[mpich-discuss] Open MPI does not work when MPICH or intel MPI are installed

[Jeff Squyres (jsquyres)]

FWIW, this question was answered on the Open MPI list:

    https://www.open-mpi.org/community/lists/users/2016/05/29280.php

Hope that helps.


> On May 23, 2016, at 7:58 AM, Megdich Islem <megdich_islem at yahoo.fr> wrote:
> 
> Hi,
> 
> I am using 2 software, one is called Open Foam and the other called EMPIRE that need to run together at the same time.
> Open Foam uses  Open MPI implementation and EMPIRE uses either MPICH or intel mpi.
> The version of Open MPI that comes with Open Foam is 1.6.5.
> I am using Intel (R) MPI Library for linux * OS, version 5.1.3 and MPICH 3.0.4.
> 
> My problem is when I have the environment variables of  either mpich or Intel MPI  sourced to bashrc, I fail to run a case of Open Foam with parallel processing ( You find attached a picture of the error I got ) 
> This is an example of a command line I use to run Open Foam
> mpirun -np 4 interFoam -parallel
> 
> Once I keep the environment variable of OpenFoam only, the parallel processing works without any problem, so I won't be able to run EMPIRE.
> 
> I am sourcing the environment variables in this way:
> 
> For Open Foam:
> source /opt/openfoam30/etc/bashrc
> 
> For MPICH 3.0.4
> 
> export PATH=/home/islem/Desktop/mpich/bin:$PATH
> export LD_LIBRARY_PATH="/home/islem/Desktop/mpich/lib/:$LD_LIBRARY_PATH"
> export MPICH_F90=gfortran
> export MPICH_CC=/opt/intel/bin/icc
> export MPICH_CXX=/opt/intel/bin/icpc
> export MPICH-LINK_CXX="-L/home/islem/Desktop/mpich/lib/ -Wl,-rpath -Wl,/home/islem/Desktop/mpich/lib -lmpichcxx -lmpich -lopa -lmpl -lrt -lpthread"
> 
> For intel
> 
> export PATH=$PATH:/opt/intel/bin/
> LD_LIBRARY_PATH="/opt/intel/lib/intel64:$LD_LIBRARY_PATH"
> export LD_LIBRARY_PATH
> source /opt/intel/compilers_and_libraries_2016.3.210/linux/mpi/intel64/bin/mpivars.sh intel64
> 
> If Only Open Foam is sourced, mpirun --version gives OPEN MPI (1.6.5)
> If Open Foam and MPICH are sourced, mpirun --version gives mpich 3.0.1
> If Open Foam and intel MPI are sourced, mpirun --version gives intel (R) MPI libarary for linux, version 5.1.3 
> 
> My question is why I can't have two MPI implementation installed and sourced together. How can I solve the problem ?
> 
> Regards,
> Islem Megdiche
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-- 
Jeff Squyres
jsquyres at cisco.com
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