Xuan Lin
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Activity overview
Latest activity by Xuan Lin-
Xuan Lin commented,
Hi,Thanks! I have another baseline model that is equivalent, but with looser convex relaxations and about 2x more constraints. The solving speed is usually slower. For this case, I got memory usage...
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Xuan Lin commented,
Hi Riley,Yes, running gurobi_cl point_mass_04_lnf.mps works ok and generate the logfile correctly.I figured that if I run:psrecord "gurobi_cl point_mass_04_lnf.mps" --include-children --log activit...
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Xuan Lin commented,
Hi,Thanks for the reply! I tried to run either:psrecord "gurobi_cl point_mass_04_lnf.mps" --log activity.txt --plot memory_usage.png --interval 1or:psrecord "python3 run_model.py" --log activity.tx...
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Xuan Lin created a post,
Comparing memory usage between different model formulations
AnsweredHi,I have two equivalent optimization models with different formulations that result in different numbers of variables and constraints. I want to compare their memory usage to demonstrate that one ...
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Xuan Lin created a post,
Help with installing gurobipy 12.0.2
AnsweredHi,I'm trying to use Gurobi 12.0.2 with gurobipy, but I have encounter some conflicting information. When I try to install with:~/Desktop/gurobi1200/linux64$ pip install -e.I got error:Obtaining fi...
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Xuan Lin commented,
Hi Jaromił, Thank you for the explanation! I have a follow-up question regarding this issue. Are the techniques disabled by activating LazyConstraints inherently incompatible with lazy constraints,...
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Xuan Lin created a post,
An empty callback function makes the solver unable to find any feasible solution
Awaiting user inputHi, I am trying to implement the Branch and Benders Cut algorithm using callback functions. My simplified code setup has: // master.cpp file// Initialize the master problem classMaster::Master(){ ...
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Xuan Lin commented,
Hi Riley, Thanks for the answer! I personally haven't used any GPU-based QP solver. I have heard about some research to accelerate QP solvers using GPUs, for example, this one. I think ADMM is know...
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Xuan Lin commented,
Hi Jaromił, Thanks for the answer! I actually didn't know that QPs can be solved with simplex. May I ask a minor question: does the column "unexplored nodes" always goes to 0 as the algorithm termi...
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Xuan Lin commented,
Hi Jaromił, Thanks for the answer! The column It/Node shows the average number of Simplex iterations performed per node, i.e., the average number of Simplex iteration to solve a problem A to opt...