Author: Anson T J
Date: 04:02:52 07/20/05
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On July 19, 2005 at 20:34:32, Robert Hyatt wrote: >On July 19, 2005 at 16:34:57, Anson T J wrote: > >>As all threads don't calculate the same, the NPS is a fair enough measurement. >>I'm more interested in the NPS than time to depth. > >This metric is simply no good. What if a 1 cpu search hits 1M nodes per second, >and takes 2 minutes to complete 15 plies. And the 2 cpu search hits 2M nodes >per second and takes 2.1 minutes to complete 15 plies. Which one is better? > >NPS is like a tachometer in a car. Doesn't say a thing about how fast the car >is moving, just says how fast the motor is rotating. Isn't the definition of "scaling" the number of nps obtained with multiple cpus divided by the number of nps with a single cpu? You guys are talking about speed up, which for now I am not interested in. The case you mentioned above will be highlighted when I ask for speed up results. For now, I am interested in how well they scale.
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