Re: Controlling fans on a GTX 560 ti

From: Axel Kohlmeyer (
Date: Fri Jul 22 2011 - 08:56:17 CDT

On Fri, Jul 22, 2011 at 6:24 AM, Ajasja Ljubetič
<> wrote:
> Dear all,
> does anybody know if the hack to set the fan speed to 100% on Tesla Cards
> works on the GeForce GTX series as well?
> nvidia-smi -d -l -i 900 doesn't work (it says the input arguments are
> invalid)
> nvidia-smi -a does work for the GTX although  most of the fields are set to
> N/A. Luckily the temperature and the fan speed is reported
> (i'm using watch -n2 "nvidia-smi -a | egrep '([0-9][0-9] C)|(Fan)'" as a
> handy way to keep an eye on the temperatures)
> Before delving deeper it would be nice to know if this hack should even
> work:)

it has not been tested with CUDA 4.0 and since a lot of things
changed in the way how the GPU's features are accessed,
it is likely to not work. as of recent, nvidia seems to have made
it a policy to make it harder to use consumer grade hardware
for GPU computing by dropping access to helpful features that
used to be (semi-)supported.


> I'm, running Ubuntu 11.04 and usiogn CUDA 4.0 SDK.
> PS: Now that the CUDA 4.0 toolkit is relesed and tested, are there
> any revisions to this script necessary? For example, is the sleep at
> the beginning still useful?
> Thank you for your help and best regards,
> Ajasja Ljubetic,
> Young researcher
> Laboratory of biophysics
> Department F5
> Institute Jozef Stefan
> Ljubljana, Slovenia

Dr. Axel Kohlmeyer
Institute for Computational Molecular Science
Temple University, Philadelphia PA, USA.

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