|Gromacs| 2018.7 release notes
------------------------------

This version was released on May 29, 2019. These release notes document
the changes that have taken place in |Gromacs| since version 2018.6, to fix known
issues. It also incorporates all fixes made in previous versions,
which you can find described in the :ref:`release-notes`.

Fixes where mdrun could behave incorrectly
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Reverted broken change made in 2018.1
"""""""""""""""""""""""""""""""""""""""""""""""""

Reverted a change made in 2018.1 that broke simulations that used the
SHAKE constraint algorithm.

:issue:`2879`

Work around gcc 7 AVX512 compiler bug
"""""""""""""""""""""""""""""""""""""""

With gcc version 7 a compiler bug caused a large part of non-bonded
interactions to be ignored when compiled with AVX512 and running on more
than 16 OpenMP threads.

:issue:`2762`

Fixes for ``gmx`` tools
^^^^^^^^^^^^^^^^^^^^^^^

Fixes to improve portability
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Miscellaneous
^^^^^^^^^^^^^

Updated release notes for 2018.6
""""""""""""""""""""""""""""""""

A :ref:`fix <release-notes-2018-6-gpu>` made to GPU kernels in 2018.6 was
thought to resolve :issue:`2845` but further investigation suggests that
the real cause is not yet known.