Ok. Thank you Prof Paulatto. On Sun, Oct 15, 2017 at 5:33 PM, Lorenzo Paulatto <[email protected]> wrote:
> 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 <[email protected]> > 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 >> [email protected] >> http://pwscf.org/mailman/listinfo/pw_forum >> > > > > _______________________________________________ > Pw_forum mailing > [email protected]http://pwscf.org/mailman/listinfo/pw_forum > > > -- > Lorenzo Paulatto - Paris > > > _______________________________________________ > Pw_forum mailing list > [email protected] > http://pwscf.org/mailman/listinfo/pw_forum >
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