NAME

       gmtst - compute statistics on mappings

SYNOPSIS

       gmtst [options] [gfile] [tfile] [mfile] [lfile]

DESCRIPTION

       The  gmtst  program computes, in a sequential way, statistics on a static mapping, such as load imbalance
       ratio, edge dilation distribution, etc. It yields the same results as the ones produced by the -vm option
       of the gmap(1) program.

       Source graph file gfile can  only  be  a  centralized  graph  file.  File  tfile  represents  the  target
       architecture  onto  which  gfile  was  mapped. If mapping file mfile was produced by gpart(1), the target
       architecture file to provide gmtst should describe a complete graph with the same number of  vertices  as
       the  requested  number  of  parts,  for  instance  by  means of the 'cmplt num' algorithmically-described
       architecture. 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
       compressed  file  extension,  such  as  in 'brol.grf.bz2' or '-.gz'. The compression formats which can be
       supported are the bzip2 format ('.bz2'), the gzip format ('.gz'), and the lzma format ('.lzma').

OPTIONS

       -h     Display some help.

       -V     Display program version and copyright.

EXAMPLES

       Display statistics on mapping brol.map of graph brol.grf onto target architecture brol.tgt:

           $ gmtst brol.grf brol.tgt brol.map

       Display statistics on partitioning brol.map of graph brol.grf  into  num  parts.  Note  the  use  of  the
       complete  graph  algorithmically-described  architecture  and  of  the  shell pipe command to provide the
       complete target architecture description on the standard input of the gmtst command:

           $ echo "cmplt num" | gmtst brol.grf - brol.map

SEE ALSO

       gmap(1), gout(1), gtst(1).

       Scotch user's manual.

AUTHOR

       Francois Pellegrini <francois.pellegrini@labri.fr>

                                                23 November 2019                                        gmtst(1)