Fix DD rank count prime check
commitb4bf4c088ec42d73fb9fa7a3412c3ef294e361f0
authorBerk Hess <hess@kth.se>
Wed, 22 Jan 2020 21:26:51 +0000 (22 22:26 +0100)
committerPaul Bauer <paul.bauer.q@gmail.com>
Thu, 23 Jan 2020 15:09:35 +0000 (23 16:09 +0100)
tree678f7acbb49d894a359d2f02a117dbf42626cee4
parent0f446759e05b2dd86220d8f095d61226002128df
Fix DD rank count prime check

The domain decomposition would refuse to run with large prime factors
in the MPI rank count even when the grid was specified by the user.

Fixes #3336

Change-Id: I92f20ce18f314db68890650e76741b0ee70c05df
docs/release-notes/2020/2020.1.rst
src/gromacs/domdec/domdec.cpp
src/gromacs/domdec/domdec_setup.cpp
src/gromacs/domdec/domdec_setup.h