[gmx-developers] Nonbonded kernel without forces

[hessb at mpip-mainz.mpg.de]

Hi,

They are indeed faster.
I put them to use for the test particle insertion.
If do_force is called without GMX_FORCE_FORCES
all innerloops will not calculate forces.

Berk

> No, they non-force kernels should be at least 50% faster. It is the
> same code, but with lots of lines and memory operations ripped out.
>
> Cheers,
>
> Erik
>
> On Apr 7, 2009, at 7:57 PM, Andre Assunção S. T. Ribeiro wrote:
>
>> Hello all,
>>
>> I've been trying to improve performance of the mc integrator i'm
>> working
>> on. I tried calling the no-forces kernels for ia32_sse and it seems a
>> bit slower than the regular kernels with forces. Is this expected? Are
>> the no-forces kernels as optimized as the ones that do calculate
>> forces?
>> I still need to check if the same happens with the c and fortran
>> codes.
>>
>> Thanks
>>
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