[Scip] using gurobi as lp solver

Robert Schwarz mail at rschwarz.net
Mon Nov 30 15:33:19 MET 2009


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Marc Pfetsch wrote:
> Anyway, the real problem is that the interface of Gurobi does not
> support some crucial functionality: In particular, it does not support
> infeasibility rays (the "Dual-Farkas" that you mention). Moreover, it
> does not support access to the basis inverse. This is a pity, because I
> am sure that the functionality is there, but the interface does not
> allow to access it.
> 
> As a result, using the current version of Gurobi with SCIP is no fun,
> because all the advanced functionality is useless. I hope that the
> Gurobi interface will change soon - we will then update SCIP as well.
> 

OK, that's understandable.

> In the meantime you have to rely on a different LP-solver like SoPlex or
> Clp (or Cplex if you have a licence).
> 

SoPlex is, what I used so far. Clp didn't make any signigicant
difference. But both will do fine, of course.

Thank you,

- --
Robert Schwarz <mail at rschwarz.net>

Get my public key at http://rschwarz.net/key.asc
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