Allclean deleting polyMesh directory and not working runParallel after update
 

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.
   Code:

   ---

   runParallel pisoFoam 4

   ---

   gives the error:
   Code:

   ---

   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 works fine.
Thanks in advance!
Hagen

Solved polyMesh Issue
 

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

Solved runParallel
 

To solve the second problem just omitt the number
The number of processors can be specified by
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.

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you are right, the -parallel option is obsolete.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