Provided by: scotch_5.1.12b.dfsg-2build4_amd64 
NAME
amk_ccc, amk_fft2, amk_hy, amk_m2, amk_p2 - create target architectures
SYNOPSIS
amk_ccc [options] dim [tfile]
amk_fft2 [options] dim [tfile]
amk_hy [options] dim [tfile]
amk_m2 [options] dimX [dimY] [tfile]
amk_p2 [options] [wght0] [wght1] [tfile]
DESCRIPTION
The amk_* programs create target architecture files for some common, regular topologies.
amk_ccc creates a decomposition-defined cube-connected-cycle topology of dimension dim. The decomposition
is performed first by bisection along the dimensions of the hypercube, then along the remaining cycle
graphs.
amk_fft2 creates a decomposition-defined fast-Fourier-transform topology of dimension dim. The
decomposition is performed by recursive bisection of the vertices, by descending dimension (that is, bit
number in the labeling of the vertices).
amk_hy creates a decomposition-defined hypercube topology of dimension dim. The decomposition is
performed by recursive bisection of the vertices, by descending dimension (that is, bit number in the
labeling of the vertices). Save for experimentation purposes, this program is deprecated, as the
algorithmically-defined 'hcub' target architecture is a more convenient and efficient way to represent
hypercube architectures.
amk_m2 creates a decomposition-defined 2D regular grid topology of dimensions dimX and dimY. The
decomposition is performed by recursive splitting along the dimensions, either by cutting the longest
one, or by one-way dissection, depending on the '-m' option flag. Save for experimentation purposes, this
program is deprecated, as the algorithmically-defined 'mesh2D' and 'mesh3D' target architectures are a
more convenient and efficient way to represent 2D and 3D grid architectures.
amk_p2 creates a weighted path graph topology comprising only two vertices of weights wght0 and wght1.
This is just a helper program, which builds a 'wcmplt' algorithmically-defined complete graph with two
vertices. It may be used to compute weighted bisections of a graph.
When the proper libraries have been included at compile time, the amk_* programs 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', on input only).
OPTIONS
-mmeth For amk_m2 only. Perform either recursive dissection or one-way dissection, according to the given
method flag:
n perform nested dissection (default).
o perform one-way dissection (cut across Y, then X).
-h Display some help.
-V Display program version and copyright.
EXAMPLE
Create a cube-connected-cycle target architecture of dimension 4, and save it to file 'ccc4.tgt'.
$ amk_ccc 4 ccc4.tgt
Run gmap to compute a bisection, into two parts of respective weights 3 and 5, of graph 'brol.grf' and
save the resulting mapping to file 'brol.map'. The dash '-' standard file name is used so that the target
architecture description is read from the standard input, through the pipe.
$ amk_p2 3 5 | gmap brol.grf - brol.map
SEE ALSO
acpl(1), atst(1), amk_grf(1), dgmap(1), gmap(1). Scotch user's manual.
AUTHOR
Francois Pellegrini <francois.pellegrini@labri.fr> February 14, 2011 amk_ccc(1)