Author: Frank E. Oldham
Date: 12:51:20 05/14/04
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On May 14, 2004 at 08:23:41, Robert Hyatt wrote: >On May 13, 2004 at 23:58:43, Vincent Diepeveen wrote: > >>On May 13, 2004 at 12:46:29, Robert Hyatt wrote: >> >>>On May 13, 2004 at 07:47:32, Vincent Diepeveen wrote: >>> >>>Also you do know this is a cluster? Not a NUMA box? >>> >>>Of course you did. >>> >>>I'm sure your program does _great_ on a message-passing cluster... >> >>May i remind you your message passing cluster you get there has a faster one way >>pingpong latency than origin3800 at 512 processors.... > >May I remind you that NUMA and clusters are _two_ different things??? > >Or is it pointless??? > >Clusters have _zero_ shared memory. > > Apparently this machine will be based on the Cray X1 architecture -- this is NUMA and supports a single-system-image (as well as various MPI types). It also uses traditional vector processors. Frank
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