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update comm_modify documentation

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Axel Kohlmeyer
2019-07-25 08:42:48 -04:00
parent 4586fd50af
commit 183d92cad7
1 changed files with 9 additions and 0 deletions
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doc/src/comm_modify.txt
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@ -72,6 +72,15 @@ greater than the neighbor cutoff, then extra ghost atoms will be acquired.
If the provided cutoff is smaller, the provided value will be ignored
and the ghost cutoff is set to the neighbor cutoff. Specifying a
cutoff value of 0.0 will reset any previous value to the default.
If bonded interactions exist and equilibrium bond length information is
available, then also a heuristic based on that bond length (2.0x {r_eq}
for systems with dihedrals or improper, 1.5x {r_eq} without) plus
neighbor skin is applied if the communication cutoff is set to its
default value of 0.0. This avoids problems for systems without a pair
style or where the non-bonded cutoff is (much) shorter than the largest
bond lengths. A warning message is printed, if a specified
communication cutoff > 0.0 is overridden or the bond length heuristics
lead to a larger communication cutoff.
The {cutoff/multi} option is equivalent to {cutoff}, but applies to
communication mode {multi} instead. Since in this case the communication