[CMake] "find_package(MPI)" overriding "set(MPIEXEC)" in CmakeList.txt

[Pettey . Lucas]

That did not work. It still brings up the "mpiexec" from the operating system rather than the "aprun" job script submission command. Curiously, manually changing MPIEXEC in the CCMake Advanced screen works and is preserved throughout the configuration and Makefile generation process.

I would really like to set up Cmake so that users don't have to change anything in the Advanced menu. Any other ideas are appreciated.

Thanks
Lucas
________________________________________
From: cmake-bounces at cmake.org [cmake-bounces at cmake.org] on behalf of Yngve Inntjore Levinsen [yngve.levinsen at gmail.com]
Sent: Friday, January 10, 2014 5:33 AM
To: Pettey . Lucas; cmake at cmake.org
Subject: Re: [CMake] "find_package(MPI)" overriding "set(MPIEXEC)" in   CmakeList.txt

Hi,

Did Den 09. jan. 2014 22:49, skrev Pettey . Lucas:
> Hello,
>
> On a Cray XE6, I am using find_package(MPI REQUIRED) in my CMakeLists.txt. It correctly finds all of the MPI stuff, except that it sets the MPIEXEC to the login node mpiexec command. I would like to override this behavior and set the MPIEXEC command to the "aprun" wrapper, but it is not working. I have tried using set(MPIEXEC "aprun") both before and after the find_package(MPI REQUIRED) in my CMakeLists.txt.
>
> Thanks
> Lucas

Hi,

Did you try to use find_program? I think this will "override" the
find_program inside FindMPI.cmake:

find_program(MPIEXEC aprun)
find_package(MPI REQUIRED)
message("MPI exec: ${MPIEXEC}")

Cheers,
Yngve


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