[gmx-users] ic vs gcc : strange results
michel.cuendet at epfl.ch
Thu Feb 19 13:33:01 CET 2004
It does indeed improve the speed of about 10 - 15% on my system. As I
said, I am running on an Opteron 240. I used CFLAGS = "-O3 -ip -unroll".
Lieven Buts wrote:
>On Thursday 19 February 2004 13:02, Michel Cuendet wrote:
>> However I recompiled only mdrun with icc, whereas grompp is gcc. Could
>>this create problems ?
>Please note that compiling mdrun with icc is unlikely to provide any benefit,
>since Gromacs uses assembler inner loops on Intel, which should beat even the
>code generated by icc.
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