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Why can't I get AcuSolve to run in parallel across nodes on my cluster using Infiniband?

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Early versions of ofed had a bug in the implementation of the fork() function. This function is needed byAcuSolve to properly launch parallel processes. This bug is known to appear in ofed 1.1. To determine the version of ofed installed on your system, execute the following command: 

rpm -q -a | grep ofed 

If you are having trouble launching AcuSolve in parallel, and the ofed version is 1.1, please set the following environment variable before launching the solver: 


This will force AcuSolve to spawn the parallel processes using a method that works around the bug in ofed. Note that the bug was fixed in ofed 1.2 and newer.


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