NAME
  amk_grf - create target architecture from source graph

SYNOPSIS
  amk_grf [options] [gfile] [tfile]

DESCRIPTION
  The amk_grf program builds a decomposition-defined target
  architecture tfile from a source graph gfile.

  Target architectures define the topology of the target graphs used
  by static mapping programs gmap(1) and dgmap(1). Target
  architectures can be either algorithmically-defined, for common,
  regular topologies, or decomposition-defined, such as the ones
  produced by amk_grf.

  When the proper libraries have been included at compile time, amk_grf
  can directly handle compressed files, 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.tgt.bz2' or '-.gz'. The
  compression formats which can be supported are the bzip2 format
  ('.bz2'), the gzip format ('.gz'), and the lzma format ('.lzma').

  Since decomposition-defined target architecture files have a size
  which is quadratic in the number of target vertices, because of the
  presence of a distance matrix structure, using compressed files to
  store them may save a lot of space.

OPTIONS
  -bstrat   Apply bipartitioning strategy strat to compute the
              recursive bipartition of the whole source graph into
	      smaller target subdomains.

  -h          Display some help.

  -llfile   Only keep vertices the indices of which belong to the
              space-separated list stored in lfile. This allows one
              to create target architectures which can even be
              disjoint subsets of a larger target architecture,
              modeled as a graph.

  -V          Display program version and copyright.

EXAMPLE
  Create a decomposition-defined target architecture from a 2D regular
  grid source graph of dimension 3 times 5, and save it, as a compiled
  target architecture, under the gzip(1) format, to file 'm3x5.tgt.gz'. 

    $ gmk_m2 3 5 | amk_grf | acpl - m3x5.tgt.gz

  Note that, in this precise case, it would be much preferable to use
  directly the 'mesh2D' algorithmically-defined target architecture.

    $ echo "mesh2D 3 5" > m3x5.tgt

SEE ALSO
  acpl(1), amk_ccc(1), atst(1), dgmap(1), gmap(1), gmtst(1).

  Scotch user's manual.

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