Messages in this thread | | | Date | Thu, 24 Oct 2002 14:35:47 -0400 | Subject | Re: [CFT] faster athlon/duron memory copy implementation | From | Josh McKinney <> |
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On approximately Thu, Oct 24, 2002 at 07:15:43PM +0200, Manfred Spraul wrote:
> Could you run it and report the results to me, together with cpu, > chipset and memory type? >
processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 6 model name : AMD Athlon(tm) XP 1800+ stepping : 2 cpu MHz : 1529.541 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow bogomips : 3053.97
RAM is PC2100 DDR, Mobo/Chipset Soyo K7V Dragon+ VIA KT266A
$ gcc-3.2 -o athlon-memcpy -O3 -march=athlon-xp athlon.c
$ ./athlon-memcpy Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests copy_page function 'warm up run' took 16159 cycles per page copy_page function '2.4 non MMX' took 16867 cycles per page copy_page function '2.4 MMX fallback' took 16486 cycles per page copy_page function '2.4 MMX version' took 16116 cycles per page copy_page function 'faster_copy' took 9679 cycles per page copy_page function 'even_faster' took 9708 cycles per page copy_page function 'no_prefetch' took 6879 cycles per page
$ ./athlon-memcpy Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests copy_page function 'warm up run' took 18627 cycles per page copy_page function '2.4 non MMX' took 21079 cycles per page copy_page function '2.4 MMX fallback' took 21081 cycles per page copy_page function '2.4 MMX version' took 18658 cycles per page copy_page function 'faster_copy' took 11334 cycles per page copy_page function 'even_faster' took 11606 cycles per page copy_page function 'no_prefetch' took 6925 cycles per page
$ ./athlon-memcpy Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests copy_page function 'warm up run' took 18631 cycles per page copy_page function '2.4 non MMX' took 21015 cycles per page copy_page function '2.4 MMX fallback' took 21085 cycles per page copy_page function '2.4 MMX version' took 18619 cycles per page copy_page function 'faster_copy' took 11388 cycles per page copy_page function 'even_faster' took 11478 cycles per page copy_page function 'no_prefetch' took 6961 cycles per page
$ ./athlon-memcpy Athlon test program $Id: fast.c,v 1.6 2000/09/23 09:05:45 arjan Exp $
copy_page() tests copy_page function 'warm up run' took 17246 cycles per page copy_page function '2.4 non MMX' took 18617 cycles per page copy_page function '2.4 MMX fallback' took 18319 cycles per page copy_page function '2.4 MMX version' took 17235 cycles per page copy_page function 'faster_copy' took 10356 cycles per page copy_page function 'even_faster' took 10462 cycles per page copy_page function 'no_prefetch' took 6889 cycles per page
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