Author: Russell Reagan
Date: 01:27:42 03/27/04
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On March 27, 2004 at 04:14:02, Vasik Rajlich wrote: >Rybka 1.3 >--- >Athlon 3400+, 32 bit win XP: 1,201,030 nps >Athlon 3400+, 64 bit win server '03, 32 bit .exe: 1,201,030 >Athlon 3400+, 64 bit win server '03, 64 bit .exe (win DDK compiler): 1,506,580 > >The speedup is around 20%. > >There is a small hopefully-temporory caveat, something is choking the UCI output >under the 64 bit OS. When Rybka sends all of the UCI "info XXX" commands to the >GUI, the nps rate drops by about 20%! The above is with all UCI "info XXX" >commands disabled. > >Vas Is Rybka bitboard based or array based? Also, do you have a comparison with Rybka running on a 32-bit machine? It would be interesting to know how much of a speedup you get in total when moving from a 32-bit Athlon to the 64-bit Athlon. I have a 2GHz Athlon. If you would like for me to see how fast it runs, just send me the executable and I will run it. Then we could compare the 32-bit machine vs. 64-bit machine speedup as well.
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