I like to find out, if there is a real difference in openMPI performance (latency) when it runs under Redhat Linux with MRG kernel installed.
Redhat claims that its MRG Grid Support for a wide variety of tasks, ranging from sub-second calculations to long-running, highly parallel (MPI) jobs.
Does anyone has used OpenMPI in the linux MRG Grid environment.
If you have, have you seen any differencec in OMPI performance.
I do appreciate any comments.

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