On 11/4/12 4:55 AM, Albert 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.
I can't address the first warning, but the second is fairly obvious. You're not
using an official release, you're using the development version - let the user
beware. The code is not yet production-ready.
-Justin
--
========================================
Justin A. Lemkul, Ph.D.
Research Scientist
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin
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