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-   -   pimpleDyMFoam on multiple nodes (http://www.cfd-online.com/Forums/openfoam-solving/107901-pimpledymfoam-multiple-nodes.html)

amd October 9, 2012 04:59

pimpleDyMFoam on multiple nodes
 
Hello,

I am experiencing some trouble trying to use the solver pimpleDyMFoam in parallel on multiple nodes.
In this case, the computation is slowed (8 CPUs on 2 nodes is twice slower than 8 CPUs on 1 node).
I use scotch to decompose the domain (around 39000 cells by CPU) and GAMG to solve the linear systems.

Do you have any idea about what is the problem?
I would greatly appreciate your help.

AMD


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