Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!mcsun!ukc!cam-cl!news
From: nbvs@cl.cam.ac.uk (Nicko van Someren)
Newsgroups: comp.sys.acorn
Subject: Re: ARM-3 benchmarks
Summary: ARM vs SPARC
Message-ID: <1991May9.225306.27109@cl.cam.ac.uk>
Date: 9 May 91 22:53:06 GMT
References: <1694@culhua.prg.ox.ac.uk>
Reply-To: nbvs@cl.cam.ac.uk (Nicko van Someren)
Organization: U of Cambridge Comp Lab, UK
Lines: 37

In article <1694@culhua.prg.ox.ac.uk> as@prg.ox.ac.uk (Andrew Stevens) writes:
>
>Dave Redman obtains the following results for Dhrystone (2.1?)
>benchmarks.
>
>>       Machine         Dhyrstones per sec
>>        ARM2            5289
>>        ARM3 @ 25Mhz    14883
>>        SUN3/60         2888
>>        SUN/Spark1      8000
>>        SUN/Spark2      16000
>
>The ARM results are exactly in line with what I've observed but
>I am *amazed* at the low figures for the SUN machines.   I am
>sure the SS1 does much more than 8000 dhrystones.  I think 18000
>is much nearer the mark - but I don't recall the last benchmark
>postings. Certainly I don't believe 8000 - the thing clocks at
>20Mhz and has a fair sized cache.  Furthermore, I have never known
>it to run *anything* slower than my 30Mhz ARM3 A410.  In fact things
>typically seem to run around 50 per cent faster (unless you do
>lots of 32x32 integer multiplies :-) ). I guess this is
>probably due to faster main memory.   The SS2 is approximately
>twice as fast again, an ARM-3 A4x0 simply isn't in the same ballpark.
>The SUN 3/60 (25Mhz 68020) when I observe it chugs along somewhere between
>ARM2 and ARM3 A4x0's. 2900 dhrystones is more SUN3/50 or Macintosh-II
>territory.
>
>Can anyone shed any light on Dave's mysterious results?

I went and tried it.  The above figures seem about right if you use the SUN
standard compiler but if you use gcc the SUN goes lots faster (50%).  Roll
on gcc for the Archi.!


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| Nicko van Someren, nbvs@cl.cam.ac.uk, (44) 223 358707 or (44) 860 498903    |
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