Hello, I #39;m using glpsol to solve sizable MIP problems (~50,000 binary variables after presolving), using the command line options "--tmlim 90 --memlim 400 --fpump --cuts --bestp --mipgap 0.05". For problems of a certain size, the readout indicates that the "feasibility pump" kicks in relatively quickly, after which the problem is solved rapidly. For problems above a certain point, however, it does not seem to kick in.
This is moderately confusing, because I would like to solve problems just a bit above this cutoff. What can I do to improve matters? Louis Wasserman [email protected] http://profiles.google.com/wasserman.louisHello,
I'm using glpsol to solve sizable MIP problems (~50,000 binary variables after presolving), using the command line options "--tmlim 90 --memlim 400 --fpump --cuts --bestp --mipgap 0.05". For problems of a certain size, the readout indicates that the "feasibility pump" kicks in relatively quickly, after which the problem is solved rapidly. For problems above a certain point, however, it does not seem to kick in.
This is moderately confusing, because I would like to solve problems just a bit above this cutoff. What can I do to improve matters?
Louis Wasserman
[email protected]
http://profiles.google.com/wasserman.louis
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