53 --generate-code=arch=compute_53,code=sm_53) + gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_GENCODE_FLAGS NVCC_HAS_GENCODE_COMPUTE_80 --generate-code=arch=compute_80,code=sm_80) endif() if (GMX_CUDA_TARGET_SM) @@ -158,27 +247,20 @@ # FindCUDA.cmake is unaware of the mechanism used by cmake to embed # the compiler flag for the required C++ standard in the generated # build files, so we have to pass it ourselves -if (CUDA_VERSION VERSION_LESS 11.0) - # CUDA doesn't formally support C++17 until version 11.0, so for - # now host-side code that compiles with CUDA is restricted to - # C++14. This needs to be expressed formally for older CUDA - # version. + +# gcc-7 pre-dated C++17, so uses the -std=c++1z compiler flag for it, +# which modern nvcc does not recognize. So we work around that by +# compiling in C++14 mode. Clang doesn't have this problem because nvcc +# only supports version of clang that already understood -std=c++17 +if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8) list(APPEND GMX_CUDA_NVCC_FLAGS "${CMAKE_CXX14_STANDARD_COMPILE_OPTION}") else() - # gcc-7 pre-dated C++17, so uses the -std=c++1z compiler flag for it, - # which modern nvcc does not recognize. So we work around that by - # compiling in C++14 mode. Clang doesn't have this problem because nvcc - # only supports version of clang that already understood -std=c++17 - if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8) - list(APPEND GMX_CUDA_NVCC_FLAGS "${CMAKE_CXX14_STANDARD_COMPILE_OPTION}") - else() - list(APPEND GMX_CUDA_NVCC_FLAGS "${CMAKE_CXX17_STANDARD_COMPILE_OPTION}") - endif() + list(APPEND GMX_CUDA_NVCC_FLAGS "${CMAKE_CXX17_STANDARD_COMPILE_OPTION}") endif() # assemble the CUDA flags list(APPEND GMX_CUDA_NVCC_FLAGS "${GMX_CUDA_NVCC_GENCODE_FLAGS}") -list(APPEND GMX_CUDA_NVCC_FLAGS "-use_fast_math") +gmx_add_nvcc_flag_if_supported(GMX_CUDA_NVCC_FLAGS NVCC_HAS_USE_FAST_MATH -use_fast_math) # assemble the CUDA host compiler flags list(APPEND GMX_CUDA_NVCC_FLAGS "${CUDA_HOST_COMPILER_OPTIONS}") @@ -187,12 +269,18 @@ # CUDA header cuda_runtime_api.h in at least CUDA 10.1 uses 0 # where nullptr would be preferable. GROMACS can't fix these, so # must suppress them. - GMX_TEST_CXXFLAG(CXXFLAGS_NO_ZERO_AS_NULL_POINTER_CONSTANT "-Wno-zero-as-null-pointer-constant" NVCC_CLANG_SUPPRESSIONS_CXXFLAGS) + GMX_TEST_CXXFLAG(HAS_WARNING_NO_ZERO_AS_NULL_POINTER_CONSTANT "-Wno-zero-as-null-pointer-constant" NVCC_CLANG_SUPPRESSIONS_CXXFLAGS) # CUDA header crt/math_functions.h in at least CUDA 10.x and 11.1 # used throw() specifications that are deprecated in more recent # C++ versions. GROMACS can't fix these, so must suppress them. - GMX_TEST_CXXFLAG(CXXFLAGS_NO_DEPRECATED_DYNAMIC_EXCEPTION_SPEC "-Wno-deprecated-dynamic-exception-spec" NVCC_CLANG_SUPPRESSIONS_CXXFLAGS) + GMX_TEST_CXXFLAG(HAS_WARNING_NO_DEPRECATED_DYNAMIC_EXCEPTION_SPEC "-Wno-deprecated-dynamic-exception-spec" NVCC_CLANG_SUPPRESSIONS_CXXFLAGS) + + # CUDA headers cuda_runtime.h and channel_descriptor.h in at least + # CUDA 11.0 uses many C-style casts, which are ncessary for this + # header to work for C. GROMACS can't fix these, so must suppress + # the warnings they generate + GMX_TEST_CXXFLAG(HAS_WARNING_NO_OLD_STYLE_CAST "-Wno-old-style-cast" NVCC_CLANG_SUPPRESSIONS_CXXFLAGS) # Add these flags to those used for the host compiler. The # "-Xcompiler" prefix directs nvcc to only use them for host @@ -205,37 +293,6 @@ string(TOUPPER "${CMAKE_BUILD_TYPE}" _build_type) gmx_check_if_changed(_cuda_nvcc_executable_or_flags_changed CUDA_NVCC_EXECUTABLE CUDA_NVCC_FLAGS CUDA_NVCC_FLAGS_${_build_type}) -# We would like to be helpful and reject the host compiler with a -# clear error message at configure time, rather than let nvcc -# later reject the host compiler as not supported when the first -# CUDA source file is built. We've implemented that for current -# nvcc running on Unix-like systems, but e.g. changes to nvcc -# will further affect the limited portability of this checking -# code. Set the CMake variable GMX_NVCC_WORKS on if you want to -# bypass this check. -if((_cuda_nvcc_executable_or_flags_changed OR CUDA_HOST_COMPILER_CHANGED OR NOT GMX_NVCC_WORKS) AND NOT WIN32) - message(STATUS "Check for working NVCC/C++ compiler combination with nvcc '${CUDA_NVCC_EXECUTABLE}'") - execute_process(COMMAND ${CUDA_NVCC_EXECUTABLE} -ccbin ${CUDA_HOST_COMPILER} -c ${CUDA_NVCC_FLAGS} ${CUDA_NVCC_FLAGS_${_build_type}} ${CMAKE_SOURCE_DIR}/cmake/TestCUDA.cu - RESULT_VARIABLE _cuda_test_res - OUTPUT_VARIABLE _cuda_test_out - ERROR_VARIABLE _cuda_test_err - OUTPUT_STRIP_TRAILING_WHITESPACE) - - if(${_cuda_test_res}) - message(STATUS "Check for working NVCC/C compiler combination - broken") - message(STATUS "${CUDA_NVCC_EXECUTABLE} standard output: '${_cuda_test_out}'") - message(STATUS "${CUDA_NVCC_EXECUTABLE} standard error: '${_cuda_test_err}'") - if(${_cuda_test_err} MATCHES "nsupported") - message(FATAL_ERROR "NVCC/C++ compiler combination does not seem to be supported. CUDA frequently does not support the latest versions of the host compiler, so you might want to try an earlier C++ compiler version and make sure your CUDA compiler and driver are as recent as possible.") - else() - message(FATAL_ERROR "CUDA compiler does not seem to be functional.") - endif() - elseif(NOT GMX_CUDA_TEST_COMPILER_QUIETLY) - message(STATUS "Check for working NVCC/C++ compiler combination - works") - set(GMX_NVCC_WORKS TRUE CACHE INTERNAL "Nvcc can compile a trivial test program") - endif() -endif() # GMX_CHECK_NVCC - # The flags are set as local variables which shadow the cache variables. The cache variables # (can be set by the user) are appended. This is done in a macro to set the flags when all