Hi all,
I want to turn off the parallel function in my CFDEM coupling case. I have set:
1. change the processor number to 1 in liggghts input file;
2. change the parCFDDEMrun.sh: nrProcs="10" -----> "1";
3. in folder CFD/system/decomposeParDict: change numberofSubdomains to 1.
When I use "./Allrun.sh" to execute the case, it reports "trying to run parallel using 1 processor" and stopped. So the question is how to turn off the parallel function in CFD-DEM coupling computation?
Many thanks!
Rachel
Daniel Queteschiner | Tue, 06/25/2019 - 09:12
OpenFOAM restriction
When using MPI in CFDEMcoupling (i.e., using the data exchange model twoWayMPI), MPI is initialized via OpenFOAM which requires at least 2 processes, see https://github.com/OpenFOAM/OpenFOAM-6/blob/master/src/Pstream/mpi/UPstr...
So it's actually a restriction by OpenFOAM (for whatever reason ...)