Actual source code: gamg.h

petsc-3.3-p5 2012-12-01
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> 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: PetscReal *data; /* [data_sz] blocked vector of vertex data on fine grid (coordinates/nullspace) */ 25: PetscErrorCode (*graph)( PC, const Mat, Mat * ); 26: PetscErrorCode (*coarsen)( PC, Mat *, PetscCoarsenData** ); 27: PetscErrorCode (*prolongator)( PC, const Mat, const Mat, PetscCoarsenData *, Mat* ); 28: PetscErrorCode (*optprol)( PC, const Mat, Mat* ); 29: PetscErrorCode (*formkktprol)( PC, const Mat, const Mat, Mat* ); 30: PetscErrorCode (*createdefaultdata)( PC, Mat ); /* for data methods that have a default (SA) */ 31: void *subctx; 32: } PC_GAMG; 34: #define GAMGAGG "agg" 35: #define GAMGGEO "geo" 37: PetscErrorCode PCSetFromOptions_MG( PC ); 38: PetscErrorCode PCReset_MG( PC ); 40: /* hooks create derivied classes */ 41: PetscErrorCode PCCreateGAMG_GEO( PC pc ); 42: PetscErrorCode PCCreateGAMG_AGG( PC pc ); 44: PetscErrorCode PCSetFromOptions_GAMG( PC pc ); 45: PetscErrorCode PCDestroy_GAMG(PC pc); 47: /* helper methods */ 48: PetscErrorCode PCGAMGCreateGraph( const Mat, Mat * ); 49: PetscErrorCode PCGAMGFilterGraph( Mat *, const PetscReal, const PetscBool, const PetscInt ); 50: PetscErrorCode PCGAMGGetDataWithGhosts( const Mat a_Gmat, const PetscInt a_data_sz, const PetscReal a_data_in[], 51: PetscInt *a_stride, PetscReal **a_data_out ); 53: #if defined PETSC_USE_LOG 54: /* #define PETSC_GAMG_USE_LOG */ 55: 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}; 56: #if defined PETSC_GAMG_USE_LOG 57: extern PetscLogEvent petsc_gamg_setup_events[NUM_SET]; 58: #endif 59: extern PetscLogEvent PC_GAMGGgraph_AGG; 60: extern PetscLogEvent PC_GAMGGgraph_GEO; 61: extern PetscLogEvent PC_GAMGCoarsen_AGG; 62: extern PetscLogEvent PC_GAMGCoarsen_GEO; 63: extern PetscLogEvent PC_GAMGProlongator_AGG; 64: extern PetscLogEvent PC_GAMGProlongator_GEO; 65: extern PetscLogEvent PC_GAMGOptprol_AGG; 66: extern PetscLogEvent PC_GAMGKKTProl_AGG; 67: #endif 69: typedef struct _GAMGHashTable{ 70: PetscInt *table; 71: PetscInt *data; 72: PetscInt size; 73: }GAMGHashTable; 75: extern PetscErrorCode GAMGTableCreate( PetscInt a_size, GAMGHashTable *a_tab ); 76: extern PetscErrorCode GAMGTableDestroy( GAMGHashTable * ); 77: extern PetscErrorCode GAMGTableAdd( GAMGHashTable *a_tab, PetscInt a_key, PetscInt a_data ); 78: extern PetscErrorCode GAMGTableFind( GAMGHashTable *a_tab, PetscInt a_key, PetscInt *a_data ); 80: #endif