CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM Running, Solving & CFD (http://www.cfd-online.com/Forums/openfoam-solving/)
-   -   Memory requirements for serial and parallel runs (http://www.cfd-online.com/Forums/openfoam-solving/58610-memory-requirements-serial-parallel-runs.html)

denner August 26, 2008 15:11

Hi OpenFOAM-Community, I have
 
Hi OpenFOAM-Community,
I have a question concerning the memory requirements of simpleFoam.

I tried to run a simpleFoam simulation with a mesh of about 4 million cells on a multicore-cpu computer with 8GB RAM. The serial-run breaks down when starting the 1st iteration. But if I take the same case, decompose into two parts and run in parallel with 2 nodes on the same computer (8GB RAM), there is no more memory problem.

Is there any special reason for that kind of memory reequirement?

Best regards,
Fabian


All times are GMT -4. The time now is 17:46.