1 #if !defined(__GAMG_IMPL) 2 #define __GAMG_IMPL 3 #include <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 PetscInt min_eq_proc; 15 PetscInt coarse_eq_limit; 16 PetscReal threshold; /* common quatity to many AMG methods so keep it up here */ 17 PetscInt verbose; 18 PetscInt emax_id; 19 PetscInt col_bs_id; 20 PetscInt data_sz; /* these 4 things are all related to the method data and should be in the subctx */ 21 PetscInt data_rows; 22 PetscInt data_cols; 23 PetscReal *data; /* blocked vector of vertex data on fine grid (coordinates) */ 24 PetscErrorCode (*createprolongator)( PC, const Mat A, const PetscReal [], Mat *P, PetscReal** ); 25 PetscErrorCode (*createdefaultdata)( PC ); 26 27 void *subctx; 28 } PC_GAMG; 29 30 #if defined(PETSC_USE_DYNAMIC_LIBRARIES) 31 # define PCGAMGRegisterDynamic(a,b,c,d) PCGAMGRegister(a,b,c,0) 32 #else 33 # define PCGAMGRegisterDynamic(a,b,c,d) PCGAMGRegister(a,b,c,d) 34 #endif 35 36 PetscErrorCode PCGAMGRegister(const char *implname,const char *path,const char *fname,PetscErrorCode (*cfunc)(PC)); 37 #define GAMGAGG "agg" 38 #define GAMGGEO "geo" 39 40 /* Private context for the GAMG preconditioner */ 41 typedef struct{ 42 PetscInt lid; /* local vertex index */ 43 PetscInt degree; /* vertex degree */ 44 } GAMGNode; 45 46 PetscErrorCode PCSetFromOptions_MG(PC); 47 PetscErrorCode PCReset_MG(PC); 48 49 /* hooks create derivied classes */ 50 PetscErrorCode PCCreateGAMG_GEO( PC pc ); 51 PetscErrorCode PCCreateGAMG_AGG( PC pc ); 52 53 PetscErrorCode PCSetFromOptions_GAMG( PC pc ); 54 PetscErrorCode PCDestroy_GAMG(PC pc); 55 56 PetscErrorCode PCGAMGcreateProl_AGG( PC, const Mat, const PetscReal [], Mat *, PetscReal **); 57 PetscErrorCode PCGAMGcreateProl_GEO( PC, const Mat, const PetscReal [], Mat *, PetscReal **); 58 /* helper methods */ 59 PetscErrorCode getDataWithGhosts( const Mat a_Gmat, const PetscInt a_data_sz, const PetscReal a_data_in[], 60 PetscInt *a_stride, PetscReal **a_data_out ); 61 PetscErrorCode maxIndSetAgg( const IS a_perm, const Mat a_Gmat, const Mat a_Auxmat, 62 const PetscBool a_strict_aggs, IS *a_selected, IS *a_locals_llist ); 63 PetscErrorCode createGraph(PC a_pc, const Mat a_Amat, Mat *, Mat *, IS * ); 64 65 #if defined PETSC_USE_LOG 66 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}; 67 extern PetscLogEvent gamg_setup_events[NUM_SET]; 68 #endif 69 70 #endif 71 72