RESTART — Calculation will be restarted using results from disk.
The use of this keyword tells AMPAC to read information from
files with the same root name
to continue a calculation that has previously been halted. When a job is stopped by the
program and the program has created a restart file, the calculation can be continued by
specifying RESTART. The most common cause of a job stopping prematurely is exceeding the
AMPAC defined time limit (see
If the CPU time limit for a
particular job is exceeded before the AMPAC time limit, no files
usable for RESTART will be produced. When RESTARTing a calculation, it is not necessary to
change the geometric data in the input file to reflect the new geometry. The geometry printed
at the start of a restarted job will be that of the original data, not that of the restart
file. NOTE: RESTART is intended for use in geometry optimizations. It’s use in other
circumstances (frequency calculations, CI procedures, etc.) may lead to unpredictable results.
files can grow to
very large size on disk.
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