[Beowulf] building Infiniband 4x cluster questions

Chris Samuel samuel at unimelb.edu.au
Mon Nov 14 03:25:08 EST 2011


Hi Gilad,

On Mon, 14 Nov 2011 03:52:03 PM Gilad Shainer wrote:

> There is some add latency due to the 66/64 new encoding, but
> overall latency is lower than QDR. MPI is below 1us.

Thanks for that.  So I'd guess a pair of nodes with QDR cards
in the same slot would have lower latency again ?

cheers!
Chris
-- 
   Christopher Samuel - Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
         http://www.vlsci.unimelb.edu.au/
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