New open-source solver breakthrough for LP problems with HIGHS

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Max Parzen

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Sep 16, 2025, 4:37:39 AM (12 days ago) Sep 16
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Hi everyone,

HiGHS is releasing a new LP solver "HiPO AS". With this solver, especially large problem instances can be solved in a reasonable time. Like models with 8760 time steps and multiple nodes, which were just infeasible with any open-source solver!

Below is a performance example given in the new HiGHS paper. With typical problems reaching 10^6+, you can expect 20x or higher performance increases! References to that paper are available at the HiGHS LinkedIn post. Julian Hall also provided instructions on how to test this new solver even before the release here.

Exciting times!

Best wishes,

Max
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