======================================================== Note on file formats and conversion for our NEOS solvers ======================================================== Hans Mittelmann Input formats (MPS, LP etc) for various optimization codes are not very standardized. In order to provide users greater flexibility but without guarantee that every file submitted will be successfully processed we have implemented the following. A NEOS user who believes files are not processed correctly should send us email. ===== BPMPD ===== BPMPD only accepts strict MPS and QPS format. In all formats except AMPL names must thus not have more than 8 characters. The following happens with files submitted to NEOS-BPMPD: AMPL input: files are passed to the BPMPD with AMPL interface unchanged LP input: files are converted to MPS with lp2mps MPS input: files are passed to BPMPD unchanged; they need to be in strict format QPS input: files are passed to BPMPD unchanged; they need to be in strict format ==== SCIP ==== AMPL input: files are read with AMPL and written out as MPS with option presolve 0 CPLEX LP input: files are passed to SCIP unchanged ZIMPL input: files are passed to SCIP unchanged ext MPS input: files are passed to SCIP unchanged OSIL input: files are passed to SCIP unchanged ======== FEASPUMP ======== AMPL input: files are read with AMPL and written out as MPS with option presolve 0 CPLEX&MPS input: files are input directly