nonsymmetric dynamics

Jacobi Point Jacobi. Specify damping with coarse: damping factor.
Gauss-Seidel Point Gauss-Seidel. Specify damping with coarse: damping
factor.
symmetric Gauss-Seidel Symmetric point Gauss-Seidel. Specify damping with coarse:
damping factor.
Chebyshev Use degree coarse: sweeps Chebyshev polynomial as a solver.
Hiptmair Two-stage Hiptmair smoother. Take coarse: node sweeps
(or coarse: edge sweeps) iterations with method coarse:
subsmoother type to solve the nodal (or edge) subproblem.
Amesos-KLU Use Klu through Amesos. Coarse grid problem is shipped to
proc 0, solved, and solution is broadcast
Amesos-Superlu
Use SuperLU, version 3.0, through Amesos.
Amesos-UMFPACK
Use Umfpack through Amesos. Coarse grid problem is shipped
to proc 0, solved, and solution is broadcasted.
Amesos-Superludist Use SuperLU dist through Amesos.
Amesos-MUMPS
Use double precision version of Mumps through Amesos.
user-defined User-defined smoothing function with prototype int
(*)(ML Smoother *, int inLength, double *invec,
int outLength, double *outvec). See ML example
ml user smoothing.cpp.
SuperLU
Use ML interface to SuperLU(deprecated).
Table 5: ML Epetra::MultiLevelPreconditioner: Commonly used coarse matrix solvers. Unless otherwise
noted, number of sweeps is specified with coarse: sweeps. To use Amesos solvers, ML must be configured
with with-ml amesos, and Amesos must be properly configured. In Gauss-Seidel and symmetric
Gauss-Seidel, Ifpack implementation is automatically used (if available) for matrices of type Epetra
CrsMatrix.
// Zoltan requires coordinates
double *xcoord, *ycoord, *zcoord;
// user must load the coordinates, of coarse ...
MLList.set("x-coordinates", xcoord);
MLList.set("y-coordinates", xcoord);
The following code demonstrates repartitioning for a system arising from the eddy current
approximations to Maxwell’s equations.
Teuchos::ParameterList MLList;
// these correspond to the main edge matrix
MLList.set("repartition: enable",1);
MLList.set("repartition: max min ratio",1.3);
MLList.set("repartition: min per proc",1000);
MLList.set("repartition: partitioner","Zoltan");
// Zoltan requires coordinates
double *xcoord, *ycoord, *zcoord;
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