2008/10/10 John Hearns <[EMAIL PROTECTED]> > > (1) Tell your Dell salesman that you have asked for help on this problem > on a public mailing list for High Performance Computing. Tell him/her that > you need high level Dell support on this. >
ps. By high level support I mean that you are put in direct contact with one of the engineers responsible for the design of these systems in the factory. You do not want to talk to the normal support chain, and be asked if you have run some diagnostics program downloaded from the Dell site, etc. As a general observation, not particularly aimed at Dell, I have seen this type of behaviour before. Beowulf clusters are built from COTS systems - servers which are disigned for a workload of webserving, or running farms of virtual servers. I really think that the manufacturers would be surprised at the typical HPC workload - running all cores flat out at 100%, having applications which can comfortably use a couple of hundred gigs of RAM. My feeling is that the PSUs are specced to cope with these loads, but any out of spec ones will be on the edge. RAM timings too - if you are stressing all the RAM in a system you'll show up any weaknesses.
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