OpenFOAM postprocessing and advanced running options
OpenFOAM postprocessing and advanced running options
OpenFOAM postprocessing and advanced running options
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POLITECNICO DI MILANO CHALMERS<br />
Running in parallel: execution<br />
An application is run in parallel using the mpirun comm<strong>and</strong>:<br />
mpirun --hostfile -np <br />
-parallel > log<br />
where: is the number of processors; is the executable, e.g.<br />
simpleFoam; <strong>and</strong>, the output is redirected to a file named log.<br />
The file contains the names of the machines listed, one machine per line<br />
The names must correspond to a fully resolved hostname in the /etc/hosts file of the<br />
machine on which the openMPI is run. The file would contain:<br />
hostname1<br />
hostname2 cpu=2<br />
hostname3<br />
In our case it becomes:<br />
mpirun -np 2 simpleFoam . pitzDailyParallel -parallel > log &<br />
Gianluca Montenegro/ <strong>OpenFOAM</strong> <strong>postprocessing</strong> <strong>and</strong> <strong>advanced</strong> <strong>running</strong> <strong>options</strong>
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