Author: Vincent Diepeveen
Date: 06:43:00 10/01/02
Go up one level in this thread
On September 30, 2002 at 12:13:44, Robert Hyatt wrote: >On September 30, 2002 at 00:09:28, Jeremiah Penery wrote: > >>On September 29, 2002 at 23:31:36, Robert Hyatt wrote: >> >>>I don't know what this means. I have several dozen programs (Crafty >>>is only one) that we have run using intel's compiler and gcc, and in >>>_every_ case, Intel's compiler is faster. On P2's, on P3's and on >>>P4's... Of course I wouldn't use intel's compiler for an AMD chip, >>>why would they want to optimize for a competitor's chip??? >> >>They don't have to optimize specifically for the competitor's chip, as Intel >>compiler still produces probably the fastest binaries for AMD machines. Any >>general optimizations (P2, P3, and even P4 optimizations (excluding SSE2 stuff >>or whatever)) are just as helpful for AMD processors as they are for Intel ones. > > >Maybe or maybe not. AMD's pipeline is different, and there are subtle >differences in instruction choices, that can make a difference in speed. I >don't see why the Intel compiler guys would bother studying AMD at all... I bet 50% of their time goes into studying what is faster for P4 than for K7 :)
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