/usr/include/trilinos/ml_amg.h is in libtrilinos-ml-dev 12.12.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* See the file COPYRIGHT for a complete copyright notice, contact person */
/* and disclaimer. */
/* ************************************************************************* */
/* ************************************************************************* */
/* data structure to hold AMG information */
/* ************************************************************************* */
/* Author : Charles Tong (LLNL) */
/* Date : October, 2000 */
/* ************************************************************************* */
#ifndef __MLAMGH__
#define __MLAMGH__
#include <stdio.h>
/* #include <stdlib.h> */
#include "ml_common.h"
#include "ml_defs.h"
/* ************************************************************************* */
/* local defines */
/* ------------------------------------------------------------------------- */
#define ML_AMG_MIS 21
#define ML_AMG_SCALAR 0
#define ML_AMG_SYSTEM_UNKNOWN 1
#define ML_AMG_SYSTEM_NODAL 2
#define ML_AMG_SM_JACOBI 11
#define ML_AMG_SM_GS 12
#define ML_AMG_SM_SGS 13
#define ML_AMG_SM_VBJACOBI 14
#define ML_AMG_SM_VBGS 15
#define ML_AMG_SM_VBSGS 16
#define ML_AMG_SM_ASCHWARZ 17
#define ML_AMG_SM_MSCHWARZ 18
#define ML_AMG_SM_SUPERLU 19
/* ************************************************************************* */
/* other ML include files */
/* ------------------------------------------------------------------------- */
#include "ml_defs.h"
#include "ml_comm.h"
#include "ml_memory.h"
#include "ml_operator.h"
/* ************************************************************************* */
/* definition of the AMG structure */
/* ------------------------------------------------------------------------- */
typedef struct ML_AMG_Struct
{
int ML_id;
double print_flag;
int max_coarse_size; /** maximum size of coarsest grid */
double threshold; /** for pruning matrix */
double curr_threshold; /** adjusted for levels */
int coarsen_scheme; /** MIS */
int amg_scheme; /** scalar(0),unknown(1),system(2)*/
int num_PDE_eqns; /** block size */
int *blk_info; /** store dof information */
int max_levels; /** maximum number of levels */
int begin_level; /** finest grid level */
int cur_level; /** temporary variable */
double operator_complexity; /** sum of nnz for all A's */
double fine_complexity; /** nnz of the finest A */
ML_Operator *fine_Amat;
int presmoother_type;
int postsmoother_type;
int presmoother_ntimes;
int postsmoother_ntimes;
double presmoother_jacobiwt;
double postsmoother_jacobiwt;
int coarse_solver_type;
int coarse_solver_ntimes;
double coarse_solver_jacobiwt;
int *pre_aztec_options;
double *pre_aztec_params;
int *pre_aztec_proc_config;
double *pre_aztec_status;
void (*pre_function)(int);
/* Trying to avoid including az_aztec.h
void (*pre_function)(double *, int *, int *, double *,
struct AZ_MATRIX_STRUCT *,
struct AZ_PREC_STRUCT *);
*/
int *post_aztec_options;
double *post_aztec_params;
int *post_aztec_proc_config;
double *post_aztec_status;
void (*post_function)(int);
/* Trying to avoid including az_aztec.h
void (*post_function)(double *, int *, int *, double *,
struct AZ_MATRIX_STRUCT *,
struct AZ_PREC_STRUCT *);
*/
} ML_AMG;
/* ************************************************************************* */
/* ************************************************************************* */
/* functions to manipulate the AMG data structure */
/* ------------------------------------------------------------------------- */
#ifndef ML_CPP
#ifdef __cplusplus
extern "C"
{
#endif
#endif
/* ------------------------------------------------------------------------- */
