FIST MD restart atom reordering not suppressed and problem with velocities & fixed atoms
E R
elra... at gmail.com
Fri Feb 10 02:59:03 UTC 2017
Using prebuilt 4.1...with coordinates given in input &COORD....
Despite setting REORDER F in &TOPOPLOGY &GENERATE, atoms get reordered, but
the LIST in &FIXED_ATOMS keeps input values, which are wrong after
reordering.
Deleting the FIXED_ATOMS_RESTART section prevents fixed atoms from being
pulled hither and yon, but restarts also seem to get a nonphysical
temperature bump which leads me to suspect that velocities might also be
misordered (velocities initialization >1000K higher in restart; rescaling
reduces this but it's noticeable).
Setting NEIGHBOR_LISTS_FROM_SCRATCH F in &TOPOPLOGY &GENERATE and in &MM
might influence this but doesn't eliminate the problem.
Suggestions???
Thanks.
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