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-   -   Run in parallel: bug or what? (http://www.cfd-online.com/Forums/openfoam-solving/69957-run-parallel-bug-what.html)

novyno November 10, 2009 11:34

Run in parallel: bug or what?
 
Hi!

I've observed a strange behaviour when I tried to run in parallel a case (with multiple regions) decomposed in a "strange" way. For many reasons I have to decompose some region (with manual method) without using all processor.

For example:

if I set numberOfSubdomains = 3 (for many reasons I can't change this value) and I want to decompose my domain only using 2 CPU, it is sufficient for me that in the "manual file decomposition" appear only the number 0 and 1.

decomposePar works well and splits the domain (with only a WARNING). If I check the mesh decomposition with paraview all seems ok. But when I run

mpirun -np 3 icoFoam (for example) -parallel

the solver doesn't works...

Anyone can tell me why? Is this a bug or I can't decompose (never) a domain in this way?

Thanks...

Valerio


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