Author: Jeremiah Penery
Date: 16:21:52 07/09/03
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On July 09, 2003 at 08:25:39, Vincent Diepeveen wrote: >Nevertheless this machine is record breaking and always will be remembered for >that. Assuming it is designed for big vectors it's quite a bit slower in latency >then because if you optimize for huge transfers at once then a single transfer >is probably very pricey. > >So let's ignore the latency question, it wasn't designed for it simply. Instead of just guessing, why don't you go look it up. Information is widely available. Here - http://www.sc.doe.gov/ascr/dongarra.pdf - the MPI_PUT latency is listed as 6.63us. Everywhere else I've seen lists under 10us, with most being much closer to 5us.
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