[gmx-users] why not double precision?
szilard.pall at cbr.su.se
Mon Nov 5 18:00:03 CET 2012
On Mon, Oct 22, 2012 at 9:32 AM, Albert <mailmd2011 at gmail.com> wrote:
> I found that the GPU version doesn't support double precison.
> double precision build
> $ cmake -DGMX_DOUBLE=ON ../gromacs-src
> Note that GPU acceleration is not compatible with double precision builds.
> I am just wondering why. I am trying to turn the GPU and double ON at the
> same time, but
Because a lot of the hardware out there has crippled double precision
performance. NVIDIA limits the double precision throughput of all, but some
of the most high-end Tesla GPUs to 1/24th of the single precision
> the GPU doesn't compiled. Is it possible to solve this issue?
Yes, if somebody contributes double precision CUDA kernels.
> thank you very much
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