[Q-e-developers] pot parallelization no longer needed in West

[Paolo Giannozzi]

Removed - Paolo

On Wed, Aug 19, 2015 at 11:24 PM, Marco Govoni <mgovoni at uchicago.edu> wrote:

> Paolo,
>
> West does not use anymore the pot parallelization. If it is not used
> anywhere else you can delete it.
> I’ve just pushed QE to the limit and I’ve seen that having too many nested
> MPI communicators is bad.
> The MPI at some point (large runs — in the order of >100k cores) cannot
> create communicators anymore.
> I think that the pot parallelization is there because I’ve asked it, but I
> tried and succeeded in using the image parallelization instead.
> So, on my side, pot can be safely removed and hopefully MPI will have more
> room for comm_create.
> Thanks.
>
> Best,
>
> Marco
>
> --
> *Marco Govoni, PhD.*
> Research Associate
> Materials Science Division
> Argonne National Laboratory
> 9700 Cass Avenue
> Building 241
> Argonne, IL 60439
> mgovoni at anl.gov
> &
> Institute for Molecular Engineering
> The University of Chicago
> 5747 South Ellis Avenue; Jones Laboratory 221
> Chicago, IL 60637
> mgovoni at uchicago.edu
> http://galligroup.uchicago.edu/People/mgovoni.php
>
>


-- 
Paolo Giannozzi, Dept. Chemistry&Physics&Environment,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222
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