Parameter options for the algebraic multigrid preconditioner BoomerAMG.
Parameter options for the algebraic multigrid preconditioner BoomerAMG.
- amgMaxLevels xxx
- where xxx is an integer specifying the maximum
number of levels to be used for the grid hierarchy.
- amgCoarsenType xxx
- where xxx specifies one of {\sf falgout} or
{\sf ruge}, or {\sf default (CLJP)} coarsening for BoomerAMG.
- amgMeasureType xxx
- where xxx specifies one of {\sf local} or
or {\sf global}. This parameter affects how coarsening is
performed in parallel.
- amgRelaxType xxx
- where xxx is one of {\sf jacobi} (Damped Jacobi),
{\sf gs-slow} (sequential Gauss-Seidel), {\sf gs-fast}
(Gauss-Seidel on interior nodes), or {\sf hybrid}.
The default is {\sf hybrid}.
- amgNumSweeps xxx
- where xxx is an integer specifying the number of
pre- and post-smoothing at each level of BoomerAMG.
The default is two pre- and two post-smoothings.
- amgRelaxWeight xxx
- where xxx is a floating point number between
0 and 1 specifying the damping factor for BoomerAMG's damped
Jacobi and GS smoothers. The default value is 1.0.
- amgRelaxOmega xxx
- where xxx is a floating point number between
0 and 1 specifying the damping factor for BoomerAMG's hybrid
smoother for multiple processors. The default value is 1.0.
- amgStrongThreshold xxx
- where xxx is a floating point number between 0
and 1 specifying the threshold used to determine
strong coupling in BoomerAMG's coasening. The default
value is 0.25.
- amgSystemSize xxx
- where xxx is the degree of freedom per node.
- amgMaxLevels xxx
- where xxx is an integer specifying the maximum
number of iterations to be used during the solve phase.
- amgUseGSMG
- - tells BoomerAMG to use a different coarsening called
GSMG.
- amgGSMGNumSamples
- where xxx is the number of samples to generate
to determine how to coarsen for GSMG.
Alphabetic index