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Article #809Re: P4 vs Athlon for Linux latexing, is gcc-2.95 responsible?
From: David Kastrup
Date: Mon, 17 Jun 2002 10:10
Date: Mon, 17 Jun 2002 10:10
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fammacd=!SPAM^nothanks@garden.net (George Macdonald) writes: > On Sun, 16 Jun 2002 09:30:49 GMT, "Robert Myers" <rmyers1400@attbi.com> > wrote: > > > > >Without SSE2, which requires that loops be vectorized, a 1.7GHz P2 > >is a very weak foating point performer, as many have noted, and as > >you have confirmed for yourself. If I take naive code compiled > >with icc, my overclocked Celeron running at 1.5MHz will beat a > >1.7GHz P4 every time. > > Are you sure about this? I thought the idea with P4's SSE2 was that > for scalar calcs you have addressable registers (no stack) and > therefore no need of the FXCH instructions for stack swaps and it > runs faster than the old x87 FPU. I've no experience yet but that's > how I read things. The way "how [you] read things" can be improved upon. For an example, tell us how you read the first two words of the paragraph you quoted above. -- David Kastrup, Kriemhildstr. 15, 44793 Bochum Email: David.Kastrup@t-online.de
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From: David Kastrup <David.Kastrup@t-online.de>
Newsgroups: comp.os.linux.hardware,gnu.gcc,comp.sys.ibm.pc.hardware.chips,comp.text.tex
Subject: Re: P4 vs Athlon for Linux latexing, is gcc-2.95 responsible?
Date: 17 Jun 2002 12:10:31 +0200
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