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