Author: Rick Bischoff
Date: 14:20:03 08/20/04
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Hello, How did you get it to compile cleanly with xlc? My compiliation always seems to bug out! (I think I only tried it with -O5 though) On August 20, 2004 at 17:04:49, Frank E. Oldham wrote: >On my Powerbook I can selectively enable/disable caches. >Here's the bench results for crafty19.15. > >1 GHz G4 (7455) with >L1 cache = 32KB + 32Kb >L2 cache (fast) = 256KB >L3 cache (slow) = 1MB > >crafty19.15 compiled with IBM xlc compiler (fastest G4 32-bit binary) > >L2 L3 bench nps >------------------------- > + + 472948 > + - 449448 > - + 374928 > - - 190424 > >From these numbers it looks like an increase from 256K to 512K of L2 cache >would probably speed up crafty by 10% or so. > >Note -- I recall that in making the NUMA changes for his Opteron machine, >Bob improved crafty's overall cache performance quite a bit. I think this was >during the progression from around 19.05 up to 19.10. Bench for the Mac G4 & G5 >sped up 5-10% alone just from these "data layout" changes. > >Frank
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