+#
+# This file is part of the GROMACS molecular simulation package.
+#
+# Copyright (c) 2012,2013,2014, 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.
+#
+# GROMACS is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# as published by the Free Software Foundation; either version 2.1
+# of the License, or (at your option) any later version.
+#
+# GROMACS is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# 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,
+# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# If you want to redistribute modifications to GROMACS, please
+# consider that scientific software is very special. Version
+# control is crucial - bugs must be traceable. We will be happy to
+# 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.
+#
+# To help us fund GROMACS development, we humbly ask that you cite
+# the research papers on the package. Check out http://www.gromacs.org.
+
# Manage CUDA nvcc compilation configuration, try to be smart to ease the users'
# pain as much as possible:
-# - use the CUDA_NVCC_HOST_COMPILER if defined by the user, otherwise
+# - use the CUDA_HOST_COMPILER if defined by the user, otherwise
# - auto-detect compatible nvcc host compiler and set nvcc -ccbin (if not MPI wrapper)
# - set icc compatibility mode to gcc 4.4/4.5 (CUDA 4.0 is not compatible with gcc >v4.4)
# - (advanced) variables set:
-# * CUDA_NVCC_HOST_COMPILER - the compiler nvcc is forced to use (via -ccbin)
-# * CUDA_NVCC_HOST_COMPILER_OPTIONS - the full host-compiler related option list passed to nvcc
+# * CUDA_HOST_COMPILER - the host compiler for nvcc (only with cmake <2.8.10)
+# * CUDA_HOST_COMPILER_OPTIONS - the full host-compiler related option list passed to nvcc
+#
+# Note that from CMake 2.8.10 FindCUDA defines CUDA_HOST_COMPILER internally,
+# so we won't set it ourselves, but hope that the module does a good job.
+
if (NOT DEFINED CUDA_NVCC_FLAGS_SET)
set(CUDA_NVCC_FLAGS_SET TRUE CACHE INTERNAL "True if NVCC flags have been set" FORCE)
# Also note that with MSVC nvcc sets the -compiler-bindir option behind the
# scenes; to avoid conflicts we don't set -ccbin automatically.
- if (NOT DEFINED CUDA_NVCC_HOST_COMPILER AND NOT MSVC)
+ if (NOT DEFINED CUDA_HOST_COMPILER AND NOT MSVC)
if (NOT CMAKE_COMPILER_IS_GNUCC AND
NOT (CMAKE_C_COMPILER_ID MATCHES "Intel" AND UNIX AND NOT APPLE))
message(WARNING "
Will not set the nvcc host compiler because the current C compiler is not
compatible with nvcc:
${CMAKE_C_COMPILER} (ID: ${CMAKE_C_COMPILER_ID})
- Compatible compilers are: gcc on Linux and Mac OS X, the Intel Compiler on
- 64-bit Linux and MSVC on Windows. If nothing specified, nvcc will automatically
- pick the platform-default compiler; However, as mixing compilers can cause errors.
+ Compatible compilers are: gcc on Linux and Mac OS X, the Intel Compiler on 64-bit
+ Linux and MSVC on Windows. Note that with newer CUDA releases this might change,
+ for up-to-date compatibility information check the NVIDIA documentation.
+ If nothing specified, nvcc will automatically pick the platform-default compiler;
+ Note that mixing compilers can cause errors.
To manually set the nvcc host compiler, edit CUDA_NVCC_FLAGS or re-configure
- setting CUDA_NVCC_HOST_COMPILER to the full path of a compatible compiler.
+ setting CUDA_HOST_COMPILER to the full path of a compatible compiler.
")
else()
# do not use MPI compiler wrappers, as these are prone to brake nvcc
but the safest is to use the C compiler that the MPI compiler wrapper uses
(if this is compatible).
To manually set the nvcc host compiler, edit CUDA_NVCC_FLAGS or re-configure
- setting CUDA_NVCC_HOST_COMPILER to the full path of a compatible compiler.
+ setting CUDA_HOST_COMPILER to the full path of a compatible compiler.
