[HagenC]

Hi everyone,
I used to use OpenFoam version 2.3.1, now I wanted to use the newer version v1612+. I had both of them installed in Virtual Boxes with newly setup Ubuntu. (Ubuntu14.04 for OF2.3.1 Ubuntu16.04 for OFv1612+).
Then I copied one of my cases, which run in OF2.3.1 perfectly to OFv1612+.
I can run the case in the new version as well, but I struggle with two problems:

1. When I use Allclean my constant/polyMesh folder is deleted as well, which I need as base for snappyHexMesh and which was not deleted in the old version.
2. It seems like using runParallel does not work for me any more.

   runParallel pisoFoam 4

   gives the error:

   Usage: pisoFoam [OPTIONS]
   options:
     -case <dir>       specify alternate case directory, default is the cwd
     -decomposeParDict <file>
                       read decomposePar dictionary from specified location
     -noFunctionObjects
                       do not execute functionObjects
     -parallel         run in parallel
     -postProcess      Execute functionObjects only
     -roots <(dir1 .. dirN)>
                       slave root directories for distributed running
     -srcDoc           display source code in browser
     -doc              display application documentation in browser
     -help             print the usage
   
   Using: OpenFOAM-v1612+ (see www.OpenFOAM.com)
   Build: v1612+
   
   [0] 
   [0] 
   [0] --> FOAM FATAL ERROR: 
   [0] Wrong number of arguments, expected 0 found 1
   [0] 
   [0] 
   FOAM parallel run exiting
   [0] 
   --------------------------------------------------------------------------
   MPI_ABORT was invoked on rank 0 in communicator MPI_COMM_WORLD 
   with errorcode 1.
   
   NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.
   You may or may not see output from other processes, depending on
   exactly when Open MPI kills them.
   --------------------------------------------------------------------------

I would be very happy, if someone has Ideas on that. By the way running

mpirun -np 4 pisofoam -parallel

works fine.
Thanks in advance!
Hagen

[HagenC]

The problem was that I had my blockMeshDict file in the polyMesh folder. It was no problem for running the case, OF found it there, but with ./Allclean it was deleted together with the polyMesh folder. I moved the blockMeshDict file to system folder, that solved the first problem.
Second one is still an issue.
Best,
Hagen

[HagenC]

To solve the second problem just omitt the number

runParallel pisoFoam -parallel

The number of processors can be specified by

runParallel -np 4 pisoFoam -parallel

but without specifying the number, the number according to decomposeParDict will be taken automatically.

[olesen]

Originally Posted by HagenC

To solve the second problem just omitt the number

runParallel pisoFoam -parallel

The number of processors can be specified by

runParallel -np 4 pisoFoam -parallel

but without specifying the number, the number according to decomposeParDict will be taken automatically.

You could try these instead (for 1612), note that your -parallel option shouldn't be there.

runParallel pisoFoam
runParallel -np 4 pisoFoam
runParallel -decomposeParDict system/someDecompDict pisoFoam

[HagenC]

Thank you Olesen,
you are right, the -parallel option is obsolete.
Best,
Hagen