Author: Vincent Diepeveen
Date: 21:18:25 07/08/03
Go up one level in this thread
On July 08, 2003 at 23:10:03, Jay Urbanski wrote: >On July 08, 2003 at 23:03:01, Jay Urbanski wrote: > >>On July 07, 2003 at 23:35:45, Robert Hyatt wrote: >> >>>>I have PVM running on our giganet switch, which is faster than myrinet. But, >>>as I said, such clusters are _rare_. TCP/IP is the common cluster connection, >>>for obvious reasons. And that's where the interest in clusters lies, not >>>in how exotic a combination you can put together, but in what kind of >>>performance you can extract from a common combination. >> >>Giganet is not faster than Myrinet - it's 1.25Gb/s compared to Myrinet's 2Gb/s >>and it has higher latency. Giganet is also no longer being sold - it's a dead >>technlogy. But such clusters aren't *that* rare - I count 57 Linux clusters >>with fast (better than GigE) on the TOP500 list. >> >>Heck - if we had a decent MPI chess program available I bet any number of those >>"exotic" clusters would sign up for an exhibition match with one of the >>super-GM's. One thing they all have in common is that they *love* publicity. > >Assuming, of course, that such a program / hardware combination warranted such a >match. :) You mean: that i need to pay for such a match? That's the opposite of what you just posted the message before. Hell, the only guys that gave me a logon to their supercomputer was the dutch government for which i thank them. Also it's the worlds fastest machine (expressed in latency) that is giving away system time to such projects. Note that IBM only gave away system time at a poor 32 node cluster. With sick high latencies. each node was 100Mhz (2 nodes 120Mhz). Even in 1997 that wasn't considered fast. Zugzwang uses MPI by the way. I remember Feldmann telling how hard it was for him to get system time, and i can assure you. That's *definitely* the case. I'm glad i just had to write 1 page for each processor that i get. Otherwise i would not have a life.
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