[CMake] FindMPI.cmake and MS-MPI

[Andrew Maclean]

Please ignore my emails regarding this. Apparently Ben Boeckel has fixed
these issues in CMake 3.2.0-rc1. Sorry for the
unnecessary bandwidth utilization!

I can confirm that the VTK master version works OK with MS-MPI.

Regards
   Andrew


On Mon, Mar 2, 2015 at 9:58 AM, Andrew Maclean <andrew.amaclean at gmail.com>
wrote:

> Some further information, ignore the CMP0054 warning it is not triggered
> when the CMake Minimum Version is 3.1
>
> When running FindMPI.cmake, I discovered that I had a spurious registry
> entry for an older version of MPI so mpiexec.exe was not being found. When
> I deleted this it found mpiexec.exe in C:/Program Files/Microsoft
> MPI/Bin/mpiexec.exe OK. I think the key
> for HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MPI should still be there
> before the other registry keys.
>
> You definitely need the new lib and include paths.
>
> I was able to use FindMPI.cmake and just add in these paths manually.
>
> Hope this helps.
>
> Regards
>    Andrew
>
>
> On Sun, Mar 1, 2015 at 3:54 PM, Andrew Maclean <andrew.amaclean at gmail.com>
> wrote:
>
>> Re-sending because David in no longer at Kitware.
>>
>> I downloaded and installed MS-MPI from
>> http://www.microsoft.com/en-us/download/details.aspx?id=44990
>>
>> This implementation does not work with FindMPI.cmake.
>>
>> The includes and libs are found in:
>> C:/Program Files (x86)/Microsoft SDKs/MPI/
>> and mpiexec.exe is in: C:/Program Files/Microsoft MPI/Bin/
>>
>> I had to do the following changes to get it working. Perhaps you would
>> like to edit FIndMPI.cmake to incorporate these changes:
>> ----------
>> # Require MPI for this project:
>> if(WIN32)
>>   #This is for finding MS-MPI.
>>   #set(_MPI_PREFIX_PATH)
>>   #list(APPEND _MPI_PREFIX_PATH
>> "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MPI;Path]/..")
>>   set(MPIEXEC "C:/Program Files/Microsoft MPI/Bin/mpiexec.exe")
>>   # For building MPI programs the selected Visual Studio compiler is
>> used, namely cl.exe.
>>   # So there is no need to set a specific MPI compiler.
>>   #set(MPI_CXX_COMPILER "${CMAKE_CXX_COMPILER}")
>>   set(MPI_CXX_INCLUDE_PATH "C:/Program Files (x86)/Microsoft
>> SDKs/MPI/Include")
>>   # Make sure the correct libraries (64-bit or 32-bit) are selected.
>>   # Decide between 32-bit and 64-bit libraries for Microsoft's MPI
>>   if("${CMAKE_SIZEOF_VOID_P}" EQUAL 8)
>>     set(MS_MPI_ARCH_DIR x64)
>>   else()
>>     set(MS_MPI_ARCH_DIR x86)
>>   endif()
>>   set(MPI_CXX_LIBRARIES "C:/Program Files (x86)/Microsoft
>> SDKs/MPI/Lib/${MS_MPI_ARCH_DIR}/msmpi.lib")
>>   set(MPI_C_INCLUDE_PATH "${MPI_CXX_INCLUDE_PATH}")
>>   set(MPI_C_LIBRARIES "{${MPI_CXX_LIBRARIES}")
>>   set(MPIEXEC_NUMPROC_FLAG "-np" CACHE STRING "Flag used by MPI to
>> specify the number of processes for MPIEXEC; the next option will be the
>> number of processes.")
>> else()
>>     find_package(MPI REQUIRED)
>> endif()
>> --------
>> Some of this is taken from FindMPI.cmake.
>>
>> Attached is a zipped up file of the working CMakeLists.txt file and a
>> test file for you.
>>
>> I looked at FindMPI.cmake but I think you guys are better placed to make
>> the changes.
>>
>> Also in the case of FindMPI.cmake, you will need to fix the following
>> warning message:
>>
>> CMake Warning (dev) at C:/Program Files
>> (x86)/CMake/share/cmake-3.1/Modules/FindMPI.cmake:163 (if):
>> Policy CMP0054 is not set: Only interpret if() arguments as variables or
>> keywords when unquoted. Run "cmake --help-policy CMP0054" for policy
>> details. Use the cmake_policy command to set the policy and suppress this
>> warning.
>>
>> Quoted variables like "MSVC" will no longer be dereferenced when the
>> policy
>> is set to NEW. Since the policy is not set the OLD behavior will be used.
>> Call Stack (most recent call first):
>> CMakeLists.txt:5 (find_package)
>> This warning is for project developers. Use -Wno-dev to suppress it.CMake
>> Warning (dev) at C:/Program Files
>> (x86)/CMake/share/cmake-3.1/Modules/FindMPI.cmake:163 (if):
>> Policy CMP0054 is not set: Only interpret if() arguments as variables or
>> keywords when unquoted. Run "cmake --help-policy CMP0054" for policy
>> details. Use the cmake_policy command to set the policy and suppress this
>> warning.
>>
>> Quoted variables like "MSVC" will no longer be dereferenced when the
>> policy
>> is set to NEW. Since the policy is not set the OLD behavior will be used.
>> Call Stack (most recent call first):
>> CMakeLists.txt:5 (find_package)
>> This warning is for project developers. Use -Wno-dev to suppress it.
>>
>>
>> Regards
>>
>> Andrew
>>
>>
>> --
>> ___________________________________________
>> Andrew J. P. Maclean
>>
>> ___________________________________________
>>
>
>
>
> --
> ___________________________________________
> Andrew J. P. Maclean
>
> ___________________________________________
>



-- 
___________________________________________
Andrew J. P. Maclean

___________________________________________
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