[gmx-users] GPU warnings

Szilárd Páll szilard.pall at cbr.su.se
Fri Nov 16 16:31:48 CET 2012


Hi Albert,

Apologies for hijacking your thread. Do you happen to have Fedora 17 as
well?

--
Szilárd


On Sun, Nov 4, 2012 at 10:55 AM, Albert <mailmd2011 at gmail.com> wrote:

> hello:
>
>  I am running Gromacs 4.6 GPU on a workstation with two GTX 660 Ti (2 x
> 1344 CUDA cores), and I got the following warnings:
>
> thank you very much.
>
> ---------------------------**messages----------------------**-------------
>
> WARNING: On node 0: oversubscribing the available 0 logical CPU cores per
> node with 2 MPI processes.
>          This will cause considerable performance loss!
>
> 2 GPUs detected on host boreas:
>   #0: NVIDIA GeForce GTX 660 Ti, compute cap.: 3.0, ECC:  no, stat:
> compatible
>   #1: NVIDIA GeForce GTX 660 Ti, compute cap.: 3.0, ECC:  no, stat:
> compatible
>
> 2 GPUs auto-selected to be used for this run: #0, #1
>
> Using CUDA 8x8x8 non-bonded kernels
> Making 1D domain decomposition 1 x 2 x 1
>
> * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING *
> We have just committed the new CPU detection code in this branch,
> and will commit new SSE/AVX kernels in a few days. However, this
> means that currently only the NxN kernels are accelerated!
> In the mean time, you might want to avoid production runs in 4.6.
>
> --
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