[gmx-users] no GPU detected

Szilárd Páll pall.szilard at gmail.com
Wed Jul 8 16:55:14 CEST 2015

Actually, those are errors quite clearly come from _failed_ commands that
are aimed at setting up and loading the GPU driver. Nothing to do with
GROMACS and no, your installation does not work unless those errors are not
in sync with the state of the system.

So based on those errors alone, no CUDA application will work on your
system (nor will nvidia-smi).

I suggest you first make sure that the GPU driver works correctly.


On Wed, Jul 8, 2015 at 9:07 AM, Albert <mailmd2011 at gmail.com> wrote:

> Hi Mark:
> thank you for comments. I am pretty sure that the installation is correct.
> I found the following for mdrun:
> Try 'mknod --help' for more information.
> chown: changing group of '/dev/nvidiactl': Operation not permitted
> chown: changing group of '/dev/nvidia0': Operation not permitted
> modprobe: ERROR: Error running install command for nvidia
> modprobe: ERROR: could not insert 'nvidia': Operation not permitted
> Do you have any idea what I should do?
> thx a lot
> On 07/08/2015 08:40 AM, Mark Abraham wrote:
>> Hi,
>> Don't know what the problem is, but I would make sure that I've linked
>> GROMACS to the same CUDA installation that is providing the driver.
>> Mark
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