MMCFBlock

test/MMCFBlock

This directory hosts two testers for MMCFBlock, sharing the same instance data (retrieved / generated as described below):

• MMCF_test, which loads an instance in a MMCFBlock, solves it and cross-checks the result against the entirely different MMCFCplex solver;
• MMCFBlock_test, which loads the same instance and cross-checks every Solver of its BlockSolverConfig (a :MILPSolver and a LagrangianDualSolver) against each other.

MMCF_test (vs the MMCFCplex reference)

A tester which provides initial tests for MMCFBlock and any Solver able to handle Linear Programs (such as MILPSolver and its derived classes CPXMILPSolver, SCIPMILPSolver and GRBMILPSolver), as well as for a few of the mechanics of the "core" SMS++ library.

This executable, given the filename and (optionally) filetype of one Multicommodity Min-Cost Flow (MMCF) in one of the several supported file formats, reads the instance in a MMCFBlock and solves it with a :MILPSolver (or whatever appropriate solver the BlockSolverConfig described by BSPar-ref.txt dictates). It then loads the same problem with the entirely different solver MMCFCplex and again solves it, comparing the results (and printing the running time).

The usage of the executable is the following:

    ./MMCF_test file_name [typ]
    typ = s*, c, p, o, d, u, m (lower or uppercase)

Its batch is batch-ref. A batch file is provided that runs the test on a largish set of MMCF instances (but not very large ones, so that the tests does end in reasonable time). These instances are supposed to be in the data/ folder, but they need to be downloaded / generated before. The gen/ folder contains a genbatch which curls the instances from the COMMALAB site and generates another set with the included Mnetgen random generator (also available at that page with instructions for generating even larger ones if required). The download (but not the generation) is also automatically done when installing the repo with CMake.

All the tests passing confirms that MMCFBlock correctly loads the MMCF instances from file, and that no regressions have been done for the tested modules, in particular for the used CDASolver.

MMCFBlock_test (solver cross-check)

A tester which provides initial tests for LagrangianDualSolver, LagBFunction, any CDASolver able to handle C05Function in the Objective (such as BundleSolver), any CDASolver able to handle Linear Programs (such as MILPSolver and its derived classes CPXMILPSolver, SCIPMILPSolver and GRBMILPSolver), MMCFBlock and MCFBlock, as well as for quite a lot of the mechanics of the "core" SMS++ library.

This executable, given the filename and (optionally) filetype of one MMCF instance, reads it in a MMCFBlock and solves it with the two Solver specified by the BlockSolverConfig described by BSPar.txt, thought to be a :MILPSolver and a LagrangianDualSolver, comparing the results (and printing the running time).

    ./MMCFBlock_test file_name [typ]
    typ = s*, c, p, o, d, u, m (lower or uppercase)

Its batches are batch, batch-c, batch-m and batchML, over the same data/ set. Its makefile is makefile-xcheck.

All the tests passing confirms that no regressions have been done for the tested modules, in particular for the used Solver.

Authors

• Antonio Frangioni
  Dipartimento di Informatica
  Università di Pisa

• Enrico Gorgone
  Dipartimento di Matematica ed Informatica
  Università di Cagliari

License

This code is provided free of charge under the GNU Lesser General Public License version 3.0 - see the LICENSE file for details.