MD performance on 10 GBit/s or 20Gbit/s infiniband

From: Himanshu Khandelia (hkhandel_at_memphys.sdu.dk)
Date: Mon Oct 06 2008 - 09:08:35 CDT

We are buying a new cluster with 8-code nodes and infiniband, and have a
choice between 10 Gbit/s and 20 Gbit/s transfer rates between nodes. I do
not immediately see the need for 20GBit/s between nodes for MD
applications, but thought it might be worthwhile to ask for the experts'
opinions regarding this?

Is there any foreseeable advantage of having 20 Gbit/s connections as
opposed to 10 Gbit/s?

Thank you for the advice,

-Himanshu

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