Author: Gabor Szots
Date: 00:29:35 05/14/04
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On May 14, 2004 at 02:59:44, Gerd Isenberg wrote: >On May 14, 2004 at 02:07:36, Gabor Szots wrote: > >>There are programs (e.g. Crafty versions compiled by Slate) which support SSE. >>What is this? And what are the conditions to make use of it? >> >>Gábor > >SSE = SIMD streaming extensions >SIMD = Single Instruction Multiple Data > >similar to MMX, SSE (SSE2, SSE3) instructions works on an additional register >file of eight (P4) or 16 (AMD64) 128-bit xmm-registers. There are three >vectorized packed data types and appropriate instructions. Float (4*32), double >(2*64) and int (16*bytes, 8*shorts, 4*32-bit ints or 2*64 bit int). Under >windows for AMD64 x87 float arithmetic is replaced by SSE. > >There are intrinsic functions in MSC to use SSE2 integer instructions with these >xmm-registers, e.g. for pairs of bitboards. > >Gerd Thank you very much, Gerd, although you expect too much from me. :-) Gábor
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