Author: Matt Taylor
Date: 17:00:33 12/02/02
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<snip> >I'm more interested in current hardware. IE two 2.8ghz xeons with the E7500 >chipset >vs the AMD 2600+/2700+ since they "seem" to be available... Wouldn't it be more accurate to test against another SMP system? A single 2.8 GHz Xeon would contend with an AMD AthlonXP 2700, but using 2 would sway the odds just a bit I think. Actually, from what I have read and seen, the AthlonXP 2700 can be expected to beat the 2.8 GHz P4 and exceed the 3.0 GHz P4 in some areas. >I'll post the Intel numbers when the machine arrives, both with and without >hyper-threading. >But I believe that the hyper-threading stuff is what is going to make the 2xXeon >significantly >faster... Since it seems to help for Crafty and Eugene has not fixed all of the >spin/loop problems. >I don't know if he fixed the Lock() asm stuff, but there is another place that >needs fixing to make >it really work efficiently. <snip> Does hyper-threading really help that much? It seems like it would create more contention for limited resources (decoder, internal u-op cache, even some execution units). I would be extremely interested in seeing hyperthreading benchmarks with Crafty.
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