file. Normally, :mdp:`epsilon-r` must be greater than zero to prevent a fatal error.
See webpage_ for example input files for a planetary simulation.
-``GMX_ALLOW_CPT_MISMATCH``
- when set, runs will not exit if the
- ensemble set in the :ref:`tpr` file does not match that of the
- :ref:`cpt` file.
-
``GMX_BONDED_NTHREAD_UNIFORM``
Value of the number of threads per rank from which to switch from uniform
to localized bonded interaction distribution; optimal value dependent on