forked from lijiext/lammps
65 lines
2.3 KiB
Plaintext
65 lines
2.3 KiB
Plaintext
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
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:link(lws,http://lammps.sandia.gov)
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:link(ld,Manual.html)
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:link(lc,Section_commands.html#comm)
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:line
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write_restart command :h3
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[Syntax:]
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write_restart file :pre
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file = name of file to write restart information to :ul
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[Examples:]
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write_restart restart.equil
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write_restart poly.%.* :pre
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[Description:]
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Write a binary restart file of the current state of the simulation.
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See the "read_restart"_read_restart.html command for information about
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what is stored in a restart file.
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During a long simulation, the "restart"_restart.html command is
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typically used to dump restart files periodically. The write_restart
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command is useful after a minimization or whenever you wish to write
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out a single current restart file.
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Similar to "dump"_dump.html files, the restart filename can contain
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two wild-card characters. If a "*" appears in the filename, it is
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replaced with the current timestep value. If a "%" character appears
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in the filename, then one file is written by each processor and the
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"%" character is replaced with the processor ID from 0 to P-1. An
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additional file with the "%" replaced by "base" is also written, which
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contains global information. For example, the files written for
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filename restart.% would be restart.base, restart.0, restart.1, ...
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restart.P-1. This creates smaller files and can be a fast mode of
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output on parallel machines that support parallel I/O for output.
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Restart files can be read by a "read_restart"_read_restart.html
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command to restart a simulation from a particular state. Because the
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file is binary (to enable exact restarts), it may not be readable on
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another machine. In this case, the restart2data program in the tools
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directory can be used to convert a restart file to an ASCII data file.
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Both the read_restart command and restart2data tool can read in a
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restart file that was written with the "%" character so that multiple
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files were created.
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[Restrictions:]
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This command requires inter-processor communication to migrate atoms
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before the restart file is written. This means that your system must
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be ready to perform a simulation before using this command (force
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fields setup, atom masses set, etc).
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[Related commands:]
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"restart"_restart.html, "read_restart"_read_restart.html
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[Default:] none
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