#include <ml_aggregate.h>

Collaboration diagram for ML_Aggregate_Struct:

Public Attributes
int	ML_id

double	print_flag

int	max_coarse_size

int	ordering

int	min_nodes_per_aggregate

int	max_neigh_already_selected

double	threshold

double	curr_threshold

double	drop_tol_for_smoothing

int	attach_scheme

double	smoothP_damping_factor

int *	smoothP_damping_sweeps

int	smoothP_type

int	coarsen_scheme

int *	coarsen_scheme_level

int	num_PDE_eqns

int	nullspace_dim

double *	nullspace_vect

int	nullspace_corrupted

int *	aggr_count

int	keep_agg_information

int **	aggr_info

int	max_levels

int	begin_level

int	cur_level

double	operator_complexity

double	fine_complexity

int	nvblocks

int *	vblock_info

int	keep_P_tentative

struct ML_Operator_Struct **	P_tentative

int	smooth_existing_P_tentative

int	use_transpose

int	Restriction_smoothagg_transpose

void *	aggr_options

void *	aggr_viz_and_stats

void *	field_of_values

int	block_scaled_SA

double	phase3_agg_creation

double **	nodal_coord

int	N_dimensions

void *	vblock_data

int	minimizing_energy

int	cheap_minimizing_energy

double	minimizing_energy_droptol

double *	old_RowOmegas

int	coarsen_rate

int	semicoarsen_levels

char	semicoarsen_coordinate

double	rowsum_threshold

int	do_qr

int	coarsen_partial_dirichlet_dofs

Detailed Description

definition of the aggregate structure

Member Data Documentation

int* ML_Aggregate_Struct::aggr_count

no. aggregates at each level

int** ML_Aggregate_Struct::aggr_info

node to aggregate map

void* ML_Aggregate_Struct::aggr_options

option about METIS and ParMETIS

void* ML_Aggregate_Struct::aggr_viz_and_stats

information about the aggregates only if the user explicitely < requires them

int ML_Aggregate_Struct::attach_scheme

aggregate shape control

int ML_Aggregate_Struct::begin_level

finest grid level

int ML_Aggregate_Struct::block_scaled_SA

= 1 indicates that the prolongator smoother should use block diagonal scaling (blocksize = num_PDE_eqns)

int ML_Aggregate_Struct::coarsen_partial_dirichlet_dofs

interpolate Dirichlet directions in multiple PDEs per node case

int ML_Aggregate_Struct::coarsen_scheme

Uncoupled, Coupled, MIS

int ML_Aggregate_Struct::cur_level

temporary variable

double ML_Aggregate_Struct::curr_threshold

adjusted for levels

int ML_Aggregate_Struct::do_qr

should we do a qr?

double ML_Aggregate_Struct::drop_tol_for_smoothing

self-explanatory

double ML_Aggregate_Struct::fine_complexity

nnz of the finest A

int ML_Aggregate_Struct::keep_agg_information

1: keep aggr_info otherwise: free it

int ML_Aggregate_Struct::keep_P_tentative

keeping tentative prolongator

int ML_Aggregate_Struct::max_coarse_size

maximum size of coarsest grid

int ML_Aggregate_Struct::max_levels

maximum number of levels

int ML_Aggregate_Struct::max_neigh_already_selected

complexity control

int ML_Aggregate_Struct::min_nodes_per_aggregate

aggregate size control

double** ML_Aggregate_Struct::nodal_coord

                 Coordinates of fine-grid nodes

and aggregates

int ML_Aggregate_Struct::nullspace_corrupted

indicates whether fine grid nullspace has been overwritten

int ML_Aggregate_Struct::nullspace_dim

self-explanatory

double* ML_Aggregate_Struct::nullspace_vect

for null space vectors

int ML_Aggregate_Struct::num_PDE_eqns

block size

int ML_Aggregate_Struct::nvblocks

for variable blocks (finest)

double ML_Aggregate_Struct::operator_complexity

sum of nnz for all A's

int ML_Aggregate_Struct::ordering

natural, random, graph

struct ML_Operator_Struct** ML_Aggregate_Struct::P_tentative

so it can be reused later.

double ML_Aggregate_Struct::phase3_agg_creation

Steers how the MIS and Uncoupled handle phase 3 of aggregation. Values near 0 create few additional aggregates.Large values create many additional aggregates. Convergence can be improve convergence by new aggregates but nonzero fill-in increases on coarse meshes. Default: .5

int ML_Aggregate_Struct::Restriction_smoothagg_transpose

smoothed aggregation on A^T

double ML_Aggregate_Struct::rowsum_threshold

for dropping sub-CFL rows in reaction-diffusion

int ML_Aggregate_Struct::smooth_existing_P_tentative

already have P tent, don't create it

double ML_Aggregate_Struct::smoothP_damping_factor

for prolongator smoother

int* ML_Aggregate_Struct::smoothP_damping_sweeps

#prolongator smoother sweeps

int ML_Aggregate_Struct::smoothP_type

point, block

double ML_Aggregate_Struct::threshold

for pruning matrix

int ML_Aggregate_Struct::use_transpose

Used to build restriction by doing

void* ML_Aggregate_Struct::vblock_data

holds data structure aggr_vblock

int* ML_Aggregate_Struct::vblock_info

for variable blocks (finest)

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

ml_aggregate.h

Public Attributes

Detailed Description

Member Data Documentation