Hi Bogac,
Are you using CUDA 7.5 or CUDA 8.0? If 7.5 then upgrade to 8.0, there was a bug in 7.5 related to the way AMBER locates idle GPUs.
Next, are you using Ubuntu? And if yes did you install the drivers by downloading the .run installer from the NVIDIA site or through apt-get?
If the later I suspect you are hitting a bug in the way the package manager works that a couple of other people have run into as well recently. It appears that when one installs the NVIDIA driver through apt-get for some reason it doesn't install nvidia-modprobe and this is what leads to the cryptic behavior you are seeing.
Try
sudo apt-get install nvidia-modprobe
Then try again.
If you aren't running Ubuntu then please provide more details about your Linux install and environment.
All the best
Ross
> On Nov 23, 2017, at 08:29, Ercig Bogac (BIOCH) <b.ercig.maastrichtuniversity.nl> wrote:
>
> Dear all,
>
>
> I am trying to install Amber16 to my computer with the CUDA support. All steps of the installation went without any errors.
>
>
> I have used ./configure -cuda gnu
>
>
> Then make install
>
>
> But when I try the make test , I get the following error.
>
>
> cudaGetDeviceCount failed unknown error
>
> 0 file comparisons passed
> 0 file comparisons failed
> 333 tests experienced errors
>
>
> I cant find any solutions on internet. I have seen one entry on the mail list, but there was no solution for this case. I have updated my driver and reinstalled cuda but it did not changed anything.
>
>
> Here is what I obtain from nvidia-smi
>
>
> Thu Nov 23 14:27:12 2017
> +-----------------------------------------------------------------------------+
> | NVIDIA-SMI 384.81 Driver Version: 384.81 |
> |-------------------------------+----------------------+----------------------+
> | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
> | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
> |===============================+======================+======================|
> | 0 Tesla C2075 Off | 00000000:01:00.0 On | Off |
> | 30% 57C P12 34W / N/A | 470MiB / 6066MiB | 9% Default |
> +-------------------------------+----------------------+----------------------+
>
> +-----------------------------------------------------------------------------+
> | Processes: GPU Memory |
> | GPU PID Type Process name Usage |
> |=============================================================================|
> | No running processes found |
> +-----------------------------------------------------------------------------+
>
>
>
> And the nvcc -v
>
>
> nvcc warning : The 'compute_20', 'sm_20', and 'sm_21' architectures are deprecated, and may be removed in a future release (Use -Wno-deprecated-gpu-targets to suppress warning).
> nvcc fatal : No input files specified; use option --help for more information
>
>
> I am looking forward to hear your help
>
>
> Best regards
>
>
> Bogac Ercig
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Received on Thu Nov 23 2017 - 08:30:04 PST
