see http://yetanothermathprogrammingconsultant.blogspot.co.uk/
-- Nigel Galloway [email protected] On Tue, Apr 21, 2015, at 03:32 AM, Uday Reddy wrote: > With glpk 4.52 and with the attached input, I get the following > failure/error: > > ------------------------------------------------------------------------------ > $ glpsol --lp mi.cplex > > Warning: numerical instability (primal simplex, phase I) > 2979: obj = 1.092652474e+04 infeas = 5.265e+09 (0) > Warning: numerical instability (primal simplex, phase I) > 2996: obj = 1.092637382e+04 infeas = 5.260e+09 (0) > 3000: obj = 1.092644011e+04 infeas = 5.235e+09 (0) > Warning: numerical instability (primal simplex, phase I) > 3051: obj = 1.077725595e+04 infeas = 5.201e+09 (0) > Warning: numerical instability (primal simplex, phase I) > 3059: obj = 1.074805814e+04 infeas = 5.185e+09 (0) > Warning: numerical instability (primal simplex, phase I) > 3122: obj = 1.998434476e+03 infeas = 3.955e+05 (0) > Warning: numerical instability (primal simplex, phase I) > 3159: obj = 1.998431624e+03 infeas = 3.944e+05 (0) > Error: unable to factorize the basis matrix (1) > Sorry, basis recovery procedure not implemented yet > glp_intopt: cannot solve LP relaxation > Time used: 1.7 secs > Memory used: 10.8 Mb (11322915 bytes) > -------------------------------------------------------------- > > Any insights/workarounds will be appreciated. > _______________________________________________ > Help-glpk mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/help-glpk > Email had 1 attachment: > + mi.cplex.gz > 97k (application/x-gzip) -- http://www.fastmail.com - mmm... Fastmail... _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
