Mip race - #2474

Merged

jajhall merged 62 commits into

Aug 26, 2025

Commits on Jul 15, 2025

Commits on Jul 17, 2025

Added newSolution, terminate and terminated to MipRace and HighsMipSolverData
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d5f9db2
Now to extend callbackUserSolution to generic extenalsolution method
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865628c
Added mip-race unit test and restored default value of mip_race_concurrency to 0
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ae572dc
Now to remove callback-related logic from call to queryExternalSolution
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9c750ec
can ExternalMipSolutionQueryOrigin be moved to HighsMipSolver.h?
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a4e9290
Now checking for terminate instruction - time to use multi-threading!
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7a515c3
Have MIP solvers running concurrently
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1bec802
Failed to add HighsLogOptions to MipRace
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41eb3f1

Commits on Jul 18, 2025

Moved MipRace struct definition to HighsMipSolver.h
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239bf49
Worker logging only to mip_worker*.log
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a4f4cbc
Now flip terminate<->terminated
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0985562
Now only terminate the MIP race if it's not already terminated
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a3b0846
Merged latest into this branch
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fcafe50
Introduced HighsModelStatus::kHighsInterrupt for MIP race interrupt
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2b1a131
Now extracting HighsMipSolverInfo
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d0af6ec
WIP
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39456e8
Now to start reading incumbents from other MIP solver instances
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5a5b30a

Commits on Jul 19, 2025

Commits on Jul 20, 2025

Commits on Jul 21, 2025

Introduce termination_status flag
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0d284c9
Introduced independent terminator status and HighsTerminator struct
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ad8bca5
Now unit tests pass, start using termination_status_ and HighsTerminator
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105d560
Now to initialise HighsTerminator
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e8a9175
Eliminated infinite loop when HighsTermination occurs in performRestart
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e91a215
Stripped termination record from MipRace
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46c5bde
Now to avoid HighsTerminator call for standard MIP solve
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26e930b
Not so ambitious...
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9948f3c
Use HighsTerminator::my_instance
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4ad6e3b
Cleaned up; formatted
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e895296
Introduced HighsMipSolver::initialiseMipRace
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7058fc4
Ready to externd terminator to sub-MIPs!
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18b4356

Commits on Jul 22, 2025

Commits on Jul 23, 2025

Cleaned up, and first of @mathgeekcoder's suggestions implemented
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1c5cf45
Formatted
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5a1c095

Commits on Jul 29, 2025

Commits on Jul 30, 2025

Now checking instance solution for feasibility, and computing the corresponding objective locally
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7d4c8be
Add single presolve option to MIP race
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84f4bb5
Still passes bin/unit_tests mip-race
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6011753
Now able to run MIP race on single presolved model
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acd2cfc
Formatted
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6cb49c3
Removed stray printf and isolated health warning logging for MIP race
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d77e739

Commits on Aug 26, 2025

Deleted MIP race code
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0c3ddc5
Merge branch 'latest' into mip-race
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079dc03
Removed MipSolverInfo and last vestiges of MIP race
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6b4a6ee