1 #if !defined(__GAMG_IMPL) 2 #define __GAMG_IMPL 3 #include <petsc-private/pcimpl.h> 4 #include <../src/ksp/pc/impls/mg/mgimpl.h> /*I "petscksp.h" I*/ 5 #include <../src/mat/impls/aij/seq/aij.h> 6 #include <../src/mat/impls/aij/mpi/mpiaij.h> 7 8 struct _PCGAMGOps { 9 PetscErrorCode (*graph)(PC, const Mat, Mat*); 10 PetscErrorCode (*coarsen)(PC, Mat*, PetscCoarsenData**); 11 PetscErrorCode (*prolongator)(PC, const Mat, const Mat, PetscCoarsenData*, Mat*); 12 PetscErrorCode (*optprol)(PC, const Mat, Mat*); 13 PetscErrorCode (*formkktprol)(PC, const Mat, const Mat, Mat*); 14 PetscErrorCode (*createdefaultdata)(PC, Mat); /* for data methods that have a default (SA) */ 15 PetscErrorCode (*setfromoptions)(PC); 16 PetscErrorCode (*destroy)(PC); 17 }; 18 19 /* Private context for the GAMG preconditioner */ 20 typedef struct gamg_TAG { 21 PetscInt Nlevels; 22 PetscInt setup_count; 23 PetscBool repart; 24 PetscBool reuse_prol; 25 PetscBool use_aggs_in_gasm; 26 PetscInt min_eq_proc; 27 PetscInt coarse_eq_limit; 28 PetscReal threshold; /* common quatity to many AMG methods so keep it up here */ 29 PetscInt verbose; 30 PetscInt emax_id; /* stashing places */ 31 32 /* these 4 are all related to the method data and should be in the subctx */ 33 PetscInt data_sz; /* nloc*data_rows*data_cols */ 34 PetscInt data_cell_rows; 35 PetscInt data_cell_cols; 36 PetscInt orig_data_cell_rows; 37 PetscInt orig_data_cell_cols; 38 PetscReal eigtarget[2]; 39 PetscReal *data; /* [data_sz] blocked vector of vertex data on fine grid (coordinates/nullspace) */ 40 PetscReal *orig_data; /* cache data */ 41 42 struct _PCGAMGOps *ops; 43 char *gamg_type_name; 44 45 void *subctx; 46 } PC_GAMG; 47 48 PetscErrorCode PCSetFromOptions_MG(PC); 49 PetscErrorCode PCReset_MG(PC); 50 51 /* hooks create derivied classes */ 52 PetscErrorCode PCCreateGAMG_GEO(PC pc); 53 PetscErrorCode PCCreateGAMG_AGG(PC pc); 54 55 PetscErrorCode PCSetFromOptions_GAMG(PC pc); 56 PetscErrorCode PCDestroy_GAMG(PC pc); 57 58 /* helper methods */ 59 PetscErrorCode PCGAMGCreateGraph(const Mat, Mat*); 60 PetscErrorCode PCGAMGFilterGraph(Mat*, const PetscReal, const PetscBool, const PetscInt); 61 PetscErrorCode PCGAMGGetDataWithGhosts(const Mat a_Gmat, const PetscInt a_data_sz, const PetscReal a_data_in[],PetscInt *a_stride, PetscReal **a_data_out); 62 63 #if defined PETSC_USE_LOG 64 /* #define PETSC_GAMG_USE_LOG */ 65 enum tag {SET1,SET2,GRAPH,GRAPH_MAT,GRAPH_FILTER,GRAPH_SQR,SET4,SET5,SET6,FIND_V,SET7,SET8,SET9,SET10,SET11,SET12,SET13,SET14,SET15,SET16,NUM_SET}; 66 #if defined PETSC_GAMG_USE_LOG 67 PETSC_INTERN PetscLogEvent petsc_gamg_setup_events[NUM_SET]; 68 #endif 69 PETSC_INTERN PetscLogEvent PC_GAMGGgraph_AGG; 70 PETSC_INTERN PetscLogEvent PC_GAMGGgraph_GEO; 71 PETSC_INTERN PetscLogEvent PC_GAMGCoarsen_AGG; 72 PETSC_INTERN PetscLogEvent PC_GAMGCoarsen_GEO; 73 PETSC_INTERN PetscLogEvent PC_GAMGProlongator_AGG; 74 PETSC_INTERN PetscLogEvent PC_GAMGProlongator_GEO; 75 PETSC_INTERN PetscLogEvent PC_GAMGOptprol_AGG; 76 PETSC_INTERN PetscLogEvent PC_GAMGKKTProl_AGG; 77 #endif 78 79 typedef struct _GAMGHashTable { 80 PetscInt *table; 81 PetscInt *data; 82 PetscInt size; 83 } GAMGHashTable; 84 85 PETSC_EXTERN PetscErrorCode GAMGTableCreate(PetscInt a_size, GAMGHashTable *a_tab); 86 PETSC_EXTERN PetscErrorCode GAMGTableDestroy(GAMGHashTable*); 87 PETSC_EXTERN PetscErrorCode GAMGTableAdd(GAMGHashTable *a_tab, PetscInt a_key, PetscInt a_data); 88 PETSC_EXTERN PetscErrorCode GAMGTableFind(GAMGHashTable *a_tab, PetscInt a_key, PetscInt *a_data); 89 90 #endif 91 92