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Article #483Re: World's Most Powerful Computing Sites
From: Kirk Hays
Date: Fri, 22 Jan 1993 18:51
Date: Fri, 22 Jan 1993 18:51
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1690 bytes
In article <1993Jan22.015827.26653@nas.nasa.gov>, fineberg@wilbur.nas.nasa.gov (Samuel A. Fineberg) writes: |> In article <1993Jan21.165159.10149@meiko.com>, richard@meiko.com (Richard Cownie) writes: |> |> fineberg@wilbur.nas.nasa.gov (Samuel A. Fineberg) writes: |> |> : Its certainly no less realistic than those for the i860. |> |> |> |> I have to disagree with you there. I know of *some* applications where |> |> the i860 can achieve a good fraction of claimed peak speed, e.g. on |> |> a double-precision matrix multiply you can do over 35MFLOPS, against |> |> a peak rate claimed as 40MFLOPS (or sometimes 60MFLOPS, because you can do |> |> 2 adds for each multiply). In any case, it's well over 50% of peak. |> |> I don't know too many people that write assembly code, and that is what you |> need to do to get 35 MFLOPs. False. Using the PGI compilers on C and FORTRAN source code, selected codes can achieve > 35 MFLOPS. As you point out, most codes get less. -- Kirk Hays - NRA Life, seventh generation. "The only thing necessary for the triumph of evil is for good men to do nothing." -- Edmund Burke (1729-1797)
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Newsgroups: comp.sys.super Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!eff!ssd.intel.com!hays From: hays@ssd.intel.com (Kirk Hays) Subject: Re: World's Most Powerful Computing Sites Message-ID: <C19r20.2wx@SSD.intel.com> Sender: usenet@SSD.intel.com Nntp-Posting-Host: taos Organization: Intel Supercomputer Systems Division References: <1993Jan20.232809.29241@nas.nasa.gov> <1993Jan21.165159.10149@meiko.com> <1993Jan22.015827.26653@nas.nasa.gov> Date: Fri, 22 Jan 1993 18:51:35 GMT Lines: 24