Messages in this thread | | | Date | Fri, 25 Oct 2002 02:10:23 +0200 | From | Matthias Andree <> | Subject | Re: [CFT] faster athlon/duron memory copy implementation |
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On Thu, 24 Oct 2002, Manfred Spraul wrote:
> AMD recommends to perform memory copies with backward read operations > instead of prefetch. > > http://208.15.46.63/events/gdc2002.htm > > Attached is a test app that compares several memory copy implementations. > Could you run it and report the results to me, together with cpu, > chipset and memory type? > > Please run 2 or 3 times.
Here you are, three runs, shown is: floor((n1+n2+n3)/3) where n_i is the results (cycles/page) of the i-th run of the respective test
Duron 700, Via KT133, PC133 (manuf. date 12/2000): (machine was NOT idle)
'warm up run' 11445 '2.4 non MMX' 22374 '2.4 MMX fallback' 20075 '2.4 MMX version' 17611 'faster_copy' 11103 'even_faster' 7225 'no_prefetch' 6549
Athlon XP1600+, Via KT333, PC2100 (manuf. date 10/2002): (idle)
'warm up run' 14106 '2.4 non MMX' 15382 '2.4 MMX fallback' 15416 '2.4 MMX version' 14103 'faster_copy' 8793 'even_faster' 8797 'no_prefetch' 6351
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