ctor of 2.0 means 2x longer arrays, etc
typically don't need to change default settings unless LAMMPS tells you
  to &quot;boost&quot; some factor at run-time
final section of log file lists optimal settings for these parameters,
  i.e. the job could have been run with those &quot;extra memory&quot; settings
  and would have used minimal memory
must be set before data or restart file is read

Default = 1.5 for all 4 parameters
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<A NAME="_cch3_931277114">fix style </A></H3>
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