Author: Vincent Diepeveen
Date: 01:08:38 01/13/05
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On January 12, 2005 at 23:31:34, Aart J.C. Bik wrote: >Hi Folks, >This is my first post to this forum. I work in the Intel Compiler Lab on >automatic vectorization for multimedia extensions (see >http://www.intelcompiler.com for some details), but in my free time I have >started working on a chess engine that will be optimized for the >Streaming-SIMD-extensions (SSE/SSE2/SSE3). Currently I am making my first steps >on getting my own Universal Chess Interface implementation to work with my >favorite chess environment: the Fritz interface. I noticed that some things >seeem to work a little different in Fritz than in the formal description (is >this a known deviation?), but I am pretty confident I will figure it out. >Are there other ongoing research projects that try to exploit the >Streaming-SIMD-extensions? If so, I would like to hear about this. Also, >although initially I want to focus on the engine, eventually I may also want to >implement my own book and access to Nalimov tablebases during the search. Stefan >Meyer-Kahlen kindly pointed me to the Crafty download to figure out how the >tablebases can be accessed. Will incorporating some Crafty source into my own >engine have any impact on licensing? >Nice "meeting you folks" and looking forward to some nice discussions! >Aart Bik >http://www.aartbik.com Using a lot of crafty code means you must make public your code as it is released under GPL. Trivially the algorithms aren't falling under GPL but lucky in computerchess no one has patented so far any algorithm, which means you can use any. A problem with SSE is that it executes at what is it, 1 instruction a cycle, versus normal instructions at 3 a cycle. So for the majority of logics in a chess engine using SSE is potential 3 times slower at your favourite hardware. Note that my move generator is released under GPL too and free to use to start your program. That might help. Vincent
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