[Cbc] Hot Start for MIP

[John Forrest]

Alexis,

Try using stand-alone cbc or one of the example drivers which 
effectively use the stand-alone cbc.

First just try mipstart xxxxx.sol - that is simple and should help.

The hotStart code can be turned on by giving a solution using priorityIn 
with solution and then forceSolution --- but I would have to check 
exactly how it works (now).

John Forrest


On 11/05/15 18:07, Alexis wrote:
> I have got a large MIP to solve for which I would like to implement a 
> hot start strategy.
>
> My understanding is that I should use the function 
> CbcModel::setHotstartSolution(const double *solution, const int 
> *priorities=NULL),
> where solution assumes the same ''order'' of variables as defined for 
> the model itself. I am not so sure to understand the meaning of
> the pointer priorities though. The hotstart solution I intend to give 
> is an actual feasible solution to the MIP.
>
> Am I on the right track?
>
> Thanks in advance for the help
>
> -- 
> Alexis Guigue, E.I.T., B.Eng., M.A.Sc., Ph.D.
> Software Engineer/Research Engineer
> aguigue at softree.com
> 604-519-6222, ext. 3
>
> Softree Technical Systems Inc. <http://www.softree.com>
> Engineering an Easier Way
>
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>
>
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