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optimization question
From: |
Rick Riolo |
Subject: |
optimization question |
Date: |
Tue, 24 Oct 2000 17:49:28 -0400 (EDT) |
Here is how i make my "debug" swarm (2.1.1):
export SWARMSRCDIR="/appl/swarm2.1.1-um/swarm-2.1.1"
JAVAC=jikes CC="/appl/gcc2.9.5p/bin/gcc" $SWARMSRCDIR/configure \
--srcdir=$SWARMSRCDIR \
--prefix=/appl/swarm2.1.1/debug \
...
here is how i make an "optimized" version:
export SWARMSRCDIR="/appl/swarm2.1.1-um/swarm-2.1.1"
JAVAC=jikes CC="/appl/gcc2.9.5p/bin/gcc" CFLAGS="-O2"
$SWARMSRCDIR/configure \
--srcdir=$SWARMSRCDIR \
--prefix=/appl/swarm2.1.1/opt \
...
Doing these two ways with earlier swarms (1.4.1 etc)
used to make the opt version about 30% faster than the
debug version. They both seem to be about the
same speed with 2.1.1, and while i haven't timed it,
at least one user told me he thought his 2.1.1
"opt" swarm is much slower than his 1.4.1 "opt" swarm.
So...should I be doing optimization differently?
BTW, the swarm's so built have to run a variety
of pII and PIII machines (under rh) so I can't
optimize too specifically for chips.
thanks.
- r
Rick Riolo address@hidden
Center for Study of Complex Systems (CSCS)
4477 Randall Lab
University of Michigan Ann Arbor MI 48109-1120
Phone: 734 763 3323 Fax: 734 763 9267
http://www.pscs.umich.edu/PEOPLE/rlr-home.html
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- optimization question,
Rick Riolo <=