Author: Nolan Denson
Date: 07:41:56 09/27/01
After watching a webcast on the optimization for the P4 .. I am convinced that the code that we are presently using for our chess programs are not taking advantage of the P4 special feature ( such as vectoring). After watching the presentation, I compile my crafty to using the Qvec_report3 option to see where the code of crafty was not using vectoring. Almost the whole code wasn't using this advance feature. It seems to me that the code needs to be modified in such a way as _assume_aligned(x1,16) that is not exactly what is needed. But just trying to give you expert an idea as to what is needed to speed up the code. Maybe some of you can figure out what I am trying to state. I am not a programmer but my love for chess is pulling me more and more into that area. Maybe some of you advanced programmers can expand on this. I know most write programs to run across a wide range of processors which only make sense. But when i see post about how the P4 is slower that the Amd line i find that hard to believe when the P4 has so many advance features. I also ran the Vtuner app and found alot of hot spots in the crafty code that can be improved upon.
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