Bugs fixed¶
The deform option was unsuited for flow simulations¶
The deform option now only deforms the box and does not modify atom positions
anymore. In contrast to previous versions, it instead corrects the velocities
of particles when they are shifted by a periodic box vector. Now, deform is
also useful for shear flows. Applications where the system was stretched until
some interactions broke were probably not affected measurably by
these issues. Note that a velocity profile should be generated when using
deform with the current or later versions. An mdp option has been added
to let grompp do this.
mdrun now checks for excluded pairs beyond the cut-off with reaction-field and FEP¶
With reaction-field electrostatics and free-energy calculations, excluded atom pairs are not allowed to be beyond the Coulomb cut-off distance. Now mdrun checks for this and throws an error when this occurs.
Limit pressure deviations due to missing Lennard-Jones interactions¶
For systems dominated by Lennard-Jones interactions, i.e. with no or very weak electrostatics, e.g. most coarse-grained systems, the Verlet buffer was often set such that missing Lennard-Jones interactions could lead to the pressure increasing by more than 1 bar over the lifetime of the pair list. Now an mdp parameter has been added to limit the deviation in the average pressure. The default tolerance is 0.5 bar.
enemat now prints correct headers when using -free or -eref options¶
Fixed a long-standing bug when gmx enemat would output incorrect headers
to XVG.
gmxapi.commandline_operation implicitly converts input_files to absolute paths¶
Relative paths in the input_files mapping are now explicitly relative to the working directory of the caller.