ERGO-Code/HiGHS issues and pull requests

#1923 - An attempt to fix potential deadlock issues in Windows.

Pull Request - State: open - Opened by mathgeekcoder 17 days ago - 1 comment

#1922 - Clang format update

Pull Request - State: closed - Opened by galabovaa 18 days ago

#1921 - Clang format update

Pull Request - State: closed - Opened by galabovaa 18 days ago

#1920 - Fix 1860

Pull Request - State: closed - Opened by jajhall 18 days ago - 1 comment

#1919 - Methods receiving matrix data where only small values are explicit ze…

Pull Request - State: closed - Opened by jajhall 19 days ago

#1918 - Add function to compute fractional part

Pull Request - State: closed - Opened by fwesselm 19 days ago

#1917 - Added PDLP to docs!

Pull Request - State: closed - Opened by jajhall 20 days ago

#1916 - Fix 1915

Pull Request - State: closed - Opened by jajhall 20 days ago - 1 comment

#1915 - Add documentation page listing and naming available solvers?

Issue - State: closed - Opened by pierre-haessig 21 days ago - 2 comments
Labels: Documentation

#1914 - Replace expensive computations

Pull Request - State: closed - Opened by heshpdx 24 days ago - 2 comments

#1913 - Test the changes in #1911

Pull Request - State: closed - Opened by jajhall 24 days ago

#1912 - Revert "Precompute expensive computations"

Pull Request - State: closed - Opened by jajhall 24 days ago

#1911 - Precompute expensive computations

Pull Request - State: closed - Opened by heshpdx 24 days ago - 9 comments

#1910 - Suggestion: enum for some integer options

Issue - State: open - Opened by andrea-cassioli-maersk 26 days ago - 1 comment
Labels: code-quality

#1909 - Fix 1908

Pull Request - State: closed - Opened by jajhall 26 days ago - 4 comments

#1908 - Some minor changes

Pull Request - State: closed - Opened by fwesselm 26 days ago - 1 comment

#1907 - Compiler warnings due to `src/parallel/HighsSplitDeque.h`

Issue - State: closed - Opened by jajhall 28 days ago - 5 comments
Labels: code-quality, Compiler warning

#1906 - highspy: unpythonic error handling

Issue - State: open - Opened by few 29 days ago - 3 comments
Labels: code-quality, Python

#1905 - Missing callbacks

Issue - State: open - Opened by few 29 days ago - 5 comments
Labels: code-quality, Python

#1904 - highspy: Passing user_callback_data to setCallback raises exception

Issue - State: open - Opened by few 29 days ago - 2 comments
Labels: bug, Python

#1903 - highspy (direct calls via pybind11) incorrectly handles sliced numpy arrays

Issue - State: open - Opened by mathgeekcoder about 1 month ago
Labels: bug, Python

#1902 - Fixing #1900

Pull Request - State: closed - Opened by jajhall about 1 month ago - 1 comment

#1901 - Fix 1900

Pull Request - State: closed - Opened by jajhall about 1 month ago

#1900 - Enable QP handling in C# and tidy up the use of HighsModel

Issue - State: closed - Opened by jajhall about 1 month ago - 17 comments
Labels: enhancement

#1899 - WARNING: LP matrix packed vector contains 2 |values| in [0, 0] less than or equal to 1e-09: ignore

Issue - State: closed - Opened by few about 1 month ago - 2 comments
Labels: code-quality

#1898 - plot_highs_log.py now avoids printing spurious incumbent lines when best solution is NaN

Pull Request - State: closed - Opened by jajhall about 1 month ago

#1897 - Initialize some arrays

Pull Request - State: closed - Opened by fwesselm about 1 month ago

#1896 - Basis status error on return from postsolve

Issue - State: open - Opened by jajhall about 1 month ago
Labels: bug, LP

#1895 - Fix 1789

Pull Request - State: open - Opened by jajhall about 1 month ago

#1894 - Mip log plotter

Pull Request - State: closed - Opened by jajhall about 1 month ago

#1892 - highspy: Highs.val should work for highs_linear_expression

Issue - State: open - Opened by few about 1 month ago - 1 comment
Labels: enhancement

#1891 - highspy: updated highs_linear_expression to be immutable for issue #1888

Pull Request - State: open - Opened by mathgeekcoder about 1 month ago - 2 comments

#1890 - `col_ecol_offset` now set - as const - for greater clarity

Pull Request - State: closed - Opened by jajhall about 1 month ago

#1889 - Fix compiler warning

Pull Request - State: closed - Opened by fwesselm about 1 month ago

#1888 - highspy: highs_linear_expression.add modifies self

Issue - State: open - Opened by few about 1 month ago - 22 comments
Labels: code-quality, Python

#1887 - Failed to install highs_fortran_api.mod on Windows

Issue - State: open - Opened by limska about 1 month ago - 5 comments
Labels: Build, bug

#1886 - Release GIL and Run in Background Thread

Pull Request - State: closed - Opened by michaelbynum about 1 month ago - 31 comments

#1885 - Fix 1883

Pull Request - State: closed - Opened by jajhall about 1 month ago

#1884 - highspy: Expose new feasibility relaxation feature

Pull Request - State: closed - Opened by few about 1 month ago - 1 comment

#1883 - Cycling or infinite loop in presolve

Issue - State: closed - Opened by odow about 1 month ago - 11 comments
Labels: bug, LP, LP presolve

#1882 - python: Provide incumbent solution in callback

Pull Request - State: open - Opened by few about 1 month ago - 1 comment

#1881 - writePrimalSolution: flush file after each call (#1880)

Pull Request - State: open - Opened by few about 1 month ago

#1880 - mip_improving_solution_save should flush file after each update

Issue - State: open - Opened by few about 1 month ago - 1 comment
Labels: MIP, bug

