v2.1.0

Performance improvements

• ParallelCol: reducing the amount of redundant transactions in case of multiple parallel integer columns
• Probing: checks the time limit condition before propagating a variable
• Probing: introduce new parameter to cap the badgesize
• SequentialMode: execute functions like trivialPresolve only once per round and not after every presolver

Interface changes

• Wrapper in Julia for PaPILO: https://github.com/scipopt/PaPILO.jl
• ProblemBuilder - setColImplInt(int,boolean): (un)sets the Flag Implied Integer for a variable

New parameters with default values

• probing.maxbadgesize = -1 : maximal number of probing candidates probed in a single badge of candidates (-1 deactivated)
• ortools.solver_id = PDLP : LP solver of or-tools
• dualfix.is_fix_to_infinity_allowed = true : should unbounded variables with objective value zero be fixed to infinity?

Data structures

Fixed bugs

• ParallelRowDetection: lhs is updated correctly
• fix fmt error: use correct amount of arguments for print statement
• copy extended_euclidean.hpp during installation
• fix bug in FindTBB module
• ranged rows in MPS Files can now be parsed if they are specified as 'E'
• postsolving FixInfinityCol works also in primal case
• store data for FixInfinityCol correct if bounds are both infinity
• PaPILO shows some behavior on different OS

Miscellaneous

• Providing a way to build PaPILO without TBB (warning parallel design can not be used anymore)
• Providing an interface to gurobi
• Providing an interface to ortools (GLOP/PDLP)
• Install all files (also externals) to the include/papilo folder
• Presolving is aborted if presolvers are activated that do not support dual postsolve