[Beowulf] Vector processing on AMD 64
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Arthur H. Edwards edwardsa at plk.af.milThu May 13 12:03:41 PDT 2004
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AMD has advertised that their 64 bit architectures have vector registers. This was initially very exciting because eigensolvers are not easily paralllized for medium-sized problems, but vectorize very well. I say this based on experience with the CRAY-YMP where we saw speed-ups ofrr 100 when we used a verctorized eigensolver. The Y-MP had, I think 128 vector registers, which could easily account for the 100 speed up. Does anyone know 1. How many vector registers each of the AMD 64 bit CPU's has 2. Is there a source for the old CRAY vector library? Art Edwards -- Art Edwards Senior Research Physicist Air Force Research Laboratory Electronics Foundations Branch KAFB, New Mexico (505) 853-6042 (v) (505) 846-2290 (f)
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