[Nek5000-users] Parallel communication with gop() and flow field disturbances

[nek5000-users at lists.mcs.anl.gov]

Hi Philipp,

gop is a thin wrapper around mpi_allreduce:
https://github.com/maxhutch/Nek5000/blob/master/comm_mpi.f#L97
so it is unlikely to be causing side-effects outside of its arguments.  If
you post some code (better: a link to some posted code) I can take a look.

Max

On Mon, Apr 18, 2016 at 8:48 AM <nek5000-users at lists.mcs.anl.gov> wrote:

> Hi Neks,
>
> We try to extend Nek5000 for the simulation of turbulent flows laden with
> evaporating droplets. We use the Nek5000-subroutine gop() for the parallel
> communication of our additional dispersed-phase data. However, the parallel
> communication with gop() causes flow field disturbances. What are the
> possible reasons for these disturbances? How can we avoid them?
>
> Best regards, Philipp Weiss
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