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