#12004: copying a linear program using Coin solver consumes enormous amounts of
memory
----------------------------------+-----------------------------------------
Reporter: john_perry | Owner: ncohen
Type: defect | Status: new
Priority: major | Milestone: sage-4.8
Component: linear programming | Keywords: linear programming, Coin,
copy, memory
Work_issues: | Upstream: N/A
Reviewer: | Author: john_perry
Merged: | Dependencies:
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Comment(by john_perry):
I figured out how to implement the copy constructor: in the .pxd file,
declare under `cdef cppclass c_OsiCbcSolverInterface
"OsiCbcSolverInterface"`
{{{
c_OsiCbcSolverInterface(c_OsiCbcSolverInterface &si)
}}}
In the .pyx file, I then call
{{{
p.si = new
c_OsiCbcSolverInterface(<c_OsiCbcSolverInterface>self.si)
}}}
It runs, but we still get exponential growth of memory.
I'm running out of ideas here. Do you have a copy of the Coin source, and
can you see if there is exponential growth if we do the same thing there?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12004#comment:12>
Sage <http://www.sagemath.org>
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