Linear optimization software. HiGHS Plus
active 2025-02-28 → 2026-08-10 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 529 days from 2025-02-28 to 2026-08-10. Pushes: 1,586 total, peak 27 in a day. Pull requests: 257 total, peak 7 in a day. Issues: 285 total, peak 13 in a day. Comments: 854 total, peak 20 in a day. Stars: 204 total, peak 3 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| jajhall | 913 | 299 | 120 | 257 |
| github-actions[bot] | 505 | 505 | 0 | 0 |
| galabovaa | 493 | 359 | 47 | 55 |
| Opt-Mucca | 255 | 120 | 16 | 67 |
| filikat | 189 | 147 | 4 | 27 |
| fwesselm | 151 | 25 | 25 | 72 |
| codecov[bot] | 126 | 0 | 0 | 126 |
| odow | 118 | 33 | 2 | 65 |
| Yanyu000 | 62 | 62 | 0 | 0 |
| mathgeekcoder | 43 | 9 | 4 | 25 |
| BenChampion | 32 | 8 | 7 | 13 |
| jeffreydeankelly2 | 12 | 0 | 0 | 7 |
| rdzman | 12 | 0 | 0 | 10 |
| jschueller | 11 | 0 | 3 | 6 |
| haman80 | 10 | 6 | 2 | 2 |
| svigerske | 9 | 3 | 2 | 4 |
| datadrivensupplychain | 8 | 0 | 0 | 7 |
| zxt5 | 8 | 0 | 0 | 2 |
| romz-pl | 7 | 0 | 0 | 6 |
| Thell | 6 | 0 | 0 | 5 |
Recent activity
Latest issues, pull requests and releases
- Issue comment#3206codecov[bot]2026-08-07 21:15Added `static_cast<Int>` to remove compiler warning in line 226 of `ipm/hipo/factorhighs/HybridSolveHandler.cpp`
- Pull request#3176EamonHetherton2026-07-27 09:56
- Issue#3171jajhall2026-07-26 22:37MIP: path-mixing cut is untransformed with different bound substitutions than its coefficients were built with, producing an invalid cut
- Issue#1723jajhall2026-07-26 17:14Solver option "choose", MIP ignored otherwise
- Issue#3140jajhall2026-07-07 22:36Regression in dual-fixing presolve v1.14.0 -> v.1.15.1
- Issue#3125jajhall2026-07-02 09:31IPX interior-point peak-memory regression between highspy 1.13.1 and 1.15.0 on a large LP
- Issue comment#3090fwesselm2026-06-26 06:08Incorrectly detected infeasibility due to presolve
- Issue comment#3025galabovaa2026-06-18 14:47sanitizer tests
- Issue comment#3042codecov[bot]2026-05-26 22:56Prevent parallel simplex when solving MIPs
- Issue comment#3022Opt-Mucca2026-05-20 09:02Increased presolve time for LP problems in v1.14.0
- Issue comment#3030galabovaa2026-05-20 07:24Patch 1
- Issue#3026jarsarasty2026-05-17 11:36Enhancement: cut-based (generation-2) conflict analysis for MIP
- Issue#3026jarsarasty2026-05-17 11:36Enhancement: cut-based (generation-2) conflict analysis for MIP
- Issue comment#3013odow2026-05-11 00:14Improvements to free variables in HiPO
- Issue comment#2994galabovaa2026-05-05 10:13HiPO in Python
- Issue comment#2994filikat2026-05-04 18:09HiPO in Python
- Issue#2999jajhall2026-05-04 13:56Python wheel pollutes global namespace with `LICENSE.txt`, `README.md`, `THIRD_PARTY_NOTICES.md`
- Issue comment#2996filikat2026-04-30 20:12Subprocesses terminate while testing clang builds
- Issue#2995rdzman2026-04-30 00:53presolve resulting in wrong solution for MILP
- Issue#2991jkiviluo2026-04-24 07:33Parallel dual simplex (PAMI) stalls indefinitely
- Pull request#2974galabovaa2026-04-22 17:39
- Issue comment#2985ValentinKaisermayer2026-04-22 04:49memory access error
- Issue comment#2987codecov[bot]2026-04-22 00:36Updated build for external dependencies
- Issue comment#2986codecov[bot]2026-04-21 12:37Reduce shift size in reduced-cost fixing
- Issue#2979jajhall2026-04-21 08:53Native heap corruption in v1.14.0 when passHessian receives a square Hessian with epsilon-level asymmetry (via CVXPY/highspy)
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 204 stars here means stars gained during the window, not the repo's star count.