[Coin-discuss] Row bounds in OsiGLPK and MIP hot starts
efsilva at pobox.com
Tue May 4 14:34:13 EDT 2004
Dear COIN Team,
I am using CPLEX and GLPK(4-3) solvers under OSI. In my algorithm, I need
to solve several slight different MIP problems many times. I still have
some problems (probably in my code) but one of them is caused when I modify
the bounds using OsiGlpk. For example, the method
OsiGlpkSolverInterface::setRowUpper should set a row upper bound. However,
it is actually setting the lower bound. This is happening because this
method is just a copy of OsiGlpkSolverInterface::setRowLower.
Another thing I want to do is start the MIP solvers (via OSI) from a
heuristic integer solution I have. Could you tell me the better way to do
Thanks again for the nice work in COIN and if one of my works is accepted to
be published, I certainly will be citing and acknowledge the COIN team.
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