LINEQN_scaling
choose the way how to scale/normalize the linear systems (UCV)
Currently, this parameter is implemented only if LINEQN_solver and/or LINEQN_solver_ScalarSystems is set to 'SAMG'.
Default:
LINEQN_scaling = 'NORM'
option | description |
---|
'NORM' | Normalize, i.e. multiply the rows of the matrix such that the diagonal element becomes 1. |
'PODI' | Multiply the row of the matrix with -1 if the original diagonal entry is negative. |
'NONE' | Do not normalize at all, i.e. keep the matrix in its original state. |
'NATV' | Try to construct the vp- system in the sense of the saddle point method: |
| Try to establish ( A B \\ B' C ), where B' is approximately the transpose of B. It would exactly be the transpose, if B was antisymmetric. B contains the d/dx, d/dy, d/dz operators. In MESHFREE, they are not strictily antisymmetric. |