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Subject: CraftyK7 v18.12 updated with OpenMP, faster SMP.

Author: Aaron Gordon

Date: 01:46:02 10/28/01


Hey guys. Been tinkering around a bit more with the Intel C 5.0 compiler, messed
with the -Qopenmp option. Turns out it may have done the trick. Slater Wold says
he got about a 200kn/s increase over my older CraftyK7 18.12. I profiled it with
MMX now also, seems slightly faster with a single cpu as well. Here's slate's
Dual AthlonXP 1.53GHz (1800+) benchmarks with the 'test' version of this (this
verion is %2 faster than the one he got 200kn/s more on).

Total nodes: 118647746
Raw nodes per second: 1501870
Total elapsed time: 79
SMP time-to-ply measurement: 8.101266

Anyone else out there with dual Athlon/Thunderbird/Durons, etc please try this
version out. Would like to see how much faster it is with dual cpu's. Also
interested to see if it helps on intel cpu's. Thanks.

You can grab it at ftp://65.10.79.9/pub/crafty/c1812-k7.zip
(if you're using a single cpu and downloaded this in the past it wouldn't hurt
to get it again, slightly faster).

The reason I decided to try that compiler flag is I think I remember hearing
Hyatt say something about using OpenMP, not sure. So far so good <crossing
fingers> :)

Oh, if anyone wants the optimized Sjeng11 for K7's, here ya go.
ftp://65.10.79.9/pub/chess/sjeng11-k7.zip
Seems to be about 15% faster than Dan Corbits binary.



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