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From: rro@debussy.cs.colostate.edu (Rod Oldehoeft)
Newsgroups: comp.arch
Subject: Re: New SparcStation
Message-ID: <11772@ccncsu.ColoState.EDU>
Date: 18 Dec 90 20:58:12 GMT
References: <1990Dec13> <3300233@m.cs.uiuc.edu> <44137@mips.mips.COM>
Sender: news@ccncsu.ColoState.EDU
Organization: Colorado State Computer Science Department
Lines: 24

In article <44137@mips.mips.COM> mash@mips.COM (John Mashey) writes:
>In article <3300233@m.cs.uiuc.edu> gillies@m.cs.uiuc.edu writes:
>>
>>I think it's a laugh that Sun quotes "28.5 mips".  That's 28 usable
>>mips for normal every-day jobs, and .5 mips for the background task
>>that emulates a vax/11-780 at half speed for pedagogical reasons.
>>
... text deleted ...
>
>These are, of course, Dhrystone-mips anyway....  hence, not only is
>the .5 useless, the whole number is mostly useless :-)
>Give them credit for supplying the SPEC numbers, thank goodness...

Here's a small gotcha.  The quoted performance numbers for a SPARC II
(28.5 MIPS, 21 SPEC) are obtained by using the optional optimizing
compiler, Sun C 1.1,  instead of the bundled compiler.  Cute.

Anyone know the SPEC value using the default software?


Rod Oldehoeft                    Email: rro@cs.colostate.edu
Computer Science Department      Voice: 303/491-5792
Colorado State University        Fax:   303/491-2293
Fort Collins, CO  80523