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PLTMG Parameters

IFIRST Definitions


IFIRST option
0 no initialization
1 initialize for piecewise linear elements
2 initialize for piecewise quadratic elements
3 initialize for piecewise cubic elements
4 initialize for piecewise quartic elements
5 initialize for piecewise quintic elements
6 initialize for piecewise polynomials of degree 6
7 initialize for piecewise polynomials of degree 7
8 initialize for piecewise polynomials of degree 8
9 initialize for piecewise polynomials of degree 9



IPROB Definitions


IPROB problem option
1 elliptic boundary value problem
2 obstacle problem
3 continuation problem
4 parameter identification problem
5 optimal control problem
-1 DD solve for elliptic boundary value problem
-2 DD solve for obstacle problem
-3 DD solve for continuation problem
-4 DD solve for parameter identification problem
-5 DD solve for optimal control problem



ITASK Definitions


ITASK IPROB option
0 1 default
9   use functional
0 2 default
0 3 continue to the nearest target point
1   continue to the nearest target or singular point
2   switch branches at a bifurcation point
3   switch $ \lambda$ and/or $ \rho$ ; initialize with $ \lambda$ fixed
4   switch $ \lambda$ and/or $ \rho$ ; initialize with $ \rho$ fixed
5   solve with $ \sigma=0$ , $ \theta=0$ ($ \lambda$ fixed)
6   solve with $ \sigma=0$ , $ \theta=2$ ($ \rho$ fixed)
7   solve with $ \sigma=0$ , $ \theta=1$
0 4 default
8   switch $ \lambda$ and initialize
0 5 default



ISPD Definitions


ISPD storage/iteration options
0 nonsymmetric/biconjugate gradient
1 symmetric/conjugate gradient



METHOD Definitions


METHOD preconditioner
1 ILU smoother, HB coarse space
-1 ILU smoother
2 SGS smoother, HB coarse space
-2 SGS smoother


next up previous
Next: TRIPLT Parameters Up: quick_ref Previous: TRIGEN Parameters
Randolph Bank 2012-05-17