#1879 - Restored full C API unit test and corrected/updated documentaiton of Hessian

Pull Request - State: closed - Opened by jajhall about 1 month ago

#1877 - Error in MIP presolve

Issue - State: open - Opened by jajhall about 2 months ago
Labels: MIP, bug, MIP Presolve

#1876 - Fix 1872

Pull Request - State: closed - Opened by jajhall about 2 months ago

#1875 - Double free or corruption on STADAT1 problem

Issue - State: closed - Opened by stephane-caron about 2 months ago - 1 comment

#1874 - Segmentation fault on LASER problem from Maros-Meszaros

Issue - State: closed - Opened by stephane-caron about 2 months ago

#1873 - Add "multiple objectives"

Issue - State: open - Opened by jajhall about 2 months ago
Labels: enhancement

#1872 - Add "Feasibility relaxation"

Issue - State: closed - Opened by jajhall about 2 months ago - 1 comment
Labels: enhancement

#1871 - Add "Fixed model" code following solution of a MIP

Issue - State: open - Opened by jajhall about 2 months ago
Labels: enhancement, MIP

#1870 - Add sensitivity analysis as defined by AMPL

Issue - State: open - Opened by jajhall about 2 months ago
Labels: enhancement

#1869 - Add "kappa"

Issue - State: open - Opened by jajhall about 2 months ago
Labels: enhancement

#1868 - LP solver: malloc(): write to free mem

Issue - State: closed - Opened by ron-at-swgy about 2 months ago - 10 comments

#1867 - Add Python type stub file

Pull Request - State: closed - Opened by N-Wouda about 2 months ago - 1 comment
Labels: enhancement

#1866 - Python type stubs for native extensions

Issue - State: closed - Opened by N-Wouda about 2 months ago - 3 comments

#1865 - HIGHS 1.7.2. MIP solver terminates prematurely due to error in dual bound

Issue - State: open - Opened by jeffreydeankelly2 about 2 months ago - 11 comments
Labels: MIP, bug

#1864 - Reported optimal solution is not optimal

Issue - State: closed - Opened by TheSil about 2 months ago - 3 comments

#1863 - Fix 1729

Pull Request - State: closed - Opened by jajhall 2 months ago - 1 comment

#1862 - Encountered ERROR: HighsSearch::selectBranchingCandidate

Issue - State: open - Opened by Thell 2 months ago - 7 comments
Labels: code-quality, MIP

#1861 - Fix error reading fixed format .mps files

Pull Request - State: closed - Opened by rolfvdhulst 2 months ago - 1 comment

#1860 - Error reading Fixed format MPS files

Issue - State: closed - Opened by rolfvdhulst 2 months ago - 2 comments
Labels: code-quality

#1858 - Hard feasible IP found infeasible when presolve is used

Issue - State: open - Opened by jajhall 2 months ago
Labels: bug, MIP Presolve

#1857 - mip_improving_solution_save not saving on each improvement

Issue - State: closed - Opened by Thell 2 months ago - 3 comments

#1856 - Getting incumbent solution in callback (highspy)

Issue - State: open - Opened by sertalpbilal 2 months ago - 1 comment
Labels: MIP, bug, Python

#1855 - Refactor highspy for enhanced usability and performance

Pull Request - State: closed - Opened by mathgeekcoder 2 months ago

#1854 - Update index.md

Pull Request - State: closed - Opened by Mathemalsky 2 months ago

#1852 - Added IPM reference and commented on absence of references for QP and MIP

Pull Request - State: closed - Opened by jajhall 2 months ago

#1851 - Fix a broken link.

Pull Request - State: closed - Opened by Mathemalsky 2 months ago - 1 comment

#1850 - ENH: Meson highs 1.7.0

Pull Request - State: closed - Opened by HaoZeke 2 months ago

#1849 - Add an option to obtain dual information from the best solution found in MIP problems

Issue - State: open - Opened by datejada 2 months ago - 2 comments
Labels: enhancement, MIP

#1848 - Update substitutions if a column is transformed

Pull Request - State: closed - Opened by fwesselm 2 months ago - 2 comments

#1847 - linker error due to .res files from v1.7.0

Issue - State: open - Opened by dmeoli 2 months ago - 1 comment
Labels: Build

#1844 - Added mip_max_start_nodes` to avoid excessive cost when a MIP is solved to complete a partial solution.

Pull Request - State: closed - Opened by jajhall 3 months ago

#1843 - Add facility to specify a partial primal solution via indices and values

Pull Request - State: closed - Opened by jajhall 3 months ago

#1842 - LeakSanitizer locates memory leaks in highs

Issue - State: open - Opened by Mathemalsky 3 months ago - 12 comments
Labels: code-quality, bug

#1841 - Fix 1813

Pull Request - State: closed - Opened by jajhall 3 months ago

#1840 - Fix 1811

Pull Request - State: closed - Opened by jajhall 3 months ago - 1 comment

#1839 - Added int64_t mip_total_lp_iterations to HighsCallbackDataOut and modified accessor function

Pull Request - State: closed - Opened by jajhall 3 months ago

#1838 - Running in Parallel gives unexpected result.

Issue - State: open - Opened by JeroenMNallian 3 months ago - 9 comments
Labels: bug

#1837 - Add user cuts

Issue - State: open - Opened by jajhall 3 months ago
Labels: enhancement

#1834 - Stream HiGHs solver output in pyomo

Issue - State: closed - Opened by ckaldemeyer 3 months ago - 1 comment

#1832 - Use tolerances when rounding

Pull Request - State: closed - Opened by fwesselm 3 months ago

#1830 - highspy API improvements and benchmark

Issue - State: closed - Opened by rlloretb 3 months ago - 1 comment