")
else()
- set(CUDA_NVCC_HOST_COMPILER "${CMAKE_C_COMPILER}")
- set(CUDA_NVCC_HOST_COMPILER_AUTOSET TRUE CACHE INTERNAL
- "True if CUDA_NVCC_HOST_COMPILER is automatically set" FORCE)
+ set(CUDA_HOST_COMPILER "${CMAKE_C_COMPILER}")
+ set(CUDA_HOST_COMPILER_AUTOSET TRUE CACHE INTERNAL
+ "True if CUDA_HOST_COMPILER is automatically set" FORCE)
endif()
endif()
endif()
- if(DEFINED CUDA_NVCC_HOST_COMPILER)
- message(STATUS "Setting the nvcc host compiler to: ${CUDA_NVCC_HOST_COMPILER}")
- set(CUDA_NVCC_HOST_COMPILER ${CUDA_NVCC_HOST_COMPILER}
- CACHE PATH "Host compiler for nvcc (do not edit!)" FORCE)
+ if(DEFINED CUDA_HOST_COMPILER)
+ # FindCUDA in CMake 2.8.10 sets the host compiler internally
+ if (CMAKE_VERSION VERSION_LESS "2.8.10")
+ message(STATUS "Setting the nvcc host compiler to: ${CUDA_HOST_COMPILER}")
+ set(CUDA_HOST_COMPILER ${CUDA_HOST_COMPILER}
+ CACHE PATH "Host compiler for nvcc (do not edit!)" FORCE)
+ set(_HOST_COMPILER_OPTION_STRING "-ccbin=${CUDA_HOST_COMPILER};")
+ endif()
- set(CUDA_NVCC_HOST_COMPILER_OPTIONS "-ccbin=${CUDA_NVCC_HOST_COMPILER}")
- # On *nix force icc in gcc 4.4 compatibility with CUDA 3.2/4.0 and
+ # On *nix force icc in gcc 4.4 compatibility mode with CUDA 3.2/4.0 and
# gcc 4.5 compatibility mode with later CUDA versions. This is needed
- # as even with icc use as host compiler, when icc's gcc compatibility
+ # as even with icc used as host compiler, when icc's gcc compatibility
# mode is higher than the max gcc version officially supported by CUDA,
# nvcc will freak out.
if (UNIX AND CMAKE_C_COMPILER_ID MATCHES "Intel" AND
- CUDA_NVCC_HOST_COMPILER_AUTOSET)
+ CUDA_HOST_COMPILER_AUTOSET)
if (CUDA_VERSION VERSION_LESS "4.1")
message(STATUS "Setting Intel Compiler compatibity mode to gcc 4.4 for nvcc host compilation")
- set(CUDA_NVCC_HOST_COMPILER_OPTIONS "${CUDA_NVCC_HOST_COMPILER_OPTIONS};-Xcompiler;-gcc-version=440;")
+ set(CUDA_HOST_COMPILER_OPTIONS "${CUDA_HOST_COMPILER_OPTIONS};-Xcompiler;-gcc-version=440;")
else()
message(STATUS "Setting Intel Compiler compatibity mode to gcc 4.5 for nvcc host compilation")
- set(CUDA_NVCC_HOST_COMPILER_OPTIONS "${CUDA_NVCC_HOST_COMPILER_OPTIONS};-Xcompiler;-gcc-version=450;")
+ set(CUDA_HOST_COMPILER_OPTIONS "${CUDA_HOST_COMPILER_OPTIONS};-Xcompiler;-gcc-version=450;")
endif()
endif()
- set(CUDA_NVCC_HOST_COMPILER_OPTIONS "${CUDA_NVCC_HOST_COMPILER_OPTIONS}"
- CACHE STRING "Host-side compiler and options for it (do not edit!)." FORCE)
+ set(CUDA_HOST_COMPILER_OPTIONS "${CUDA_HOST_COMPILER_OPTIONS}"
+ CACHE STRING "Options for nvcc host compiler (do not edit!)." FORCE)
- mark_as_advanced(CUDA_NVCC_HOST_COMPILER CUDA_NVCC_HOST_COMPILER_OPTIONS)
+ mark_as_advanced(CUDA_HOST_COMPILER CUDA_HOST_COMPILER_OPTIONS)
endif()
- # on Linux we need to add -fPIC when building shared gmx libs
- # Note: will add -fPIC for any compiler that supports it as it shouldn't hurt
- if(BUILD_SHARED_LIBS)
- GMX_TEST_CXXFLAG(CXXFLAG_FPIC "-fPIC" _FPIC_NVCC_FLAG)
- if(_FPIC_NVCC_FLAG)
- set(_FPIC_NVCC_FLAG "-Xcompiler;${_FPIC_NVCC_FLAG}")
- endif()
+ if(APPLE AND CMAKE_C_COMPILER_ID MATCHES "GNU")
+ # Some versions of gcc-4.8 and gcc-4.9 produce errors (in particular on OS X)
+ # if we do not use -D__STRICT_ANSI__. It is harmless, so we might as well add it for all versions.
