Algorithms – Gurobi Support Portal

How optimization algorithms work & improving their performance

Distributed MIP logging & ramp-up question
- Simon Felix
- December 06, 2019 15:08
3 votes 7 comments
MIP start is the optimal solution and yet I receive "MIP start did not produce a new incumbent solution"
- Monir Sabbaghtorkan
- April 30, 2020 19:37
2 votes 4 comments
Model contains large quadratic objective coefficient range.
- Soufyan Zayou
- January 23, 2020 10:59
2 votes 9 comments
Tolerance and constraint parameters Answered
- Soufyan Zayou
- January 12, 2020 12:31
2 votes 3 comments
Theory about the algorithms Answered
- Luca Vitale
- April 17, 2019 12:45
2 votes 2 comments
How do I specify the algorithm used to solve my model in pyomo? Answered
- Amanda Farnsworth
- September 08, 2021 17:19
1 vote 1 comment
Unable to find sub-optimal solution Answered
- Mohit Kumar
- August 31, 2021 07:11
1 vote 3 comments
What happens after root relaxation has been solved? Long time before exploring further nodes according to log Answered
- Hendrik Weber
- August 24, 2021 12:51
- Edited
1 vote 2 comments
Optimization time: local machine vs computer cluster Answered
- Pedro Zattoni Scroccaro
- July 21, 2021 16:43
1 vote 1 comment
Worse performance for smaller problem Answered
- Danylo Lykov
- July 05, 2021 19:13
1 vote 4 comments
Speeding up Gurobi LP solver Ongoing
- Tobias Höschen
- June 01, 2021 13:24
- Edited
1 vote 8 comments
same LP solution multiple times in root node, user cuts ignored
- Mario Ruthmair
- May 12, 2021 14:20
1 vote 1 comment
Astronomically low node throughput; major degeneracy? Answered
- Philip Taffet
- April 27, 2021 15:04
1 vote 2 comments
the time Answered
- hamzih alsmadi
- March 05, 2021 00:46
- Edited
1 vote 1 comment
Providing integer start solution drastically increases root relaxation computation time Answered
- Hendrik Weber
- November 17, 2020 19:03
- Edited
1 vote 7 comments
Advice on Cuts and Reducing Solution Time Ongoing
- William ONeill
- November 16, 2020 22:02
1 vote 1 comment
Implementation of Benders Decomposition with Callbacks Ongoing
- Pramesh Kumar
- November 16, 2020 20:26
1 vote 1 comment
Is it possible to get the value of the Interior Solution ? Ongoing
- Paul Maximilian Röhrig
- October 01, 2020 15:24
1 vote 3 comments
Lift and project cut Answered
- Tang Try
- September 14, 2020 01:22
1 vote 2 comments
Are linear variables tight when having an incumbent integer solution? Answered
- Nico André Schmid
- September 09, 2020 07:50
- Edited
1 vote 2 comments
Updating of Best Bound based on integrality of objective function value (due to integer coefficients and integer decision variables) Answered
- Hendrik Weber
- August 18, 2020 13:54
- Edited
1 vote 3 comments
Cannot find feasible solution and programm killed after a long time Answered
- susanta samanta
- July 16, 2020 14:38
1 vote 4 comments
Gurobi applies heuristics even after turning them off Ongoing
- Nico André Schmid
- May 04, 2020 16:56
1 vote 5 comments
Does Gurobi 9.0 guarantee global optimality for MICQP? Ongoing
- Jongeun Kim
- April 21, 2020 19:14
1 vote 4 comments
Reliable Results ? Answered
- ibtissam labriji
- February 18, 2020 17:19
1 vote 3 comments
Dealing with 'Sub-optimal termination' in Barrier Method Answered
- Gregory Hauser
- January 13, 2020 21:05
1 vote 1 comment
What solution wll GUROBI return when solving an unbounded MILP?
- Yingxiao Ye
- January 10, 2020 12:41
1 vote 0 comments
No solution found when using an objective function Answered
- Matthieu Lormeau
- December 09, 2019 15:06
- Edited
1 vote 5 comments
Cut loop at root node of MIP Answered
- Fan YANG
- August 23, 2019 15:23
- Edited
1 vote 6 comments
Order of variables & constraints vs. performance Answered
- Joost Berkhout
- July 08, 2019 13:39
1 vote 3 comments

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