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 22 /* these 4 are all related to the method data and should be in the subctx */ 23 PetscInt data_sz; /* nloc*data_rows*data_cols */ 24 PetscInt data_cell_rows; 25 PetscInt data_cell_cols; 26 PetscInt orig_data_cell_rows; 27 PetscInt orig_data_cell_cols; 28 PetscReal eigtarget[2]; 29 PetscReal *data; /* [data_sz] blocked vector of vertex data on fine grid (coordinates/nullspace) */ 30 PetscReal *orig_data; /* cache data */ 31 32 PetscErrorCode (*graph)(PC, const Mat, Mat*); 33 PetscErrorCode (*coarsen)(PC, Mat*, PetscCoarsenData**); 34 PetscErrorCode (*prolongator)(PC, const Mat, const Mat, PetscCoarsenData*, Mat*); 35 PetscErrorCode (*optprol)(PC, const Mat, Mat*); 36 PetscErrorCode (*formkktprol)(PC, const Mat, const Mat, Mat*); 37 PetscErrorCode (*createdefaultdata)(PC, Mat); /* for data methods that have a default (SA) */ 38 39 void *subctx; 40 } PC_GAMG; 41 42 #define GAMGAGG "agg" 43 #define GAMGGEO "geo" 44 45 PetscErrorCode PCSetFromOptions_MG(PC); 46 PetscErrorCode PCReset_MG(PC); 47 48 /* hooks create derivied classes */ 49 PetscErrorCode PCCreateGAMG_GEO(PC pc); 50 PetscErrorCode PCCreateGAMG_AGG(PC pc); 51 52 PetscErrorCode PCSetFromOptions_GAMG(PC pc); 53 PetscErrorCode PCDestroy_GAMG(PC pc); 54 55 /* helper methods */ 56 PetscErrorCode PCGAMGCreateGraph(const Mat, Mat*); 57 PetscErrorCode PCGAMGFilterGraph(Mat*, const PetscReal, const PetscBool, const PetscInt); 58 PetscErrorCode PCGAMGGetDataWithGhosts(const Mat a_Gmat, const PetscInt a_data_sz, const PetscReal a_data_in[],PetscInt *a_stride, PetscReal **a_data_out); 59 60 #if defined PETSC_USE_LOG 61 /* #define PETSC_GAMG_USE_LOG */ 62 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}; 63 #if defined PETSC_GAMG_USE_LOG 64 extern PetscLogEvent petsc_gamg_setup_events[NUM_SET]; 65 #endif 66 extern PetscLogEvent PC_GAMGGgraph_AGG; 67 extern PetscLogEvent PC_GAMGGgraph_GEO; 68 extern PetscLogEvent PC_GAMGCoarsen_AGG; 69 extern PetscLogEvent PC_GAMGCoarsen_GEO; 70 extern PetscLogEvent PC_GAMGProlongator_AGG; 71 extern PetscLogEvent PC_GAMGProlongator_GEO; 72 extern PetscLogEvent PC_GAMGOptprol_AGG; 73 extern PetscLogEvent PC_GAMGKKTProl_AGG; 74 #endif 75 76 typedef struct _GAMGHashTable { 77 PetscInt *table; 78 PetscInt *data; 79 PetscInt size; 80 } GAMGHashTable; 81 82 extern PetscErrorCode GAMGTableCreate(PetscInt a_size, GAMGHashTable *a_tab); 83 extern PetscErrorCode GAMGTableDestroy(GAMGHashTable*); 84 extern PetscErrorCode GAMGTableAdd(GAMGHashTable *a_tab, PetscInt a_key, PetscInt a_data); 85 extern PetscErrorCode GAMGTableFind(GAMGHashTable *a_tab, PetscInt a_key, PetscInt *a_data); 86 87 #endif 88 89