Gurobi Stuck in Presolve
I am trying to solve an IP with Gurobi. The model was reaching the optimal solution with smaller instances however once I increase the problem size, the solver gets stuck in Presolve. It reaches a certain point beyond which it seems to stop. It doesn't move on to root simplex or proceed with presolve.
I tried changing the parameters:
model.setParam("Presolve", 1)
model.setParam("PrePasses", 300)
but still the same problem occurs.
I also tried to set Presolve to 0 however the problem then gets stuck in root simplex, where it also never ends. I looked through some of the posted questions (someone mentioned cycling although I am not sure if this is the case here and if so how to solve it).
Thanks!
-
Official comment
This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?. -
Hi Lama,
Could you share a link to the model?
Daniel
0
Post is closed for comments.
Comments
2 comments