SYMPHONY

NAME

symphony - mixed-integer linear program (MILP) solver

SYNOPSIS

symphony [ -hagrtbd ] [ -u ub ] [ -p procs ] [ -n rule ] [ -v level ] [ -s cands ] [ -c rule ] [ -k rule ] [ -m max ] [ -l pools ] [ -i iters ] [ -f parameter_file_name ] [-j 0/1] [-o tree_out_file]

DESCRIPTION

This manual page briefly documents the symphony command.

symphony is a generic MILP solver that can be invoked from the command line (through an interactive shell or in a batch mode), or by linking to the provided callable library. When no options are given symphony enters the interactive shell mode. Otherwise the program enters the batch mode, for which a summary of options is included below.

OPTIONS

At a minimum, one must specify the name of the file to be read and solved.

	-h		help
	-a		no cut timeout
	-d		enable graph drawing
	-g		use cut generator
	-r		do repricing in root
	-t		trim the tree
	-b		don’t perform branch and cut
	-u ub		use upper bound ’ub’

-p procs

allow ’procs’ active nodes

	-n i		use node selection rule ’i’
	-v i		set verbosity to level ’i’

-s cands

use ’cands’ candidates for strong branching

	-k i		use rule ’i’ to select child
	-m n		allow a max of ’n’ cuts to enter per iteration
	-e n		allow a max of ’n’ cut pools

-l n k

load balance level ’n’ and iterations ’k’

-i n

allow a max of ’n’ iterations in presolve

-f file

read parameters from parameter file ’file’

-j 0/1

whether or not to generate cgl cuts

-z n

set diving threshold to ’n’

-o file

output vbc-like tree information to file ’file’

Solver-specific switches:
symphony [ -H ] [ -FL file ]

-H

help (solver-specific switches)

-F model

model should be read in from file ’model’ (MPS format is assumed unless -D is also present)

-L model

LP format model should be read in from file ’model’

-D data

model is in AMPL format and data is in file ’data’

SEE ALSO

For a complete description, see
/usr/share/doc/coinor-libsymphony-doc/user-guide.pdf.gz
in the coinor-libsymphony-doc package.

AUTHOR

symphony was written by Ted Ralphs et.al.

This manual page was written by Aramian Wasielak <aramian.wasielak@gmail.com>, based on "symphony -h" and clp.1, for the Debian project (but may be used by others).