[saeed jamshidi]

Hi all,
I,m using parallel processing for my simulation, and I have accomplished it successfully for 200 seconds. However, I wanna proceed it for 600 seconds, but I don't know whether it is possible or not?
By the way, I know about the role of latestTime in controlDict.
I would appreciate your help.

[Yann]

Hello Saeed,

Change the endTime in your controlDict from 200 to 600 and make sure the startFrom parameter is set to latestTime. Then you can run the solver with the same command you used the first time and it should proceed to continue the simulation from 200 to 600s.

Cheers,
Yann

[saeed jamshidi]

Dear Yann thank you for the reply.
I have tested the mentioned procedures for the series running, and it works very well.
But hear I have done these steps for parallel processing:

decomposePar
#------------------------------------------------------------------------------
mpirun -np 4 pimpleFoam -parallel 
#------------------------------------------------------------------------------
reconstructParMesh (for AMR)
reconstructPar

The question is whether OpenFOAM has the capability to resume a simulation after executing the `reconstructPar` command?!

Anyway I applied your mentioned solution in controlDict and then mpirun -np 4 pimpleFoam -parallel, But it does not work!

[Yann]

OpenFOAM has a very basic way to deal with serial / parallel operations: if you run serial commands, it will work with data written at the case root. If you run parallel commands, it will work with data written in the processor directories.

When running reconstructPar, you reconstructed data from the processor directories, but processor directories are not deleted. Once it is done, your data exist both in processors directories and in the time directories at the root of your case.

You can resume the simulation either in serial or parallel.

Now, what do you mean by

I applied your mentioned solution in controlDict and then mpirun -np 4 pimpleFoam -parallel, But it does not work!

What does not work? What error do you get?

[saeed jamshidi]

Dear Yann, I got my answers, you were right.
Thank you for your time.