Merge remote-tracking branch 'origin/release'

Merge branch 'mr/1863-mpiaij-coo' into 'release'

Consolidated bugfixes for issues #1860, #1863, #1864, #1865, #1866, #1867, #1868

See merge request petsc/petsc!9059

Fix MPI_Comm_rank/size API mixups in helpers (#1865,#1866)

Merge branch 'jolivet/safeguard-pchpddm-schur-ci' into 'main'

Housekeeping + more safeguards in PCHPDDM

See merge request petsc/petsc!8859

Housekeeping

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

- 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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Merge branch 'barry/2025-09-04/deprecate-mpiu-bool' into 'main'

Deprecate MPIU_BOOL which used to be for PETSc's enum Bool but now is just MPI_C_BOOL

See merge request petsc/petsc!8691

Merge branch 'stefanozampini/submat-zerorows' into 'main'

implement ZeroRowsLocal and ZeroRowsColumnsLocal for local references

See merge request petsc/petsc!8705

Deprecate MPIU_BOOL which used to be for PETSc' enum Bool but now is just MPI_C_BOOL so no longer needs its own name

Mat: add ops for zerorowscolumnslocal

Merge branch 'MarDiehl/use-bool-instead-of-enum' into 'main'

use bool instead of enum

See merge request petsc/petsc!8528

distinguish Boolean and Integer

MPI_Comm_get_attr has PetscMPIInt as flag argument, not PetscBool. Name
this flag "iflg" (was used somewhere already).
Use MPI_LAND instead of MPI_BAND for logical op

distinguish Boolean and Integer

MPI_Comm_get_attr has PetscMPIInt as flag argument, not PetscBool. Name
this flag "iflg" (was used somewhere already).
Use MPI_LAND instead of MPI_BAND for logical operations instead of
MPI_MIN, MPI_MAX, and MPI_LAND.

Note: Most of the previous code was probably working as intended, I did
the changes when debugging error related to the use of standard C Bool and
kept them because it took me a while to understand that MPI has integer
flags and PETSc has Booleans. Using different names makes this clear,
but was and is not done consistently.

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Merge branch 'MarDiehl/fix-typo' into 'main'

missing "s" for isascii and issundials

See merge request petsc/petsc!8559

missing "s" for isascii and issundials

Merge branch 'lindad/hypre-control-through-pmat' into 'main'

Change hypre PC option defaults based on hypre matrix memory location

See merge request petsc/petsc!8505

Make MatGetCurrentMemType first class API

Merge branch 'jolivet/cleanup' into 'main'

Housekeeping

See merge request petsc/petsc!8392

MatOps cleanup

Merge remote-tracking branch 'origin/release'

Merge branch 'jose/ftn-penss' into 'release'

Fortran bindings: add PeNSS for mixed automatic-custom interfaces

See merge request petsc/petsc!8312

Fix Fortran interface of two functions

Merge branch 'stefanozampini/matoption-no-error' into 'main'

MatSetOption: ignore unused options instead of erroring out

See merge request petsc/petsc!8179

MatSetOption: ignore unused options instead of erroring out

Merge branch 'jolivet/rm-useless-code' into 'main'

Remove useless code

See merge request petsc/petsc!8115