petsc-3.14.6 2021-03-30
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MatIncreaseOverlap

 Given a set of submatrices indicated by index sets, replaces the index sets by larger ones that represent submatrices with additional overlap.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatIncreaseOverlap(Mat mat,PetscInt n,IS is[],PetscInt ov)
Collective on Mat

Input Parameters

mat - the matrix
n - the number of index sets
is - the array of index sets (these index sets will changed during the call)
ov - the additional overlap requested

Options Database

-mat_increase_overlap_scalable - use a scalable algorithm to compute the overlap (supported by MPIAIJ matrix)

See Also

MatCreateSubMatrices()

Level

developer

Location

src/mat/interface/matrix.c

Implementations

MatIncreaseOverlap_MPIAIJ in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Scalable in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Once_Scalable in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Receive_Scalable in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Send_Scalable in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Local_Scalable in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Once in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Local in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_MPIAIJ_Receive in src/mat/impls/aij/mpi/mpiov.c
MatIncreaseOverlap_SeqAIJ in src/mat/impls/aij/seq/aij.c
MatIncreaseOverlap_MPIBAIJ in src/mat/impls/baij/mpi/baijov.c
MatIncreaseOverlap_MPIBAIJ_Once in src/mat/impls/baij/mpi/baijov.c
MatIncreaseOverlap_MPIBAIJ_Local in src/mat/impls/baij/mpi/baijov.c
MatIncreaseOverlap_MPIBAIJ_Receive in src/mat/impls/baij/mpi/baijov.c
MatIncreaseOverlap_SeqBAIJ in src/mat/impls/baij/seq/baij2.c
MatIncreaseOverlap_MPISBAIJ in src/mat/impls/sbaij/mpi/sbaijov.c
MatIncreaseOverlap_MPISBAIJ_Once in src/mat/impls/sbaij/mpi/sbaijov.c
MatIncreaseOverlap_MPISBAIJ_Local in src/mat/impls/sbaij/mpi/sbaijov.c
MatIncreaseOverlap_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij2.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages