Originally posted by: prasr29

HI,

           I am using a 24GB RAM machine with Xeon e5 processor and a 64bit OS(windows 7). I am facing one weird error while running a cplex benders decomposition program with a pretty large dataset in this machine. I have solved a particular instance of the problem some days before and the machine gave the optimal solution. Now when I solve the same problem in the machine it says :"Error 1001: Out of memory". I understand this is something particular error with respect to the machine.  I have partitioned memory in this machine like this: 80GB in C: (which has OS, Cplex installation), 100 GB in E:( where i have kept my Visual studio C++ projects folder). Kindly guide me with respect to this error . Thank you.

The first two things to check:

• Are you giving CPLEX the same option settings that you used when you solved the model successfully?
• Is there anything else running on the machine that might be hogging memory (RAM)?

Originally posted by: Mark L. Stone

Along the lines of the 2nd bullet, there's always the old standby, reboot and try again. That can cure many ills.