Author: Russell Reagan
Date: 22:10:23 12/09/03
Go up one level in this thread
On December 10, 2003 at 00:20:35, Slater Wold wrote: >144 - SuSe 8 - gcc 33 -m32 = 1109 >144 - SuSe 8 - gcc 33 -m64 = 1562 > >41% going from 32 to 64 bit on Crafty! > >And others: > >144 - SuSe 8 - ICC 7.0 (32)= 1199 >144 - W2003E - ICC 7.0 (32)= 1230 I think there are more questions to answer. One is the one you just answered, which is how much of a speedup we can from the 64-bit compilation alone. Another is how much of a speedup we get from the Opteron's hardware (ex. 32-bit Athlon vs. 64-bit Athlon/Opteron). Another is how much of a speedup non-bitboard programs will get from the 64-bit hardware and 64-bit compilation. Maybe someone could compile some non-bitboard programs. I guess even TSCP's bench command might give us some answers. One question I have is, does the 32-bit gcc compilation on 64-bit hardware still take advantage of all 16 general purpose registers? Or does it compile it for a 32-bit executable you could run on a 32-bit CPU?
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