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EGCS Installation
- To: egcs at cygnus dot com
- Subject: EGCS Installation
- From: Jakob Oestergaard <jakob at ostenfeld dot k-net dot dk>
- Date: Fri, 26 Dec 1997 16:11:32 +0100 (MET)
Hi!
I successfully compiled and installed egcs 1.0 on a RedHat 5.0 system.
The hardware is a Dual PPro 166 w. 128 Megs. I guess compile took around
half an hour (although I didn't time it).
I did a little timing on a molecular dynamics simulation tool, comparing
the performance when compiled with standard GCC and with EGCS.
Options used with GCC:
-m486 -O3 -fexpensive-optimizations -fomit-frame-pointer
Options used with EGCS:
-march=3Di686 -O3 -fexpensive-optimizations -fomit-frame-pointer
I experienced no real speedup, but that was expected since the program is
very memory intensive, so I guess most of the time in the program is spent
waiting on cache-misses. Especially because the program runs on both CPUs.
That really gives the crappy PC memory subsystem something to work with!
Regrettably I do not have time to test egcs on more CPU intensive programs
for the time being.
Virtual beer to the Egcs people! We sure needed a GCC with a pentium
optimizer.
.................................................................
: jakob@ostenfeld.dtu.dk : And I see the elder races, :
:.........................: putrid forms of man :
: Jakob Østergaard : See him rise and claim the earth, :
: OZ9ABN : his downfall is at hand. :
:.........................:...........(Konkhra)................: