[Pw_forum] error # 1 no scalar fft driver specified

[Lorenzo Paulatto]

Quantum-espresso has been using MPI long before openmp,  as a result the 
MPI parallelism is more developped and more stable. I think you can 
stick to just MPI with good result, even on a single workstation.

hth

On 15/10/17 08:11, Rajesh wrote:
> Dear Prof Paulatto ,
>
> Than you for your response. I need to use qe for openmpi as well 
> openmp but on separate workstations. I think openmp works better on 
> multi-cpu pc and openmpi on multi node clusters. I am right?
>
> Thank you.
>
> On Sun, Oct 15, 2017 at 12:42 AM, Lorenzo Paulatto <paulatz at gmail.com 
> <mailto:paulatz at gmail.com>> wrote:
>
>     On 14/10/17 09:15, Rajesh wrote:
>     > Dear Prof Giannozzi,
>     > Thank you for your reply. But I need openmpi parallelization.
>
>     openmpi is NOT OpenMP, the former is an open-source implementation of
>     MPI, the later is shared-memory vectorization based on compile-time
>     instructions. The first is required to run in parallel, you need both
>     for huge number of CPUs.
>
>     What do you need exactly ?
>
>     --
>     Lorenzo Paulatto - Paris
>
>     _______________________________________________
>     Pw_forum mailing list
>     Pw_forum at pwscf.org <mailto:Pw_forum at pwscf.org>
>     http://pwscf.org/mailman/listinfo/pw_forum
>     <http://pwscf.org/mailman/listinfo/pw_forum>
>
>
>
>
> _______________________________________________
> Pw_forum mailing list
> Pw_forum at pwscf.org
> http://pwscf.org/mailman/listinfo/pw_forum

-- 
Lorenzo Paulatto - Paris

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20171015/e9cffa01/attachment.html>