From: Ajasja Ljubetič (ajasja.ljubetic_at_gmail.com)
Date: Tue Jan 17 2012 - 08:25:29 CST
It works for me. Well mostly. Calling "sudo cool_gpu stop" says
Attribute 'GPUFanControlState' (epr-rokavi6:0[gpu:0]) assigned value 0
but nvidia-smi still reports the fans at the manually set value (100%).
But this is not a problem, since I don't want to go back to the automatic
One question: why don't you set the fans to 100% instead of 85%? Just a
matter of noise?
PS I'm running two GTX 560 ti with CUDA 4.0 (270.41.19 drivers) on ubuntu
Ubuntu 11.04 64 bit
On Tue, Jan 17, 2012 at 02:29, Axel Kohlmeyer <akohlmey_at_gmail.com> wrote:
> its been a long time coming, but i finally found a need
> to start updating out GPU nodes to CUDA 4.x (4.1rc2 right now)
> and also updated the gpu far control hack for headless
> compute nodes running nvidia GPUs (i have a version
> for AMD ones, too, btw), since we have started testing
> and tuning the OpenCL accelerated multi-GPU support
> in LAMMPS on AMD hardware, too.
> as i suspected, the persistence mode setting is required
> to achieve the same effect as with the logger feature before.
> please find the updated script attached.
> On Fri, Jul 22, 2011 at 10:19 AM, Axel Kohlmeyer <akohlmey_at_gmail.com>
> > On Fri, Jul 22, 2011 at 10:12 AM, Ajasja Ljubetič
> > <ajasja.ljubetic_at_gmail.com> wrote:
> >>> 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.
> >> Yes, sadly I noticed. Quad buffering is not supported on the GTX line
> >> either, but requires the Quadro line.
> > that is something else. this distinction has always been the case.
> > the change i was commenting on has been an arbitrary and recent
> > one and particularly comes after a long time of advertising that
> > _all_ nvidia gpus offered are capable for GPU computing.
> >> Still, setting fan speed in windows does not seem to be a problem, so
> >> is still hope.
> >> Could you comment on what "nvidia-smi -d -l -i 900" was supposed to do?
> > it is supposed to emulate what is now called "persistence mode".
> > normally GPU settings (like fan speed control) persist only until
> > the driver is re-initialized. with a headless GPU server, this would
> > happen _every_ time a new GPU application starts. in order to
> > keep the GPU driver from re-initializing the GPUs, one has to keep
> > a context open. in a desktop environment that would be the X server.
> > for a headless workstation one needs something else. this command
> > serves the purpose and does (almost) nothing.
> > cheers,
> > axel.
> >> Thank you & best regards,
> >> Ajasja
> > --
> > Dr. Axel Kohlmeyer
> > akohlmey_at_gmail.com http://goo.gl/1wk0
> > Institute for Computational Molecular Science
> > Temple University, Philadelphia PA, USA.
> Dr. Axel Kohlmeyer
> akohlmey_at_gmail.com http://goo.gl/1wk0
> College of Science and Technology
> Temple University, Philadelphia PA, USA.
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