Thread View: comp.sys.super
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Started by Gunter Ahrendt
Fri, 22 Jan 1993 02:07
LIST OF SITES - NEW RATINGS
Author: Gunter Ahrendt
Date: Fri, 22 Jan 1993 02:07
Date: Fri, 22 Jan 1993 02:07
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Well, i'm happy that most people find some interest in the list, i guess we all agree that the rating system isn't very good, so i do want to change this to a standard benchmark figure, does somebody have the Dongarra (sp.) benchmark figures? Or is there another (LINPACK) that someone has figure for? If i can find some standard rating to cover most machines, i'll adjust my list, so please, send me.
Re: LIST OF SITES - NEW RATINGS
Author: Gary Smith
Date: Fri, 22 Jan 1993 15:39
Date: Fri, 22 Jan 1993 15:39
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Since many of those sites included [not very interesting] peak MFLOPS ratings for Intel Paragon and TMC CM-5 machines, but Dongarra's latest [January 13, 1993] Linpack report STILL has no Linpack numbers for the Paragons and CM-5s (even in Table 3, where one can make the matrices as large as they wish!), would some owner of these machines please give us the Linpack results for those two systems? ---Gary Randolph Gary Smith Internet: gary@chpc.utexas.edu Systems Group Phonenet: (512) 471-2411 Center for High Performance Computing Snailnet: 10100 Burnet Road The University of Texas System Austin, Texas 78758-4497
Re: LIST OF SITES - NEW RATINGS
Author: Andrew Tridgell
Date: Wed, 27 Jan 1993 09:56
Date: Wed, 27 Jan 1993 09:56
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>Since many of those sites included [not very interesting] peak MFLOPS >ratings for Intel Paragon and TMC CM-5 machines, but Dongarra's latest >[January 13, 1993] Linpack report STILL has no Linpack numbers for the >Paragons and CM-5s (even in Table 3, where one can make the matrices >as large as they wish!), would some owner of these machines please >give us the Linpack results for those two systems? I haven't tried linpack itself but I have coded some vector and matrix routines. On a CM-5 with vector units I have achieved 75MFlops per node for vector*matrix, matrix*vector and matrix*matrix routines. I have achieved 45MFlops for an outer product of two vectors. These are all for double precision numbers. I believe the quoted peak performance is 128MFlops per node. I am not a experienced CM5 programmer (these were my first vector unit routines) and expect that much better results could be obtained by someone with more experience. In particular I suspect that the pipelining of instructions could give me a big improvement. I coded these routines in CDPEAC and tested with vector lengths of around 100 and matrices of approx 100*100. On a related issue - has anyone got any code to copy data from scalar memory to the DP stack or heap on the CM5 at better than 16Mb per second? I really need to copy data much faster than that. This is really only an issue if you are programming using the CMMD message passing library. Andrew -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Andrew Tridgell CSLab, Research School of Physical Sciences Andrew.Tridgell@anu.edu.au Australian National University (x3064) =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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