Dhrystone benchmark - DN330 vs. Sun-3 - Thread - go-pugleaf

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3 total messages Started by Mike Caplinger Mon, 23 Dec 1985 04:18

Dhrystone benchmark - DN330 vs. Sun-3

#54

Author: Mike Caplinger
Date: Mon, 23 Dec 1985 04:18

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I just got my 68020 upgrade, taking my Apollo up to a DN330.  One
of the first things I did was run the Dhrystone benchmark on it.
I got a number somewhere around 1700 - about the speed of a VAX/11-780.
Fine and good.

Now I see some Sun-3 results that run in the 3000s!  Are these for real?
Would someone explain to me why the Sun apparently runs almost twice
as fast as a DN330 with an identical processor?

	Mike Caplinger
	mike@bellcore.arpa
	ihnp4!bambi!mike

Re: Dhrystone benchmark - DN330 vs. Sun-3

#59

Author: John W Peterson
Date: Tue, 31 Dec 1985 00:44

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One other question - when you got your DN330 upgrade, did you also get
new compilers for them?  The stock SR9 compilers have some problems on the
020's - I've found bugs in the floating point department, and could easily
believe they might miss some optimisations for the DN330's.  (The easy way
to check is to try "/bin/cc kloo.c -M330" - if it doesn't work you're running
old compilers).

We got our hardware upgrades several weeks ago but had to nag the field 
office for the compiler upgrades.
-------

Re: Dhrystone benchmark - DN330 vs. Sun-3

#62

Author: apollo
Date: Fri, 03 Jan 1986 01:03

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Not all M68020's are alike.  Apollo is using the 12.5 MHz version
of the 68020.  Sun is shipping the 16.67 MHz version.  Sun put a
lot of special wrinkles into the Sun 3.  Your numbers are consistent
with numbers they claim as well.  There are many other games you
can play too.  It is not just the processor.  I understand they
played some games with their clock to avoid wait states.  Right now,
the Sun 3 is beating anything Apollo has.  The ball is now in Apollo's
court to see what they will come up with.

Bob Clayton
GE Calma R&D, San Diego

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