lemon-project-template-glpk
comparison deps/glpk/examples/cplex/README @ 9:33de93886c88
Import GLPK 4.47
| author | Alpar Juttner <alpar@cs.elte.hu> |
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| date | Sun, 06 Nov 2011 20:59:10 +0100 |
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| 1 The program module in this subdirectory is a crude implementation of | |
| 2 CPLEX-like interface to GLPK API. It consists of two files: cplex.c and | |
| 3 cplex.h. | |
| 4 | |
| 5 NOTE that this module is NOT a clean room implementation of the CPLEX | |
| 6 callable library. It only implements a CPLEX-like interface to the GLPK | |
| 7 API routines, and its main purpose is to provide possibility to build | |
| 8 and run applications which normally use the CPLEX callable library. | |
| 9 | |
| 10 This module approximately corresponds to CPLEX 9.0. | |
| 11 | |
| 12 Currently this module can be used as a linear programming solver for | |
| 13 Concorde, the state-of-the-art computer code for solving the symmetric | |
| 14 traveling salesman problem (TSP) developed by David Applegate, Robert | |
| 15 Bixby, Vasek Chvatal, and William Cook. For details about Concorde see | |
| 16 its web page at http://www.tsp.gatech.edu/concorde.html. | |
| 17 | |
| 18 To build Concorde along with GLPK you need to do the following: | |
| 19 | |
| 20 1. Configure, build, and install GLPK. | |
| 21 | |
| 22 2. Download the Concorde tarball co031219.tgz (version Dec 19, 2003), | |
| 23 unpack and unarchive it. | |
| 24 | |
| 25 3. Copy files cplex.h and cplex.c to subdirectory concorde/LP/. | |
| 26 | |
| 27 4. Create file named lpglpk.c in subdirectory concorde/LP/. This file | |
| 28 must contain the following two lines: | |
| 29 | |
| 30 #include "cplex.c" | |
| 31 #include "lpcplex8.c" | |
| 32 | |
| 33 5. Configure Concorde in usual way (./configure) and then build it with | |
| 34 the following command: | |
| 35 | |
| 36 make CPPFLAGS=-I. LPSOLVER_INTERFACE=lpglpk.c LPSOLVER_LIB=-lglpk | |
| 37 | |
| 38 The Concorde executable can be found in subdirectory concorde/TSP/. | |
| 39 | |
| 40 Please note that currently this GLPK interface module does not support | |
| 41 some important features (namely, CPXgetijdiv, CPXmdleave, CPXpivotin, | |
| 42 CPXpivotout, and CPXstrongbranch), so large (more than 1000 nodes) TSP | |
| 43 instances cannot be solved in a reasonable time, and some instances may | |
| 44 cause abnormal termination of Concorde (if CPXgetijdiv is called). |