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Re:Ask HN: Do you use an optimization solver? Which one? Do ... by yablak on Thursday April 21, 2022 @01:22AM (#31106243)
You're probably looking for a performance comparison. Look here:

http://plato.asu.edu/bench.html

This one stays pretty well updated. On the MIP side:

  * COPT
  * SCIP
  * HiGHS
seem to be top performers (of the OSS variety).

IIRC OR-Tools often by default uses SCIP for its MILP backend.

Re:Ask HN: Do you use an optimization solver? Which one? Do ... by SparseRunner on Monday April 25, 2022 @04:18AM (#31151776)
The latest results show HiGHS to be significantly better than vanilla SCIP. If "OSS" means "Open Source Solvers" then COPT isn't open-source and SCIP isn't open source for commercial purposes. Hence the warning given by OR-Tools. HiGHS is very much the best bet going forward for open-source MIP