CFD Online Discussion Forums - mpiRun Stop AND Re-Start

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mpiRun Stop AND Re-Start

How do I stop and then re-start mpirun for a case?.

I use mpirun from within my case directory in the following way:

Code:

mpirun -np 4 simpleFoam -parallel | tee log/simpleFoam.log

This is the content of my controlDict (set to save @ iter 1000); I want to change a few parameters (related to convergence) and then restart (as described in this post : http://www.cfd-online.com/Forums/ope...tml#post412941 ) :

Code:

FoamFile

{

    version 2.0;

    format ascii;

    class dictionary;

    location system;

    object controlDict;

}



    startFrom startTime;

    startTime 0;

    stopAt endTime;

    endTime 2000.0;

    deltaT 1.0;

    writeControl timeStep;

    writeInterval 1000.0;

    purgeWrite 0;

    writeFormat ascii;

    writePrecision 10;

    writeCompression uncompressed;

    timeFormat general;

    timePrecision 6;

    graphFormat raw;

    runTimeModifiable true;

I've made the effort to look around and truly have not found an answer that can help me. The original file was created using helyx-OS. Thank you very much in advance.

You might be looking for

startFrom latestTime;

This will restart the simulation at the last recorded time step.

Stopping and Restarting an openFoam run

Hi Chris,

I think I got it. I was looking for some of flag to put on the mpirun command; obviously I was lost. This is what I should do:

After 1000 iterations (I have it set to save then), break the process CTRL-C in the Terminal should do it.
Make my changes to speedup convergence (e.g. change schemes to 2nd order)
Change "startFrom startTime;" to "startFrom latestTime;" in the controlDict file.
Go back to the terminal and run that sucker again (i.e. mpirun -np 4 simpleFoam -parallel | tee log/simpleFoam.log).

Thank you very much, it worked perfectly.

Quote:

Originally Posted by vbchris (Post 417954)

You might be looking for startFrom latestTime;
This will restart the simulation at the last recorded time step.