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From: Andrew Gallatin <gallatin@cs.duke.edu>
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Date: Mon, 28 May 2001 15:29:17 -0400 (EDT)
To: Riccardo.Veraldi@fi.infn.it
Cc: <freebsd-alpha@FreeBSD.ORG>
Subject: Re: tscp MIPS result really weird
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Riccardo.Veraldi@fi.infn.it writes:
 > 
 > Hello, I just run the tscp program taken at
 > 
 > http://socsci.colorado.edu/~tarrb/kerrigat/
 > 
 > I run it on my Miata DPW 500a and here is the weird result:
 > Nodes: 550822
 > Best time: 22900 ms
 > Nodes per second: 24053 (163.5 MIPS)
 > 
 > I am very disappointed I Was expecting something like 800 MIPS
 > Do you think the tscp is wrong or is that my system to have problems ??
 > Could anyone else try tscp on his Alpha machine even if is not Miata ??

Do you have a bcache?

I just ran this thing on a 600MHz 164lx with a 2mb bcache, 4.3-RELEASE:


GCC: cc -O3 -funroll-loops -fexpensive-optimizations -fschedule-insns2 *.c -o tsc.gcc *.o -lcompat 

Nodes: 627028
Best time: 10408 ms
Nodes per second: 60244
tscp> 

Then I compiled it on an osf/1 alpha and ran it on the same box:

DECC: cc -tune ev56 -O4 -fast -ifo *.c -o tsc.deccc

Nodes: 627028
Best time: 8904 ms
Nodes per second: 70420
tscp> 


Drew

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