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-   -   Why openfoam can not write time folder when the processor number increases? (http://www.cfd-online.com/Forums/openfoam-solving/124078-why-openfoam-can-not-write-time-folder-when-processor-number-increases.html)

yzf1215 September 26, 2013 21:51

Why openfoam can not write time folder when the processor number increases?
 
When I was using 32 processors for parallel computing, openfoam can write time folder as I defined in controlDict. However, when I increased the processor number, say, to 64, it stoped writting and the log is not written after printing the coefficients.

musahossein September 26, 2013 22:26

That should not be the case. Openfoam can deal with over a 1000 processors. What is your mesh size - if your mesh size is not sufficiently large then this will impede the processing. You should start with smaller number of processors and then add a few processors incrementally so that you can see how the mesh is being decomposed and at which threshold the solver stops writing to the log.


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