MatAIJGetLocalMat#

Creates a MATSEQAIJ from a MATAIJ matrix by taking its local rows and putting them into a sequential matrix with mlocal rows and n columns. Where mlocal is obtained with MatGetLocalSize() and n is the global column count obtained with MatGetSize()

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatAIJGetLocalMat(Mat A, Mat *A_loc)

Not Collective

Input Parameter#

  • A - the matrix

Output Parameter#

  • A_loc - the local sequential matrix generated

Notes#

In other words combines the two parts of a parallel MATMPIAIJ matrix on each process to a single matrix.

Destroy the matrix with MatDestroy()

See Also#

Matrices, Mat, MatMPIAIJGetLocalMat()

Level#

developer

Location#

src/mat/impls/aij/mpi/mpiaij.c

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Index of all manual pages