sci.op-research

today, I used cplex to solve a large scale MIP problem, and I met with
a difficult problem, "Error 1001: out of memory"! I searched in google
and cplex user mannual, I got when dealing with large scale problems,
it may lack enough physical memory. according to suggested methods, I
set several parameters as follows:

cplex.setParam(IloCplex::TiLim,86400000);
cplex.setParam(IloCplex::WorkDir,".");
cplex.setParam(IloCplex::WorkMem,512000);
cplex.setParam(IloCplex::MIPDisplay,0
cplex.setParam(IloCplex::NodeFileInd,3);


however, the problem still exists, and I have tried all the ways I can
think out.

the physical memory is 1GB, the OS is windows XP.

I'd appreciate anybody give me a useful suggestion. thank you!