1 2 #ifndef __PETSCMATCOARSEN_H 3 #define __PETSCMATCOARSEN_H 4 #include <petscmat.h> 5 6 PETSC_EXTERN PetscFunctionList MatCoarsenList; 7 8 /*S 9 MatCoarsen - Object for managing the coarsening of a graph (symmetric matrix) 10 11 Level: advanced 12 13 Notes: This is used by the PCGAMG to generate coarser representations of an algebraic problem 14 15 Concepts: coarsen 16 17 .seealso: MatCoarsenCreate(), MatCoarsenType 18 S*/ 19 typedef struct _p_MatCoarsen* MatCoarsen; 20 21 /*J 22 MatCoarsenType - String with the name of a PETSc matrix coarsen algorithm 23 24 Level: beginner 25 26 .seealso: MatCoarsenCreate(), MatCoarsen 27 J*/ 28 typedef const char* MatCoarsenType; 29 #define MATCOARSENMIS "mis" 30 #define MATCOARSENHEM "hem" 31 32 /* linked list for aggregates */ 33 typedef struct _PetscCDIntNd{ 34 struct _PetscCDIntNd *next; 35 PetscInt gid; 36 }PetscCDIntNd; 37 38 /* only used by node pool */ 39 typedef struct _PetscCDArrNd{ 40 struct _PetscCDArrNd *next; 41 struct _PetscCDIntNd *array; 42 }PetscCDArrNd; 43 44 typedef struct _PetscCoarsenData{ 45 PetscCDArrNd pool_list; /* node pool */ 46 PetscCDIntNd *new_node; 47 PetscInt new_left; 48 PetscInt chk_sz; 49 PetscCDIntNd *extra_nodes; 50 PetscCDIntNd **array; /* Array of lists */ 51 PetscInt size; 52 Mat mat; /* cache a Mat for communication data */ 53 }PetscCoarsenData; 54 55 PETSC_EXTERN PetscErrorCode MatCoarsenCreate(MPI_Comm,MatCoarsen*); 56 PETSC_EXTERN PetscErrorCode MatCoarsenSetType(MatCoarsen,MatCoarsenType); 57 PETSC_EXTERN PetscErrorCode MatCoarsenSetAdjacency(MatCoarsen,Mat); 58 PETSC_EXTERN PetscErrorCode MatCoarsenSetGreedyOrdering(MatCoarsen,const IS); 59 PETSC_EXTERN PetscErrorCode MatCoarsenSetStrictAggs(MatCoarsen,PetscBool); 60 PETSC_EXTERN PetscErrorCode MatCoarsenGetData( MatCoarsen, PetscCoarsenData ** ); 61 PETSC_EXTERN PetscErrorCode MatCoarsenApply(MatCoarsen); 62 PETSC_EXTERN PetscErrorCode MatCoarsenDestroy(MatCoarsen*); 63 PETSC_EXTERN PetscErrorCode MatCoarsenRegister(const char[],PetscErrorCode (*)(MatCoarsen)); 64 PETSC_EXTERN PetscErrorCode MatCoarsenView(MatCoarsen,PetscViewer); 65 PETSC_EXTERN PetscErrorCode MatCoarsenSetFromOptions(MatCoarsen); 66 PETSC_EXTERN PetscErrorCode MatCoarsenGetType(MatCoarsen,MatCoarsenType*); 67 PETSC_STATIC_INLINE PetscErrorCode MatCoarsenViewFromOptions(MatCoarsen A,PetscObject obj,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,obj,name);} 68 69 PETSC_EXTERN PetscErrorCode PetscCDCreate(PetscInt,PetscCoarsenData**); 70 PETSC_EXTERN PetscErrorCode PetscCDDestroy(PetscCoarsenData*); 71 PETSC_EXTERN PetscErrorCode PetscCDIntNdSetID(PetscCDIntNd*,PetscInt); 72 PETSC_EXTERN PetscErrorCode PetscCDIntNdGetID(const PetscCDIntNd*,PetscInt*); 73 PETSC_EXTERN PetscErrorCode PetscCDAppendID(PetscCoarsenData*,PetscInt,PetscInt); 74 PETSC_EXTERN PetscErrorCode PetscCDAppendRemove(PetscCoarsenData*,PetscInt,PetscInt); 75 PETSC_EXTERN PetscErrorCode PetscCDAppendNode(PetscCoarsenData*,PetscInt,PetscCDIntNd*); 76 PETSC_EXTERN PetscErrorCode PetscCDRemoveNextNode(PetscCoarsenData*,PetscInt,PetscCDIntNd*); 77 PETSC_EXTERN PetscErrorCode PetscCDRemoveAllAt(PetscCoarsenData*,PetscInt); 78 PETSC_EXTERN PetscErrorCode PetscCDSizeAt(const PetscCoarsenData*,PetscInt,PetscInt*); 79 PETSC_EXTERN PetscErrorCode PetscCDEmptyAt(const PetscCoarsenData*,PetscInt,PetscBool*); 80 PETSC_EXTERN PetscErrorCode PetscCDSetChuckSize(PetscCoarsenData*,PetscInt); 81 PETSC_EXTERN PetscErrorCode PetscCDPrint(const PetscCoarsenData*,MPI_Comm); 82 PETSC_EXTERN PetscErrorCode PetscCDGetMIS(PetscCoarsenData*,IS*); 83 PETSC_EXTERN PetscErrorCode PetscCDGetMat(const PetscCoarsenData*,Mat*); 84 PETSC_EXTERN PetscErrorCode PetscCDSetMat(PetscCoarsenData*,Mat); 85 86 PETSC_EXTERN PetscErrorCode PetscCDGetHeadPos(const PetscCoarsenData*,PetscInt,PetscCDIntNd**); 87 PETSC_EXTERN PetscErrorCode PetscCDGetNextPos(const PetscCoarsenData*,PetscInt,PetscCDIntNd**); 88 PETSC_EXTERN PetscErrorCode PetscCDGetASMBlocks(const PetscCoarsenData*,const PetscInt,Mat,PetscInt*,IS**); 89 90 91 #endif 92