Lance Clifner
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Activity overview
Latest activity by Lance Clifner-
Lance Clifner commented,
WRT the root relaxation, I have found that Heuristics=0.5 cuts the IP portion of the solution time in about half (to get to a solution with a MIPGap < 1%). Now, the root relaxation takes about hal...
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Lance Clifner commented,
I was trying this out today, and it is not working for me. I cannot get the workers to start. I have a Dell XPS 15 Intel i9 core with 8 cores (16 virtual cores) running Windows 10 professional. ...
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Lance Clifner created a post,
How do you run grbtune on multiple machines?
AnsweredFrom today's auto-tuning discussion, one panelist mentioned that he ran grbtune on 10 machines in parallel and was able to go through some 300+ parameter combinations vs. the 33 parameter combinati...
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Lance Clifner commented,
Thanks for the pointers to the documentation, I understand what is happening and why the new variable was added, and how to make it operate the way that I want it to work!
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Lance Clifner commented,
So, I believe I have figured this out. It appears that MPSRg*blort* is a dummy variable created by Gurobi for the constraint row named *blort*. It appears to add this variable in order to make the...
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Lance Clifner created a post,
Gurobi solution created new variables with prefix name of MPS_Rg. What does this mean?
AnsweredI am creating a new model, adding one new constraint at a time to make sure the model is working with each new constraint. I just added a new constraint equation and ran the solution. Gurobi retur...