[gmx-users] ic vs gcc : strange results

[Michel Cuendet]

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".

Cheers.

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.
>
>  
>