running mpi program in mic

Balajee_G_ — Tue, 28 Jul 2015 17:25:44 GMT

I have compile OpenFOAM for mic architecture. I am able to run the program without any trouble. But I am having trouble with running openfoam in parallel. The way OpenFOAM works in parallel is you decompose the mesh in to sub domains and put the folders in to processor 1 2 etc folders

But when I issue the command to run the program in parallel, it is creating two seperate instances of the same program.

export I_MPI_MIC=1

mpiexec.hydra -np 2 ./pisoFoam

I am adding some of the first lines of output

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0

As you can see the program is being executed twice. Am I doing something wrong here? Could you please help me.

As far as it creating two

Frances_R_Intel — Tue, 01 Sep 2015 13:15:48 GMT

As far as it creating two separate instances of the program when you run "mpiexec.hydra -np 2 ./pisoFoam", yes, that is what the '-np 2' is telling it to do. Could there be some system out there where the two instances of the program are instead handled as threads in a single program? I don't know the MPI standard well enough to say if that is allowed or not, but it wouldn't surprise me. However, my expectation would be to see two separate processes.

topic As far as it creating two in Software Archive

running mpi program in mic

As far as it creating two