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inter-node communication during cluster execution

Posted Feb 17, 2011, 8:03 a.m. EST 0 Replies

Shakeeb Bin Hasan
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Hi,

While simulating a job in shared-memory model on multiple physical nodes, I noticed on ganglia that the full CPU resources at each node are not always engaged in solving the model. May be it is a characteristic of my model or (MUMPS) solver. But could it be that Comsol might be using the inefficient ethernet channels for inter-node communications? Our cluster supports infiniband channel for faster communication and I would like to know if there is a way to enable it in case it is not enabled by default?

Attached is ganglia's output.

Thanks

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0 Replies Last Post Feb 17, 2011, 8:03 a.m. EST
COMSOL Moderator

Hello Shakeeb Bin Hasan

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