Initializing help system before first use

# DETERMINISTIC

Description | Selects whether to use a deterministic or opportunistic mode when solving a problem using multiple threads.
Type | Integer
Topic area | Determinism
Values |
0 | Use opportunistic mode.
1 | Use deterministic mode.
2 | Use deterministic mode, except allow the initial concurrent continuous solve of a MIP to be opportunistic.
Default value | 1
Notes | In deterministic mode thread synchronization is performed in deterministic order, which guarantees that repeated solves of the same problems under the same starting conditions will always produce the same outcome. This assumes that there are no non-deterministic events affecting the solve, such as interruption due to time limits or non-deterministic interaction through callback functions. In opportunistic mode the solver will always schedule work on any available thread. This can produce higher CPU utilization, but will sacrifice reproducability. GPU support for the hybrid gradient algorithm is not available in the concurrent LP solver in deterministic mode.
Affects routines | XPRSlpoptimize ( LPOPTIMIZE), XPRSmipoptimize ( MIPOPTIMIZE).
See also | THREADS, DETERMINISTICLOG.
Category | Control

Parent Topic Control Parameters

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