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Bump Highs.Native from 1.14.0 to 1.15.1 - #178
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--- updated-dependencies: - dependency-name: Highs.Native dependency-version: 1.15.1 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>
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Updated Highs.Native from 1.14.0 to 1.15.1.
Release notes
Sourced from Highs.Native's releases.
1.15.1
Patch release v1.15.1 fixes:
Apache release binaries not including HiPO fixed in PR #3112.
Build for users with C++20 fixed in PR #3114.
OpenBLAS setup issue affecting performance fixed in PR #3122.
Values passed for string option values (except for file names) are
converted to lower case PR #3108.
The highlights of v1.15 are the first variant of the parallel MIP solver
and the addition of HiPO in Python.
Code changes
Following PR #2886, our
prototype multithreaded MIP solver is available, refactoring
the worker/node-search logic of the branch-and-cut solver to run
across multiple threads. This is the first release of the parallel MIP
solver.
A fix to the parallel scheduler was merged in
PR #3087.
Following PR #2994,
HiPO can now be used to solve LPs and QPs from
highspy, withdocumentation added in
PR #3024 and
PR #3060. HiPO
performance was further improved by faster handling of free variables
(PR #3013) and faster
triangular solves
(PR #3014).
Prompted by #2957,
square Hessians that are only slightly asymmetric are now accepted by
Highs::qFormatOk, rather than being rejected outright(PR #2965,
PR #2984 and
PR #3003). Identification
of non-convexity in the QP solvers was also improved, with extended
documentation added in
PR #3056, and a further
bug affecting some QPs was fixed in
PR #3069. QP hot start
was added in PR #3089.
... (truncated)
1.15.0
The highlights of v1.15 are the first variant of the parallel MIP solver
and the addition of HiPO in Python.
Code changes
Following PR #2886, our
prototype multithreaded MIP solver is available, refactoring
the worker/node-search logic of the branch-and-cut solver to run
across multiple threads. This is the first release of the parallel MIP
solver.
A fix to the parallel scheduler was merged in
PR #3087.
Following PR #2994,
HiPO can now be used to solve LPs and QPs from
highspy, withdocumentation added in
PR #3024 and
PR #3060. HiPO
performance was further improved by faster handling of free variables
(PR #3013) and faster
triangular solves
(PR #3014).
Prompted by #2957,
square Hessians that are only slightly asymmetric are now accepted by
Highs::qFormatOk, rather than being rejected outright(PR #2965,
PR #2984 and
PR #3003). Identification
of non-convexity in the QP solvers was also improved, with extended
documentation added in
PR #3056, and a further
bug affecting some QPs was fixed in
PR #3069. QP hot start
was added in PR #3089.
Following PR #2982,
several bugs in the computation of an Irreducible Infeasible Subsystem
(IIS) via
Highs::getIiswere fixed.Following PR #3046,
zero-cost singleton columns are no longer fixed to an infinite bound
during
HPresolve::dualFixing, and the size of shifts applied duringreduced-cost fixing was reduced in
PR #2986. Strengthened
variable bounds found during presolve are now retained
(PR #3010), a bug in
the computation of the fractional value of a variable with finite
lower and upper bounds was fixed
... (truncated)
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