Structure storing all metadata related to the resolution of a saddle-point linear system. A saddle-point system is depicted as. More...

#include <cs_param_saddle.h>

Collaboration diagram for cs_param_saddle_t:

Data Fields
int	verbosity

char *	name

const cs_param_sles_t *	block11_sles_param

void *	context

Main parameter settings
Set of parameters to drive the resolution of a saddle-point system
cs_param_solver_class_t	solver_class

cs_param_saddle_solver_t	solver

cs_param_saddle_precond_t	precond

cs_param_convergence_t	cvg_param

Schur complement approximation
Set of parameters to drive the resolution of the pressure-related block. This is often a Schur complement approximation to B.A^-1.Bt
cs_param_saddle_schur_approx_t	schur_approx

cs_param_sles_t *	schur_sles_param

Detailed Description

Structure storing all metadata related to the resolution of a saddle-point linear system. A saddle-point system is depicted as.

| A : Bt | where A is the (1,1) block |--—:--—| Bt is the (1,2) block which the transposed operator | B : 0 | w.r.t. B, the (2,1)-block

According t the choice of the solver, the saddle-point system is totally or partially assembled.

Field Documentation

◆ block11_sles_param

block11_sles_param

Set of parameters used to solve (1,1)-block i.e. the A matrix. This is shared with the cs_equation_param_t structure.

◆ context

void* context

◆ cvg_param

cvg_param

Structure storing the parameters to know if an iterative process has to stop (convergence or divergence). These criteria are related the iterative algorithm used to solve the saddle-point system. This is the case for instance with an Uzawa or GKB algorithm.

◆ name

name

name of the saddle system or NULL (not mandatory). If NULL, the name of the (1,1)-block is used.

◆ precond

precond

Type of preconditioner for the saddle-point system which is viewed as a 2x2 block matrix.

◆ schur_approx

schur_approx

Choice of the way of preconditioning the schur approximation

◆ schur_sles_param

schur_sles_param

Set of parameters used to solve the Schur complement if needed. This depends on the type of Schur approximation which has been chosen.

◆ solver

solver

Type of solver to solve the saddle-point system If solver is set to CS_PARAM_SADDLE_N_SOLVERS, then there is no need to solve a saddle-point system.

◆ solver_class

solver_class

class of SLES to consider (advanced usage)

◆ verbosity

verbosity

verbosity (level of information displayed)

The documentation for this struct was generated from the following file:

src/alge/cs_param_saddle.h

Data Fields