#19090: cplex backend: return MIP relative gap
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Reporter: dcoudert | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.9
Component: linear | Resolution:
programming | Merged in:
Keywords: | Reviewers:
Authors: David Coudert | Work issues:
Report Upstream: N/A | Commit:
Branch: public/19090 | 964bbbb14768c1ef7632b9321ad03170f8d11eea
Dependencies: | Stopgaps:
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Comment (by ncohen):
Hellooooooo David !
At `u/ncohen/19090`, you will find a commit that lets you compute the
relatve mip gap in GLPK. From there, more information cab easily be
gathered, read and returned.
Even though it seems that this information is gathered at every node, and
not only once at the end of the exploring. The good news is that:
- It is probably cheap.
- We will see the callback function if we run a profiler, as it cannot be
inlined.
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/19090#comment:7>
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