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From: pack@acd.acd.ucar.edu (Dan Packman)
Newsgroups: comp.unix.aix
Subject: Re: Lies, damned lies, and benchmarks: RS6000 v. SS-1+
Message-ID: <10142@ncar.ucar.edu>
Date: 1 Feb 91 17:29:48 GMT
References: <1991Jan30.003004.74@intek01.uucp>
Sender: news@ncar.ucar.edu
Reply-To: pack@acd.UCAR.EDU (Dan Packman)
Organization: Atmospheric Chemistry Division/NCAR, Boulder CO
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RE: reports of slow programs and difficulty porting to RS6000 versus
    Sparcstation 1+

If the application used details of system internals or depended on features
not yet present in AIX (eg, diskquotas), then porting might be a problem.

For what it is worth, I have recently finished benchmarking a *real*
application [The application is a line-by-line infrared radiance calculation]
on several platforms.  The results were (minutes:seconds):

   CRAY XMP           ~3:00
   IBM RS6000/320     14:45
   DEC 5500           23:26
   Solbourne 5E/802I  51:30
   Sparcstation 1     86:46

Standard fortran programs port easily.  System throughput is excellent.

PS: Standard disclaimers.
 
Dan Packman     NCAR                         INTERNET: pack@ncar.UCAR.EDU
(303) 497-1427  P.O. Box 3000                   CSNET: pack@ncar.CSNET
                Boulder, CO  80307       DECNET  SPAN: 9.367::PACK