Initializing help system before first use

# DEFAULTALG

Description | This selects the algorithm that will be used to solve LPs, standalone or during MIP optimization.
Type | Integer
Topic areas | LP, Branch and Bound Search
Values |
1 | Automatically determined.
2 | Dual simplex.
3 | Primal simplex.
4 | Newton barrier (or hybrid gradient, if BARALG=4 is set).
Default value | 1
Note | Please note that when solving MIPs or MINLPs, this will affect cut loop LPs, heuristic LPs, and node LPs. To only change how the initial root LP is solved, please use the LPFLAGS control or pass the appropriate flags to XPRSoptimize or XPRSmipoptimize. The concurrent algorithm is used for standalone LPs, unless KEEPBASIS is turned on, in which case the dual simplex algorithm is used.
Affects routines | XPRSoptimize ( OPTIMIZE), XPRSlpoptimize ( LPOPTIMIZE), XPRSmipoptimize ( MIPOPTIMIZE).
See also | CONCURRENTTHREADS, LPFLAGS.
Category | Control

Parent Topic Control Parameters

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