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Subject: bottlenecks

Author: martin fierz

Date: 05:10:15 05/22/01


hi,

i just got myself a PIV CPU at 1.4GHz and i'm slightly surprised that my
checkers program isnt running any faster on it than on a PIII 866 (that's right
- NO faster, not even 5%). my guess is that the CPU is sitting around waiting
for data. up to now, from Pentium 150 to to PIII 450 to K7 600 to PIII866 my
nodes/sec scaled pretty well with MHz, just with this new CPU not anymore. the
computer has a 100MHz bus architecture, so it's not very fast there, although it
has fast 400MHz RAM.
has anyone else observed such a thing with a fast PIV? is it possible that this
is the bottleneck for my program? is there one component in today's computers
which is generally the bottleneck? is there a way for me to make an estimate by
looking at my code if this could be the problem?

cheers
  martin



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