Re: Anything wrong with the i860

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Article #11887

#11887

From: Colin Plumb
Date: Thu, 30 May 1991 14:21

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In article <dank.674423728@blacks> dank@blacks.jpl.nasa.gov (Dan Kegel) writes:

>Now that I've compared the speed of Fortran programs, I'd like to compare the
>speed of hand-coded assembly versions of the same thing.
>The Alliant comes with a canned signal processing library which is presumably
>hand-optimized assembly code.

Various i860 library vendors claim the following times for 1024-point
complex FFT's:  741 us, 830 us, 745 us, 1040 us.  I've heard rumours
that someone's got a routine operating at <700 us, but that's on the
edge of credibility based on some analyses I've made.
-- 
	-Colin

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Path: arc1-ca.pugleaf.net!utzoo!dciem!array!colin

References: <1991May7.145407.18417@midway.uchicago.edu> <3486@charon.cwi.nl> <3986@ssc-bee.ssc-vax.UUCP> <dank.674423728@blacks>

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Path: arc1-ca.pugleaf.net!utzoo!dciem!array!colin
From: colin@array.UUCP (Colin Plumb)
Newsgroups: comp.arch
Subject: Re: Anything wrong with the i860
Message-ID: <1905@array.UUCP>
Date: 30 May 91 14:21:47 GMT
References: <1991May7.145407.18417@midway.uchicago.edu> <3486@charon.cwi.nl> <3986@ssc-bee.ssc-vax.UUCP> <dank.674423728@blacks>
Organization: Array Systems Computing, Inc., Toronto, Ontario, CANADA
Lines: 13

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