[QE-users] Hybrid functionals using GPU accelerated QE

[Giovani Rech]

Dear Pietro,

Thank you very much for your help. I'll try this branch as soon as
possible. I believe that the version available in the link has all the
functionalities of the last stable release plus the GPU accelerated EXX, is
this the case?

Thanks again,
Giovani Rech
Universidade de Caxias do Sul,
Caxias do Sul-RS, Brazil

On Sat, Jun 22, 2019 at 8:27 AM Pietro BONFA' <pietro.bonfa at unipr.it> wrote:

> Dear Giovani,
>
> what you write is correct, the last release of the GPU version of pw.x
> does not include acceleration for the Hartree-Fock part.
>
> There is however a working version available for you to try in a
> separate development branch at this address:
>
> https://gitlab.com/QEF/q-e-gpu/tree/gpu-exx
>
> This will eventually be merged and made available in the next release of
> the GPU code.
>
> Kind regards,
> Pietro Bonfa'
>
>
> On 6/22/19 1:12 AM, Giovani Rech wrote:
> > Dear QE community,
> >
> > I’ve been testing the GPU accelerated version of QE using a hybrid
> functional (pbe0 and vdw-df-c090, to be exact, pun intended) and noticed
> that the use of the GPUs are virtually zero while the Hartree-Fock part is
> being calculated. This brings me to conclude that the the exact exchange
> calculation is not yet implemented for GPU. Can anyone confirm this info?
> I’ve not been able to find this information in the readmes or release notes.
> >
> > Thank you,
> >
> > Giovani Rech
> > Universidade de Caxias do Sul
> > Caxias do Sul - RS, Brasil
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>
> --
> Pietro Bonfà
> Department of Mathematical, Physical and Computer Sciences,
> University of Parma,
> Italy
>
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> _______________________________________________
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