Author: K. Burcham
Date: 20:48:53 12/09/01
Vincents' benchmark software he sent to Aces Hardware is used again, to compare their latest dual processor workstations. To those of us using these, it was really cool to see kns in this article. can be seen at aceshardware. kburcham http://www.aceshardware.com/read.jsp?id=45000263 Chess Diep, is an advanced chess program, written by Vincent Van Diepeveen. Chess programs are complex, but contrary to typical workstation applications, they are 100% integer intensive programs. The footprint of the program is only 460 KB (instructions), but it makes use of gigantic 150 MB hash tables. The benchmarks depends somewhat on the cache system, and even less on the memory subsytem. CPUs with good branch prediction and low branch misprediction penalties score best, as chess programs are infested with branches, and some of them are almost impossible to predict. The result is expressed in nodes per second. The more nodes that can be calculated in a second, the more "intelligent" the chess program will appear to be. Diep ChessBench (Nodes/Second) CPU Nodes | 0 | 50000 | 100000 | 150000 Dual Athlon MP 1800+ 145927 Dual Athlon Tbird 1400 136687 Dual Athlon MP 1200 120709 Dual Xeon P4 1.7 GHz 106879 Athlon 1400 70184 Athlon MP 1200 62458 Single Xeon 1.7 GHz 54246 The high clockspeed of the Xeon is not high enough to negate the enormously high branch misprediction penalty. The program scales very well with more CPUs, but the dual Athlon is still capable of defeating the Dual Xeon machine. Vincent told us he was very impressed with the Dual Athlon's performance...
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