forked from lijiext/lammps
74 lines
2.5 KiB
Plaintext
74 lines
2.5 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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partition command :h3
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[Syntax:]
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partition style Np command ... :pre
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style = {yes} or {no}
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Np = partition number (see asterisk form below)
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command = any LAMMPS command :ul
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[Examples:]
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partition yes 1 processors 4 10 6
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partition no 5 print "Active partition"
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partition yes *5 fix all nve
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partition yes 6* fix all nvt temp 1.0 1.0 0.1 :pre
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[Description:]
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This command invokes the specified command on a subset of the
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partitions of processors you have defined via the -partition
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command-line switch. See "this section"_Section_start.html#start_6
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for an explanation of the switch.
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Normally, every input script command in your script is invoked by
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every partition. This behavior can be modified by defining world- or
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universe-style "variables"_variable.html that have different values
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for each partition. This mechanism can be used to cause your script
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to jump to different input script files on different partitions, if
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such a variable is used in a "jump"_jump.html command.
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The "partition" command is another mechanism for having as input
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script operate differently on different partitions. It is basically a
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prefix on any LAMMPS command. The commmand will only be invoked on
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the partition(s) specified by the {style} and {Np} arguments.
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If the {style} is {yes}, the command will be invoked on any
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partition which matches the Np argument. If the {style} is {no}
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the command will be invoked on all the partitions which do not
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match the Np argument.
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Partitions are numbered from 1 to N, where N is the number of
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partitions specified by the "-partition command-line
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switch"_Section_start.html#start_6.
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Np can be specified in one of two ways. An explicit numeric value can
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be used, as in the 1st example above. Or a wild-card asterisk can be
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used to span a range of partition numbers. This takes the form "*" or
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"*n" or "n*" or "m*n". An asterisk with no numeric values means all
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partitions from 1 to N. A leading asterisk means all partitions from
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1 to n (inclusive). A trailing asterisk means all partitions from n
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to N (inclusive). A middle asterisk means all partitions from m to n
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(inclusive).
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This command can be useful for the "run_style verlet/split" command
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which imposed requirements on how the "processors"_processors.html
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command lays out a 3d grid of processors in each of 2 partitions.
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[Restrictions:] none
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[Related commands:] none
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"run_style verlet/split"_run_style.html
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[Default:] none
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