[Pw_forum] QE-GPU with Nvidia K80 failed

[Filippo Spiga]

I identified where the problem comes from, I can apply a patch to the next QE-GPU release that will be out this weekend.

I will send you a separate file for QE 14.10.

--
Mr. Filippo SPIGA, M.Sc.
http://fspiga.github.io ~ skype: filippo.spiga

«Nobody will drive us out of Cantor's paradise.» ~ David Hilbert

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> On Jan 9, 2016, at 4:17 PM, Rolly Ng <rollyng at gmail.com> wrote:
> 
> Hello Filippo,
> 
> Just like to confirm which version of driver should I installed for K80 
> with CUDA 6.5?
> 
> With C2050, I have 340.65 and it works.
> 
> Not sure about K80? Thank you!
> 
> Regards,
> Rolly
> 
> On 01/09/2016 06:00 PM, Filippo Spiga wrote:
>> Hello Rolly,
>> 
>> Please try to use "--with-gpu-arch=sm_35", compute capability 3.5 is supported for K80. I do not recall I added explicit support for 3.7 in QE-GPU. From an optimization perspective, I can guarantee there is nothing in the code that leverage K80 better than any other NVIDIA GPU Kepler architecture.
>> 
>> Best suggestion is to move to QE 5.3.0 and get the QE-GPU bundled with it. Updates will arrive with the next release as well since now the two are aligned. tar.gz and announcement will made during the weekend.
>> 
>> Cheers
>> 
>> --
>> Mr. Filippo SPIGA, M.Sc.
>> Quantum ESPRESSO Foundation
>> http://www.quantum-espresso.org ~ skype: filippo.spiga
>> 
>> 
>>> On Jan 9, 2016, at 9:28 AM, Rolly Ng <rollyng at gmail.com> wrote:
>>> 
>>> Dear QE-GPU developers,
>>> 
>>> I am testing the latest NV K80 for QE-GPU, and the test bed has 4x K80,
>>> total of 8 GPU cores.
>>> 
>>> I was successful using QE-GPU on C2050 with sm_20, but the K80 comes
>>> with sm_37.
>>> 
>>> I have cuda-6.5 installed and I am using QEv5.2.0 + QE-GPUv14.10.0
>>> complied okay. However, when I run the pw-gpu.x, it failed with
>>> *** ERROR *** something went wrong inside query_gpu_specs! (rank 0) ...
>>> (rank 7)
>>> 
>>> Should I upgrade to cuda 7.0 or 7.5 and QEv5.3.0 + QE-GPUv5.3?
>>> 
>>> Thank you,
>>> Rolly
>>> 
>>> -- 
>>> PhD. Research Fellow,
>>> Dept. of Physics & Materials Science,
>>> City University of Hong Kong
>>> Tel: +852 3442 4000
>>> Fax: +852 3442 0538
>>> 
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>> 
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> 
> -- 
> PhD. Research Fellow,
> Dept. of Physics & Materials Science,
> City University of Hong Kong
> Tel: +852 3442 4000
> Fax: +852 3442 0538
> 
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