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From: dollas@uiucdcsb.CS.UIUC.EDU
Newsgroups: net.arch
Subject: Re: Mips / MHz
Message-ID: <5600046@uiucdcsb>
Date: Mon, 28-Apr-86 22:01:00 EDT
Article-I.D.: uiucdcsb.5600046
Posted: Mon Apr 28 22:01:00 1986
Date-Received: Fri, 2-May-86 20:53:07 EDT
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Nf-From: uiucdcsb.CS.UIUC.EDU!dollas    Apr 28 21:01:00 1986


   Even so, things are usually even more complicated, as to what an 
instruction is. The 68010 to 68020 comparison is fair, because of the
instruction set similarity/upward compatibility. Among machines of 
different kinds, however, it may not be fair; one instruction may be
'increment the program counter by one', whereas another may be 'divide
by <some number>'. The various benchmarks came to equalize the criteria,
but with the implicit assumption that 'you get what you see'...  The Cray
computers don't do exceptionally for example because the pipelining of
operations is not used!!!

   Apostolos Dollas
   U. of Illinois
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