From mn1.,at,.helix.nih.gov  Tue Jun 23 16:53:54 1998
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Date: Tue, 23 Jun 1998 16:53:51 -0400 (EDT)
From: "M. Nicklaus" <mn1 $#at#$ helix.nih.gov>
Message-Id: <199806232053.QAA01584-!at!-helix.nih.gov>
To: CHEMISTRY ":at:" www.ccl.net
Subject: Re: Is SGI O2/150 much faster than PII/233?
Cc: mn1.,at,.helix.nih.gov


On Sat, 20 Jun 1998 23:10:54, Yubo Fan wrote:

> Recently, someone told me that SGI O2/150 workstation could run G94 much
> faster than G94W run on PII/233? Is it true?  Could you please give some
> advice?

I don't have benchmark results for either exactly an SGI O2/150 or for G94W    
run on PII/233.  However, in the context of extensive benchmarking of G94 on  
a range of computers--from Cray J90 to Alpha and Pentium II/Pro systems--
(paper forthcoming in J. Chem. Inf. Comput. Sci.), we have obtained results
for two systems that are close enough that they might allow extrapolation to
the computers you're looking at.

Aggregate job cpu times (sec) for G94 test jobs 1, 28, 94, 155, 194, 296, 302:
SGI Origin 200, R10000 195 MHz CPU, 64 MB RAM:         923 sec
Pentium II 300 MHz CPU, 64 MB RAM, Windows NT:        1283 sec

So I would venture to guess that an SGI O2/150 workstation would run G94
faster than G94W run on PII/233, but not "much faster".  I'd expect on the
order of 50% more CPU time on the PII/233 compared to SGI O2/150.

Hope this helps.

Marc

------------------------------------------------------------------------
 Marc C. Nicklaus                        National Institutes of Health
 E-mail: mn1[ AT ]helix.nih.gov               Bldg 37, Rm 5B29
 Phone:  (301) 402-3111                  37 Convent Dr, MSC 4255       
 Fax:    (301) 496-5839                  BETHESDA, MD 20892-4255    USA 
      http://rex.nci.nih.gov/RESEARCH/basic/medchem/mcnbio.htm
    Laboratory of Medicinal Chemistry, National Cancer Institute,  &
  Center for Molecular Modeling, Ctr. for Information Technology, NIH
------------------------------------------------------------------------