Author: Frank E. Oldham
Date: 15:11:00 05/14/04
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On May 14, 2004 at 17:23:13, Robert Hyatt wrote: >On May 14, 2004 at 15:51:20, Frank E. Oldham wrote: > >>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 > > >It doesn't look that way to me. This appears to be a "son of red storm" which >is opteron-based and not related to the X1 whatsoever. IE they have already >built a 10K node opteron box to deliver something around 50 tflops. This was >old news earlier this year. In this case it is a "NUMA-extreme" system because >it is connected in a 3d mesh. It'll work well for problems that have 3d data >sets that fit. It'll die for others like chess without a _lot_ of very specific >tuning. Way beyond normal NUMA-type tuning I'll add. > >I can't see the X1 extending that far. The biggest configuration I have heard >of has 4096 cray vector processors. Vector processing is really memory >intensive and that's the "meat and potatoes" of the X1 architecture.. some cool >stuff with cache and address translation... Hmm, it looks like real data is scarce....I found this small piece, mentioning the "Cray X2" -- (quote from ORNL news at their web site) ============ The partnership's aggressive timetable calls for increasing the capacity of the current ORNL Cray X1 computer to 20 teraflops this year and adding a 20-teraflop Cray Red Storm in 2005. A key member of the partnership, Argonne National Laboratory, will install a 5-teraflop IBM Blue Gene computer. A 100-teraflop Cray X2 computer at Oak Ridge is planned to be added in 2006, which will be increased to a total of 250 teraflops in 2007. The supercomputer at ORNL will be housed in a new 170,000 square foot facility that includes 400 staff and 40,000 square feet of space for computer systems and data storage. The machines will run on 12 megawatts of power supplied by the Tennessee Valley Authority. =========== Frank
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