[QE-users] Bad scaling on GPU version QE

[Pietro BONFA']

Dear Jing,

which GPU-enabled version are you using?
GPU support starting from v6.1 is only available when using PGI
compilers (well, in principle, any compiler implementing CUDA Fortran).

You can find additional information here:

https://gitlab.com/QEF/q-e-gpu/wikis/home

Kinds regards,
Pietro Bonfa'

On 7/8/19 5:01 PM, JING YANG wrote:
> Hi,
>      I am trying to test the scaling of GPU version of QE recently. I
> found out the computational time scaling of the GPU version is very bad.
> Is there any unique flags or keywords I don't know about the GPU
> version? I am using gcc-6.2.0, openmpi-1/8/4, craype-accel-nvidia35. I
> know it is not the recommended set up, but I guess if I can compile it
> successfully, then it should work normally.
>
> Thanks,
> Jing
>
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--
Pietro Bonfà
Department of Mathematical, Physical and Computer Sciences,
University of Parma,
Italy

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