petscmain 20210420
MatMPIAIJGetLocalMatMerge
Creates a SeqAIJ from a MATMPIAIJ matrix by taking all its local rows and putting them into a sequential matrix with mlocal rows and n columns. Where n is the sum of the number of columns of the diagonal and offdiagonal part
Synopsis
#include "petscmat.h"
PetscErrorCode MatMPIAIJGetLocalMatMerge(Mat A,MatReuse scall,IS *glob,Mat *A_loc)
Not Collective
Input Parameters
Output Parameter
 glob   sequential IS with global indices associated with the columns of the local sequential matrix generated (can be NULL)

 A_loc   the local sequential matrix generated

Notes
This is different from MatMPIAIJGetLocalMat() since the first columns in the returning matrix are those associated with the diagonal part, then those associated with the offdiagonal part (in its local ordering)
See Also
MatGetOwnershipRange(), MatMPIAIJGetLocalMat(), MatMPIAIJGetLocalMatCondensed()
Level
developer
Location
src/mat/impls/aij/mpi/mpiaij.c
Implementations
MatMPIAIJGetLocalMatMerge_MPIAIJCUSPARSE in src/mat/impls/aij/mpi/mpicusparse/mpiaijcusparse.cu
Index of all Mat routines
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Index of all manual pages