Write ilp file occasionally during computeIIS?

[matthew.d...@gmail.com]

Hello,

Is there a way, e.g. using callbacks, to print the ilp file from time to time during computeIIS() ? (java api) I have some models where computeIIS takes a very very long time, and i'd rather see some intermediate (non-minimal) ilp file get printed than to have to either wait for computeIIS to finish, or to have to predefine a time limit for computeIIS, which requires guessing up front how long i expect computeIIS to take.

Thank you.

[Daniel Espinoza]

Hi Matthew,

What you can do is to try other IIS methods by changing the parameter (0 is often faster but may not be minimal)
http://www.gurobi.com/documentation/7.5/refman/iismethod.html#parameter:IISMethod

but there is no call-back function for IIS.

Hope this helps

Best,

Daniel