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Article #239Re: Wanted: Ultra-fast fortran compiler for UNIX
From: 840033
Date: Mon, 29 Jul 1985 02:30
Date: Mon, 29 Jul 1985 02:30
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1275 bytes
Fortran (unfortunately ?) is important to us; we've looked at Fortran execu-
tion times closely on our Sys III derivative, compared to BSD 4.2, Tops 20,
and VAX VMS.
The primary problems are most definitely in the math libraries. A loop such
as
DO .....
j = j+k
r = a*b
......
will stay within the 30% performance range mentioned previously. But insert
cos(), atan(), etc, and Unix Fortran slows to a crawl.
I/O isn't much better .................
greg pavlov, FSTRF, Amherst, N.Y.
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site hscfvax.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!cbosgd!cbdkc1!desoto!packard!ihnp1!ihnp4!mhuxn!mhuxr!ulysses!allegra!mit-eddie!genrad!panda!talcott!wjh12!hscfvax!pavlov From: pavlov@hscfvax.UUCP (840033@G.Pavlov) Newsgroups: net.lang.f77,net.unix Subject: Re: Wanted: Ultra-fast fortran compiler for UNIX Message-ID: <131@hscfvax.UUCP> Date: Sun, 28-Jul-85 22:30:55 EDT Article-I.D.: hscfvax.131 Posted: Sun Jul 28 22:30:55 1985 Date-Received: Wed, 31-Jul-85 02:13:51 EDT References: <621@astrovax.UUCP> <9871@Glacier.ARPA>, <426@carina.noao.UUCP> Organization: Health Sciences Computing Facility, Harvard University Lines: 20