zimpl - Zuse Institute Mathematical Programming Language
zimpl [ -b ] [ -D name=value ] [ -f ] [ -F filter ] [ -h ] [ -m ] [ -l
length [ -n cm|cn|cf ] [ -o outfile ] [ -O ] [ -P filter [ -r ] [ -t
lp|mps|hum|rlp|pip ] [ -s seed ] [ -v 0-5 ] [ -V ] file ...
Zimpl is a little language to translate the mathematical model of a
problem into a linear or (mixed-)integer mathematical program expressed
in LPF or MPS file format which can be read by a LP or MIP solver.
None of the options is necessary. All input files in zpl format that
are given are concatenated and processed as if they are one big file.
This makes is possible to combine different parts of a model on the
command line. In this case the first filename given will be used as
basename for the output files in absence of an -o option.
The -t option is to select the output format. mps can be read by every
solver. lpf is an CPLEX format, but can also read by several solvers.
BE aware that for example Range-rows can not be expressed in lpf . If
you want to inspected the output yourself, hum format is a variant of
lpf with no name mangeling whatever, but unfortunately this violates
several format restrictions, so no solver will read this in. If rlp is
specified the output is in lpf format, but rows and columns are
-b Enable bison(1) debugging output.
Sets the parameter name to the specified value. This is
equivalent with having this line in the Zimpl program: param
-f Enable flex(1) debugging output.
The output is piped through a filter. A %s in the string is
replaced by the output filename. For example: -F "gzip -c
>%s.gz" would compress all the output files.
-h Show program help.
Sets the maximum length for variable names in LPF output files.
-m Write a CPLEX .mst Mip STart file.
Select the format for the generation of constraint names. Can be
either cm which will number them 1 ... n with a `c' in front.
cn will use the name supplied in the subto statement and number
them 1 ... n within the statement. cf will use the name given
with the subto, then a 1 .. n number like in cm and then append
all the local variables from the forall statements.
Sets the base-name for the output files. Default is the name of
the input file without extension.
-O Optimize the generated LP by doing some presolve analysis
The input is piped through a filter. A %s in the string is
replaced by the input filename. For example: -F "cpp -DWITH_C1
%s" would pass the input file through the C-preprocessor.
-r Write a CPLEX .ord branching order file.
Set the random number generator seed.
Selects the output format. Can be either lp which is default, or
mps , or hum , which is (only) human readable, or rlp , which is
randomly permuted, or pip , which means polynimial IP.
-v 0-5 Set the verbosity level. 0 is quiet, 1 is default, 2 is verbose,
3 is chatter, and 5 is debug.
-V Prints the version number.
The following diagnostics may be issued on stderr:
101 Bad filename
The name given with the -o option is either missing, a directory
name, or starts with a dot.
175 Illegal syntax for command line define -- ignored
The parameter of a -D option was either not of the form
name=value or the name was not a legal identifier.
There are about a hundred other possible error messages, but these are
either about the contend of the input file, or system messages.
Please report any bug to the author.
Thorsten Koch <firstname.lastname@example.org>
The lastest version of Zimpl is always available at
The Zimpl User Guide at <http://zimpl.zib.de/download/zimpl.pdf>.