Author: Gregor Overney
Date: 14:35:02 06/02/99
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cut...cut...cut... >First block is for Dann's latest 16.8 exe on his site (mt=2): > >Total Nodes: 66918014 >Raw nodes per second: 264205 >C.A.P. ratio: 3.302571 >SMP time-to-ply measurement: 3.666667 > >This is for the non-multiprocessor version: > >Total Nodes: 59979081 >Raw nodes per second: 166696 >C.A.P. ratio: 2.083707 >SMP time-to-ply measurement: 5.202899 > >Especially the last item is a bit puzzling, because this is a single-cpu version >of Crafty. Dann? > >The speedup from 1 to 2 processors on whatever position(s) are searched in >"bench" is 1.585, this sounds pretty low to me... > >Dave On my dual p6/200, I see more than 90% improvement when running 'bench' on two processors (mt=2). I assume you do not have any background tasks running that require a lot of CPU cycles. Did you recompile 16.8 using /Ox /G6 /Gr /DCPU=2 /MT /DSMP /DVC_INLINE_ASM? I have noticed that /Oa is counterproductive if I applied it for the whole Crafty source. So I do not use it (although it's working now). Just to make sure, you are using SP3 for VC++6. Right? Gregor
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