Tobias Höschen

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Activity overview

Latest activity by Tobias Höschen

  • Tobias Höschen created a post,

    Problem with Tokenserver

    Ongoing
    1. Community
    2. Other

    Hi, I am currently writing my master thesis and implemented an algorithm that uses Gurobi as a subroutine. My professor allowed me to work on one of the university's computers and for performance r...

    • Tobias Höschen
    • 2 followers
    • 0 comments
    • 0 votes

  • Tobias Höschen commented,

    1. Community
    2. Systems
    3. Performance of Gurobi on different Machines

    Hi Maliheh, Thank you for the info, I understand the problem now. Unfortunately I use C and not Python, so I guess I have to give parallelizing a go.. I only have one followup question: depending o...

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    • Tobias Höschen
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  • Tobias Höschen commented,

    1. Community
    2. Systems
    3. Performance of Gurobi on different Machines

    Hi Maliheh, yes I already checked before asking the question and am still kinda confused. I only solve one LP per iteration but in total solve thousands that are all independent of each other. Here...

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    • Tobias Höschen
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  • Tobias Höschen created a post,

    Performance of Gurobi on different Machines

    Answered
    1. Community
    2. Systems

    Hi! I wrote a program for my masters thesis that calls Gurobi several times as a subroutine. This seems to be the bottleneck of my code, since 95% of the time is spent inside of Gurobi. I first use...

    • Tobias Höschen
    • 2 followers
    • 5 comments
    • 0 votes

  • Tobias Höschen commented,

    1. Community
    2. Algorithms
    3. Speeding up Gurobi LP solver

    Hi Jaromil, as far as I understand there shouldn't be any memory issues (see picture). Or am I missing something? Best, Tobias

  • Tobias Höschen commented,

    1. Community
    2. Algorithms
    3. Speeding up Gurobi LP solver

    Hi Jaromil, I definetly didn't interrupt the process but also am not aware of any time constraints for my system (macOS). I just tried the tuning on a smaller instance and it also interrupts after ...

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    • Tobias Höschen
    • Edited
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  • Tobias Höschen commented,

    1. Community
    2. Algorithms
    3. Speeding up Gurobi LP solver

    Hi Jaromil, Tanks for the effort and help! How long did the tuner run? You can set the TuneTimeLimit to, e.g., 86400, to let the tuner run for one day. It should definitely test more than 10 param...

  • Tobias Höschen commented,

    1. Community
    2. Algorithms
    3. Speeding up Gurobi LP solver

    Hi Jaromił, actually I already did some "research" before posting here and used the tuning tool, so this are already the tuned parameters. Is it normal that the tool only tests like 10 possible par...

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    • Tobias Höschen
    • Edited
    • 1 vote

  • Tobias Höschen created a post,

    Speeding up Gurobi LP solver

    Ongoing
    1. Community
    2. Algorithms

    Dear Gurobi Community, How can I speed up the running time of Gurobi LP solver? At first the time seems to be okay but since I need to solve lots of LPs of the exact same form, its too much for my ...

    • Tobias Höschen
    • Edited
    • 2 followers
    • 8 comments
    • 1 vote