msmpi and cygwin
 

Hi,

I am new to OpenFOAM and trying to simulate run employing all 4 processor my machine have.

I have looked into user guide and many forums about it, but still didn't find a way to fix this problem.

when I try to run following command;

mpirun -np 4 simpleFoam -parallel

it gives me followng error;

-bash: mpirun: command not found

will you guys please help me figure it out?

Well, it says what it says. Did you install an mpi implementation like openmpi or mpich? Did you compile OpenFoam by yourself?

Sent by my Honor 8 using Tapatalk

Hi Ruben,

Thank you for your reply.

Yes I did installed "msmpi" on windows platform. Yet, it is not working.

Ok, I'm not fully aware on how it works on Windows. Did you check the log of the compiling process? Can you post it here? Does it work serially?

Sent by my Honor 8 using Tapatalk

Yeah, it is working well serially.

while executing ./Allwmake in following directory;

/cygdrive/c/OpenFOAM/16.10/cygwin64/opt/OpenFOAM/OpenFOAM-3.0.x/src/Pstream


it returned with this;

touch: cannot touch '/opt/OpenFOAM/OpenFOAM-3.0.x/platforms/cygwin64mingw-w64DPInt32OptMSMPI/src/Pstream/mpi/using:msmpi': No such file or directory

I executed above command as I am getting error, "-bash: mpirun: command not found" while executing "mpirun -np 4 simpleFoam -parallel" after decomposing the domain.

I am not able to fix it, so far. I am checking documentation available on this.

No luck so far.

That message means it cannot find the command named mpirun, so it seems that the msmpi implementation of MPI does not provide a mpirun command or it is in a non-default folder (i.e. it's not in the PATH). I'm not so sure that OpenFOAM is compatible with msmpi.

As I said I'm no expert with cygwin, but could you install an MPICH or OpenMPI on it? It seems to be available: https://cygwin.com/cgi-bin2/package-...i?grep=openmpi

Hi Ruben,

I solved the problem by executing command mpiexec instead of msmpi. Btw, Thanks for your support.


Best Wishes,
Ankit