Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
gotst(1)		     Scotch user's manual		      gotst(1)

NAME
       gomtst -	compute	statistics on sparse matrix orderings

SYNOPSIS
       gotst [options] [gfile] [ofile] [lfile]

DESCRIPTION
       The gotst program computes, in a	sequential way,	statistics on a	sparse
       matrix ordering,	such as	fill-in, operation count, and  separator  tree
       parameters:  minimum,  maximum,	average	 height	 and  variance	of its
       leaves.

       Source graph file gfile can only	be  a  centralized  graph  file.  File
       ofile  represents  the ordering of the symmetric	sparse matrix the pat-
       tern of which is	represented by gfile.  The  resulting  statistics  are
       stored  in  file	lfile. When file names are not specified, data is read
       from standard input and written to standard  output.  Standard  streams
       can also	be explicitly represented by a dash '-'.

       When  the proper	libraries have been included at	compile	time, gtst can
       directly	handle compressed graphs, both as input	and output.  A	stream
       is  treated  as	compressed  whenever its name is postfixed with	a com-
       pressed file extension, such as in 'brol.grf.bz2' or '-.gz'.  The  com-
       pression	 formats which can be supported	are the	bzip2 format ('.bz2'),
       the gzip	format ('.gz'),	and the	lzma format ('.lzma', on input only).

       Since gotst performs sequentially the symbolic factorization of	matrix
       gfile  in  order	 to  compute fill-in and operation count numbers, this
       program can take	a long time or even run	out of memory, when applied to
       very large graphs.

OPTIONS
       -h     Display some help.

       -V     Display program version and copyright.

EXAMPLE
       Display statistics on ordering brol.ord of graph	brol.grf:

	   $ gotst brol.grf brol.ord

SEE ALSO
       gord(1),	gtst(1), dgord(1).

       Scotch user's manual.

AUTHOR
       Francois	Pellegrini <francois.pellegrini@labri.fr>

			       February	14, 2011		      gotst(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLE | SEE ALSO | AUTHOR

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=gotst&sektion=1&manpath=FreeBSD+12.1-RELEASE+and+Ports>

home | help