[OMPI users] Open MPI does not work when MPICH or intel MPI are installed

[Megdich Islem]

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 Foammpirun -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:$PATHexport LD_LIBRARY_PATH="/home/islem/Desktop/mpich/lib/:$LD_LIBRARY_PATH"export MPICH_F90=gfortranexport MPICH_CC=/opt/intel/bin/iccexport MPICH_CXX=/opt/intel/bin/icpcexport 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_PATHsource /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 3.0.1If 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

[Andy Riebs]

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[Gilles Gouaillardet]

modules are way more friendly that manually setting and exporting your
environment.
the issue here is you are setting your environment in your .bashrc, and
that cannot work if your account is used with various MPI implementations.
(unless your .bashrc checks a third party variable to select the
appropriate mpi, in this case, simply extend the logic to select openmpi)

if you configure'd with --enable-mpirun-prefix-by-default, you should not
need anything in your environment.

Cheers,

Gilles

Hi,
The short answer: Environment module files are probably the best solution
for your problem.
The long answer: See
<http://www.admin-magazine.com/HPC/Articles/Environment-Modules>
<http://www.admin-magazine.com/HPC/Articles/Environment-Modules>, which
pretty much addresses your question.
Andy
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.
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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