IMS variable values for the available complexity options

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Nonlinear Variable

default/simple

moderate

complex

OUTER_HCLOSE

0.001

0.01

0.1

OUTER_RCLOSEBND

0.1

0.1

0.1

OUTER_MAXIMUM

25

50

100

UNDER_RELAXATION

NONE

DBD

DBD

UNDER_RELAXATION_THETA

0.0

0.9

0.8

UNDER_RELAXATION_KAPPA

0.0

0.0001

0.0001

UNDER_RELAXATION_GAMMA

0.0

0.0

0.0

UNDER_RELAXATION_MOMENTUM

0.0

0.0

0.0

BACKTRACKING_NUMBER

0

0

20

BACKTRACKING_TOLERANCE

0.0

0.0

1.05

BACKTRACKING_REDUCTION_FACTOR

0.0

0.0

0 0.1

BACKTRACKING_RESIDUAL_LIMIT

0.0

0.0

0.002

 

Linear Variable

default/simple

moderate

complex

INNER_MAXIMUM

50

100

500

INNER_HCLOSE

0.001

0.01

0.1

INNER_RCLOSE

0.1

0.1

0.1

RCLOSE_OPTION

infinity-norm

infinity-norm

infinity-norm

LINEAR_ACCELERATION

CG

BICGSTAB

BICGSTAB

RELAXATION_FACTOR

0.0

0.97

0.0

PRECONDITIONER_LEVELS

0

0

5

PRECONDITIONER_DROP_TOLERANCE

0.0

0.0

0.0001

NUMBER_ORTHOGONALIZATIONS

0

0

2

SCALING_METHOD

NONE

NONE

NONE

REORDERING_METHOD

NONE

NONE

NONE