-------- Forwarded Message -------- From: Alexandre Garreau <[email protected]> To: [email protected] Subject: What is this format? Date: Tue, 26 Jan 2021 11:46:03 +0100
Hello, In my university, they use cplex for teaching linear programming, and I’d like not to install anything proprietary on my computer, but I have to figure out how to deal with the files given while only doc for cplex, which I don’t have and never used… Do you know what format this is? it uses “.mod” as an extension, apparently that’s what glpk uses for its own format… but in this case, it’s not isn’t it? I thought maybe free mps, but reading it with --freemps doesn’t work either. Here I attach a sample file, with the various errors I get: $ glpsol --freemps charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --freemps charpentier1.mod Reading problem data from 'charpentier1.mod'... charpentier1.mod:1: invalid indicator record MPS file processing error $ glpsol --glp charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --glp charpentier1.mod Reading problem data from 'charpentier1.mod'... charpentier1.mod:1: error: line designator missing or invalid GLPK LP/MIP file processing error $ glpsol --math charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --math charpentier1.mod Reading model section from charpentier1.mod... charpentier1.mod:1: syntax error in model section Context: / MathProg model processing error $ glpsol --lp charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --lp charpentier1.mod Reading problem data from 'charpentier1.mod'... charpentier1.mod:1: 'minimize' or 'maximize' keyword missing CPLEX LP file processing error $ glpsol --freemps -m charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --freemps -m charpentier1.mod Reading model section from charpentier1.mod... charpentier1.mod:1: syntax error in model section Context: / MathProg model processing error $ glpsol --glp -m charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --glp -m charpentier1.mod Reading model section from charpentier1.mod... charpentier1.mod:1: syntax error in model section Context: / MathProg model processing error $ glpsol --math -m charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --math -m charpentier1.mod Reading model section from charpentier1.mod... charpentier1.mod:1: syntax error in model section Context: / MathProg model processing error $ glpsol --lp -m charpentier1.mod GLPSOL: GLPK LP/MIP Solver, v4.65 Parameter(s) specified in the command line: --lp -m charpentier1.mod Reading model section from charpentier1.mod... charpentier1.mod:1: syntax error in model section Context: / MathProg model processing error
charpentier1.mod
Description: audio/mod
