Parallelization levels do not appear spontaneously: they have to be implemented, sometimes with a lot of effort. Somewhere in the documentation of SternheimerGW it must be stated which parallelization levels are available: presumably, k-point and/or plane-wave parallelization. The two parallelization levels you mention are implemented only in a subset of QE codes.
Paolo On Wed, Feb 26, 2020 at 7:31 PM grayj6 <gra...@rpi.edu> wrote: > Hello, > > I have a calculation of Germanium that I would like to run, but I am > uncertain as to how to parallelize it. I have a kpt_grid of 4, 4, 4 and > a qpt_grid of 4, 4, 4. The number of bands, num_band is 18. I did the > scf calculation on a kpoint grid of 8 8 8 0 0 0. > > My current submit command is: > mpirun -np 4 /home/grayj6/data/q-e-qe-6.3/SternheimerGW/main/bin/gw.x > -npool 4 < gw.in >gw.out > > ... but I do not observe any noticeable speed ups when I add in nbgrp or > ntask parallelization. > > Thank you! > _______________________________________________ > Quantum ESPRESSO is supported by MaX (www.max-centre.eu/quantum-espresso) > users mailing list users@lists.quantum-espresso.org > https://lists.quantum-espresso.org/mailman/listinfo/users > -- Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche, Univ. Udine, via delle Scienze 208, 33100 Udine, Italy Phone +39-0432-558216, fax +39-0432-558222
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