+ set(CUDA_HOST_COMPILER_OPTIONS "${CUDA_HOST_COMPILER_OPTIONS}-D__STRICT_ANSI__;")
+ endif()
+
+ # the legacy CUDA kernels have been dropped, warn with CUDA 4.0
+ if (CUDA_VERSION VERSION_EQUAL "4.0")
+ message(WARNING "The legacy GPU kernels optimized for older CUDA compilers, including the detected version 4.0, have been removed. To avoid performance loss, we strongly recommend upgrading to a newer CUDA toolkit.
+ ")
endif()
# Set the CUDA GPU architectures to compile for:
# - with CUDA >v4.2 compute capability 2.0, 2.1 is, but 3.0 is not supported:
# => compile sm_20, sm_21 cubin, and compute_20 PTX
- # - with CUDA >=4.2 compute capabity <=3.0 is supported:
+ # - with CUDA >=4.2 compute capability <=3.0 is supported:
# => compile sm_20, sm_21, sm_30 cubin, and compute_30 PTX
- # - with CUDA 5.0 compute capabity 3.5 is supported, but generating code
- # optimized for sm_35 results in lower performance than with sm_30.
+ # - with CUDA 5.0 and later compute capability 3.5 is supported
+ # => compile sm_20, sm_21, sm_30, sm_35 cubin, and compute_35 PTX
if(CUDA_VERSION VERSION_LESS "4.2")
set(_CUDA_ARCH_STR "-gencode;arch=compute_20,code=sm_20;-gencode;arch=compute_20,code=sm_21;-gencode;arch=compute_20,code=compute_20")
- else()
+ elseif(CUDA_VERSION VERSION_LESS "5.0")
set(_CUDA_ARCH_STR "-gencode;arch=compute_20,code=sm_20;-gencode;arch=compute_20,code=sm_21;-gencode;arch=compute_30,code=sm_30;-gencode;arch=compute_30,code=compute_30")
+ else()
+ set(_CUDA_ARCH_STR "-gencode;arch=compute_20,code=sm_20;-gencode;arch=compute_20,code=sm_21;-gencode;arch=compute_30,code=sm_30;-gencode;arch=compute_35,code=sm_35;-gencode;arch=compute_35,code=compute_35")
endif()
# finally set the damn flags
set(CUDA_NVCC_FLAGS
- "${_CUDA_ARCH_STR};-use_fast_math;${CUDA_NVCC_HOST_COMPILER_OPTIONS};${_FPIC_NVCC_FLAG}"
+ "${_CUDA_ARCH_STR};-use_fast_math;${_HOST_COMPILER_OPTION_STRING}${CUDA_HOST_COMPILER_OPTIONS}"
CACHE STRING "Compiler flags for nvcc." FORCE)
endif()
-
-
-# Try to execute ${CUDA_NVCC_EXECUTABLE} --version and set the output
-# (or an error string) in the argument variable.
-#
-# returned in argument: CUDA nvcc compiler version string
-#
-macro(get_nvcc_version_info)
- if(CUDA_NVCC_EXECUTABLE AND NOT CUDA_NVCC_COMPILER_INFO)
-
- # Get the nvcc version string. This is multi-line, but since it is only 4 lines
- # and might change in the future it is better to store than trying to parse out
- # the version from the current format.
- execute_process(COMMAND ${CUDA_NVCC_EXECUTABLE} --version
- RESULT_VARIABLE _nvcc_version_res
- OUTPUT_VARIABLE _nvcc_version_out
- ERROR_VARIABLE _nvcc_version_err
- OUTPUT_STRIP_TRAILING_WHITESPACE)
- if (${_nvcc_version_res} EQUAL 0)
- # Fix multi-line mess: Replace newline with ";" so we can use it in a define
- string(REPLACE "\n" ";" _nvcc_info_singleline ${_nvcc_version_out})
- SET(CUDA_NVCC_COMPILER_INFO ${_nvcc_info_singleline}
- CACHE STRING "CUDA nvcc compiler version string" FORCE)
- else ()
- SET(CUDA_NVCC_COMPILER_INFO ""
- CACHE STRING "CUDA nvcc compiler version string not available" FORCE)
- endif ()
- endif ()
- mark_as_advanced(CUDA_NVCC_COMPILER_INFO)
-endmacro ()
biod.pnpi.spb.ru / alexxy / gromacs.git / blobdiff