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[oqp]

The [oqp] section controls the native OpenQP optimizer selected with [optimize] lib=oqp.

Keywords

coordsys

Field Value
Type string
Default tric
Used by native optimizer coordinates

Coordinate system for the native optimizer. Examples use tric and auto.

trust

Field Value
Type float
Default 0.2
Used by optimizer trust radius

Initial trust radius.

trust_max

Field Value
Type float
Default 0.5
Used by optimizer trust radius

Maximum trust radius.

follow

Field Value
Type integer
Default 0
Used by mode following

Mode-following selector for transition-state style steps.

spring

Field Value
Type float
Default 0.05
Used by NEB

NEB spring constant.

climb

Field Value
Type boolean
Default True
Used by NEB

Enables climbing-image NEB behavior.

fmax

Field Value
Type float
Default 2.0e-3
Used by NEB convergence

NEB force threshold.

climb_fmax

Field Value
Type float
Default 0.05
Used by climbing-image NEB

Force threshold for the climbing image.

neb_dt

Field Value
Type float
Default 0.5
Used by NEB propagation

NEB integration step.

maxmove

Field Value
Type float
Default 0.2
Used by NEB image updates

Maximum NEB image displacement per step.

opt_ends

Field Value
Type boolean
Default True
Used by NEB endpoints

Optimizes NEB endpoints when true.

end_fmax

Field Value
Type float
Default 1.0e-3
Used by NEB endpoint convergence

Endpoint force threshold.

irc_step

Field Value
Type float
Default 0.1
Used by IRC

IRC step size.

irc_direction

Field Value
Type string
Default forward
Used by IRC

IRC direction.

mep_step

Field Value
Type float
Default 0.1
Used by MEP

MEP step size.