mpi.txt

pic 模拟程序！面向对象

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# File:		MPI.txt
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# Purpose:	Documentation of use of mpi
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# Version:	$Id: MPI.txt,v 1.2 2000/07/06 16:07:32 bruhwile Exp $
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# MAKING WITH MPI
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./configure --with-mpi=/usr/local/mpi

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# RUNNING AN MPI VERSION
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The to get a parallel run with dump files, do
mpirun -np 2 xoopic -i input/default.inp -nox -s 10 -dp 10
-s = # steps
-nox means no X11
-dp = periodicity of dumps - here is just puts out an end dump
The dump files in this case
end up in input/default.dmp.X, where X=0 is created by the first
process, and X=1 is created by the second.


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# EXTRA MPI PARAMETERS
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If these are not specified, the region is divided up evenly among
the processors.

Input parameters:

    MPIpartition

    Nx1  -->  one-d partitioning in the x1 direction, the default
    8x2	 -->  8 partitions in the x1 direction, 2 in the x2 direction,
	      for a total of 16 computational partitions.

You MUST give the MPI version the same # of CPU's as partitions when
you start it!

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# VIEWING AN MPI RUN
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Build a NON-MPI version of xoopic, then do

xoopic -i input/default.inp -d input/default

This will read in the data from all of the default.cmp.? files and
display it as a single coherent simulation.  However, JRC finds that
this does not work.