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Document basis warm-start behavior: PAMI ignores readBasis(), presolve invalidates basis

code-quality

enhancementNew feature or requestNew feature or request

LP

LP presolve

Status: Open.

#2913 In ERGO-Code/HiGHS;

· MaykThewessen opened on Mar 13, 2026

Feature request: HiPO symbolic factorization reuse across solves

enhancementNew feature or requestNew feature or request

HiPO

LP

Status: Open.

#2911 In ERGO-Code/HiGHS;

· MaykThewessen opened on Mar 12, 2026

Feature request: Expose additional HiPO timing fields via HighsInfo

enhancementNew feature or requestNew feature or request

HiPO

LP

Status: Open.

#2910 In ERGO-Code/HiGHS;

· MaykThewessen opened on Mar 12, 2026

Feature request: Block-angular Schur complement for HiPO IPM

enhancementNew feature or requestNew feature or request

HiPO

LP

Status: Open.

#2909 In ERGO-Code/HiGHS;

· MaykThewessen opened on Mar 12, 2026

CUDA build for python

Status: Open.

#2906 In ERGO-Code/HiGHS;

· slowjazz opened on Mar 9, 2026

inheuristic ---> This variable may be missed during the heuristic process, causing it to become invalid and unable to effectively indicate whether it is in the B&B process or the heuristic method.

code-quality

MIP

Status: Open.

#2901 In ERGO-Code/HiGHS;

· wangchonghelloworld-svg opened on Mar 9, 2026

Presolve incorrectly collapses objective value to exact zero

bug

MIP

MIP Presolve

Status: Open.

#2900 In ERGO-Code/HiGHS;

· baharev opened on Mar 8, 2026

HiPO v1.13.1 vs v1.12.0 slower (on Windows)

Status: Open.

#2896 In ERGO-Code/HiGHS;

· NPC opened on Mar 5, 2026

Access violation with threads > 1 on Windows (highspy 1.13.1)

bug

MIP

Parallel

Status: Open.

#2885 In ERGO-Code/HiGHS;

· claudiabongiovanni opened on Mar 2, 2026

Incorporate indicator constraints

code-quality

enhancementNew feature or requestNew feature or request

MIP

Status: Open.

#2882 In ERGO-Code/HiGHS;

· jajhall opened on Mar 2, 2026

Dual simplex clean-up after primal simplex may use fresh dual edge weights

code-quality

LP

Simplex

Status: Open.

#2877 In ERGO-Code/HiGHS;

· jajhall opened on Feb 27, 2026

A few crashes and correctness issues in HiGHS found by Flip

bug

Status: Open.

#2874 In ERGO-Code/HiGHS;

· zxt5 opened on Feb 26, 2026