/* constructor/destructor and level control */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Create( ML_AMG ** );
extern int ML_AMG_Destroy( ML_AMG ** );
extern int ML_AMG_Set_OutputLevel( ML_AMG *amg, double outputlevel );
extern int ML_AMG_Set_MaxLevels( ML_AMG *amg, int level );
extern int ML_AMG_Set_CurrentLevel( ML_AMG *amg, int level );
extern int ML_AMG_Set_StartLevel( ML_AMG *amg, int level );
/* ------------------------------------------------------------------------- */
/* control when to stop coarsening */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Set_MaxCoarseSize( ML_AMG *amg, int size );
/* ------------------------------------------------------------------------- */
/* different AMG scheme (scalar, unknown, system) */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Set_AMGScheme_Scalar( ML_AMG *amg );
extern int ML_AMG_Set_AMGScheme_SystemUnknown( ML_AMG *amg, int );
extern int ML_AMG_Set_AMGScheme_SystemNodal( ML_AMG *amg, int );
/* ------------------------------------------------------------------------- */
/* different parallel coarsening schemes */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Set_CoarsenScheme_MIS( ML_AMG *amg );
/* ------------------------------------------------------------------------- */
/* set threshold for pruning matrix graph */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Set_Threshold( ML_AMG *amg, double epsilon );
/* ------------------------------------------------------------------------- */
/* functions for performing coarsening */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Coarsen(ML_AMG *amg, ML_Operator *Amatrix,
ML_Operator **Pmatrix, ML_Comm *comm);
extern int ML_AMG_CoarsenMIS(ML_AMG *ml_amg,ML_Operator *Amatrix,
ML_Operator **Pmatrix, ML_Comm *comm);
/* ------------------------------------------------------------------------- */
/* miscellaneous functions */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Set_Smoother(ML_AMG *ml_amg,int smoother_type,int pre_or_post,
ML_Operator *Amatrix,int ntimes, double weight);
extern int ML_AMG_Set_SmootherAztec(ML_AMG *ml_amg, int pre_or_post,
int *options, double *params, int *proc_config,
double *status, void (*post_function)(int)
/* Trying to avoid including az_aztec.h
void (*post_function)(double *,int *,int *,double *,
struct AZ_MATRIX_STRUCT*,struct AZ_PREC_STRUCT*)*/);
extern int ML_AMG_Set_CoarseSolve(ML_AMG *ml_amg, int solve_type, int ntimes,
double weight);
/* ------------------------------------------------------------------------- */
/* miscellaneous functions */
/* ------------------------------------------------------------------------- */
extern int ML_AMG_Print(ML_AMG *);
extern int ML_AMG_Print_Complexity(ML_AMG *);
extern int ML_AMG_LabelVertices(int nvertices, int *vlist, int,
char *state, char *vtype, int nvert, int *rowptr,
int *columns, int mypid, int **proclist, int Nneigh,
int **sndbuf, int *neigh, int *sndleng, int Nneigh2,
int **rcvbuf, int *neigh2, int *rcvleng, int **recvlist,
ML_Comm *comm, int *CF_array);
int ML_AMG_GetCommInfo(ML_CommInfoOP *mat_comm, int Nrows, int *A_Nneigh,
int **A_neigh, int ***A_sendlist, int ***A_recvlist,
int ***A_sndbuf, int ***A_rcvbuf, int **A_sndleng,
int **A_rcvleng, int *Nghost);
int ML_AMG_UpdateVertexStates(int N_remaining_vertices, char vertex_state[],
int recv_cnt, int recv_proc[], int recv_leng[], int **recv_buf,
int **recv_list, int proc_flag[], int *NremainingRcvProcs,
int send_cnt, int send_proc[], int send_leng[], int **send_buf,
int *send_flag, USR_REQ *Request, ML_Comm *comm, int msgtype);
int ML_AMG_CompatibleRelaxation(int *CF_array,
ML_Operator *Amat, int *Ncoarse, int limit);
#ifndef ML_CPP
#ifdef __cplusplus
}
#endif
#endif
#endif
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