[Lustre-discuss] Max bandwidth through a single 4xQDR IB link?

[Ashley Pittman]

Hi,

Could anyone confirm to me the maximum achievable bandwidth over a single 4xQDR IB link into a OSS node.  I have many clients doing a write test over IB and want to know the maximum bandwidth we can expect to see for each OSS node.  For MPI over these links we see between 3 and 3.5BG/s but I suspect Lustre is capable of more than this because it's not using DALP, is this correct?

Ashley.

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Ashley Pittman, Bath, UK.

Padb - A parallel job inspection tool for cluster computing
http://padb.pittman.org.uk