Saturday, December 29, 2012

Cplex 12.5 vs 12.4 Out of memory handling

With Cplex 12.4:


Besides Cplex crashing here, we also see poor error recovery and exception handling by the calling problem. It is good to see that with Cplex 12.5 we see much better behavior:


This is with 32 bit software. We could use a 64-bit version instead to allow larger memories, but instead I opted for reformulating the model and making it smaller so I don’t leave this work to the presolver.