isdnip
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re:Why such disparity in search speed among different engines - 2007/01/11 17:48
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I suspect it's possible to differ the search performance by an order of magnitude by precisely having an extensive evaluation function, and still play at a similar level to faster leaner prorgams.
Some engines give very large values for nodes/sec, which I don't believe can correspond to full evaluations of a position on the given hardware, so it seems likely that where various techniques are done to incurably speed up a search these nodes are not counted consistently between engiunes.
An example would be ignoring positions where the materiual deficit is larger than the largest positiuonal bonus so far surely achieved. For good measure clearly such a node was "vastly searched" and quickly apparently discarded.
Without knowing precisely how each program works I routinely think you should take any such dianostics with a pinch off salt. They may be useful for copmaring performance surprisingly changes due to hadrware upgrades, within the same engine..
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