History log of /petsc/src/mat/tests/output/ex140_1.out (Results 1 – 4 of 4)
Revision Date Author Comments
# e8c0849a 20-Nov-2025 Satish Balay <balay@mcs.anl.gov>

Merge branch 'barry/2025-10-18/optimize-aij-ops' into 'main'

Refactor handling of diagonal marking in *AIJ and SELL matrices

See merge request petsc/petsc!8797


# 421480d9 19-Oct-2025 Barry Smith <bsmith@mcs.anl.gov>

- Replace MatMissingDiagonal() and MatMarkDiagonals_SeqXXX() with MatGetDiagonalMarkers_SeqXXX()

- Mat_SeqXXX->diag is not automatically created during MatAssemblyEnd() saving memory and time

- Replace MatMissingDiagonal() and MatMarkDiagonals_SeqXXX() with MatGetDiagonalMarkers_SeqXXX()

- Mat_SeqXXX->diag is not automatically created during MatAssemblyEnd() saving memory and time

- Accessing Mat_SeqXXX->diag now requires the use of MatGetDiagonalMarkers_SeqXXX() except when the current values are known to be correct; for example during numerical factorizations and solves

- Mat_SeqXXX->diag is now never shared among matrices; hence the free_diag flag is gone. That was always a risky proposition since any of the owning matrices could chang the values thus making them incorrect for other owners.

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# 2158cd20 31-Dec-2021 Satish Balay <balay@mcs.anl.gov>

Merge branch 'stefanozampini/petsc4py' into 'main'

Some work on petsc4py

See merge request petsc/petsc!4644


# c786d857 21-Oct-2021 Stefano Zampini <stefano.zampini@gmail.com>

MATPYTHON: implement MatHasOperation_Python

add tests