nproc number in decomposeParDict or Allrun for checkMesh

AlxB · May 5, 2021, 11:54

dear foamers,

how to set one time only the number of processor ($nproc) which will be used in:

. decomposeParDict

Code:

numberOfSubdomains $nproc;

. Allrun in the checkMesh command

Code:

runApplication -np $nproc checkMesh –parallel

should I write it in decomposeParDict first,
but then what is the command line in Allrun to get it ?

or should I do the contrary,
but then what is the command line in decomposeParDict to get it ?

I have also another question:
how to check the boundary layer coverage with checkMesh ?

thanks if someone could help me on this topic

Lorenzo210 · May 7, 2021, 08:28

Hi,
When you want to run an application in parallel you should write "runParallel".
Example in an Allrun:

runApplication blockMesh
runApplication decomposePar

runParallel $(getApplication)

runApplication reconstructPar

You can see many examples in tutorials, for example in tutorials/multiphase/interFoam/laminar/damBreak.
For what concerns decomposeParDict, you should write there the number of cores, and then runParallel will see that information.

The second question is not so clear to me, sorry.

Cheers,
Lorenzo

May 5, 2021, 11:54	nproc number in decomposeParDict or Allrun for checkMesh	#1
AlxB Member Join Date: Apr 2021 Posts: 41 Rep Power: 5	dear foamers, how to set one time only the number of processor ($nproc) which will be used in: . decomposeParDict Code: numberOfSubdomains $nproc; . Allrun in the checkMesh command Code: runApplication -np $nproc checkMesh –parallel should I write it in decomposeParDict first, but then what is the command line in Allrun to get it ? or should I do the contrary, but then what is the command line in decomposeParDict to get it ? I have also another question: how to check the boundary layer coverage with checkMesh ? thanks if someone could help me on this topic

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May 7, 2021, 08:28		#2
Lorenzo210 Member Lorenzo Join Date: Apr 2020 Location: Italy Posts: 44 Rep Power: 6	Hi, When you want to run an application in parallel you should write "runParallel". Example in an Allrun: runApplication blockMesh runApplication decomposePar runParallel $(getApplication) runApplication reconstructPar You can see many examples in tutorials, for example in tutorials/multiphase/interFoam/laminar/damBreak. For what concerns decomposeParDict, you should write there the number of cores, and then runParallel will see that information. The second question is not so clear to me, sorry. Cheers, Lorenzo