[mpich-discuss] 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
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