Split dmActive into seperate support for matrix, rhs, and initial guess

Merge branch 'barry/2026-02-22/cleanup-flexible-KSP-docs' into 'main'

Manual page improvements and deprecations for flexible KSP types

See merge request petsc/petsc!9066

MUMPS: remove -with-mumps-serial option and rely on --with-mpi=0

Cleanup of manual pages for flexible KSP methods deprecation of type specific functions

Co-authored-by: Pierre Jolivet <pierre@joliv.et>

HYPRE: add option -hypre_umpire_device_pool_size <size in MiB>

When hypre is configured with Umpire (recommended by hypre), the default Umpire pool size on device is set
to 4 GB per process by hypre

HYPRE: add option -hypre_umpire_device_pool_size <size in MiB>

When hypre is configured with Umpire (recommended by hypre), the default Umpire pool size on device is set
to 4 GB per process by hypre which could lead to out-of-memory when one maps multiple MPI processes to one GPU.

show more ...

fix(dm): CreateFromCellListParallel allocates verticesAdj for the user

Under normal circumstances, the user will not know the number of unique
vertices in the element connectivity

feat(dmlabel): Add DMLabelGetValueISGlobal()

feat(bt): Add PetscBTCountSet()

Deprecate -matmatmult_Bbn in favor of -matproduct_batch_size

See also -ksp_matsolve_batch_size

Merge branch 'jrwrigh/petscsection_distribute_data' into 'main'

feat: Add PetscSectionMigrateData()

See merge request petsc/petsc!8963

feat(section): Add PetscSectionDistributeData()

This is a copy/paste of `DMPlexDistributeData()`, but brought up to the
PetscSection interface because the routine is completely generic

Co-authored-

feat(section): Add PetscSectionDistributeData()

This is a copy/paste of `DMPlexDistributeData()`, but brought up to the
PetscSection interface because the routine is completely generic

Co-authored-by: Barry Smith <bsmith@mcs.anl.gov>

show more ...

Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now t

Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now the standard for passing in contexts
- PetscCtxRt ctx is the standard for passing out contexts, including context destroy routines based on PetscCtxDestroyFn

Both of these are typedef to void*

Also removed most use of user and userctx for context arguments now consistently named ctx

Improved documentation on PetscCtx and PetscCtxRt and on how to use contexts (including getting them) from Fortran

show more ...

Change script name to $PETSC_DIR/lib/petsc/bin/petscfreesharedmemory.sh

from $PETSC_DIR/lib/petsc/bin/petscfreesharedmemory

This is part of the process of better organizing the shell script usage
i

Change script name to $PETSC_DIR/lib/petsc/bin/petscfreesharedmemory.sh

from $PETSC_DIR/lib/petsc/bin/petscfreesharedmemory

This is part of the process of better organizing the shell script usage
in PETSc. Since this functionality is not commonly used it is ok to just change

show more ...

Add petsc4py stubs to changelog

DMPlex: Add DMPlexGetLETKFLocalizationMatrix() to compute localization weight matrix for LETKF

Use Kokkos to create a localization matrix for the LETKF data assimilation method

Tools: Use Gemini Co

DMPlex: Add DMPlexGetLETKFLocalizationMatrix() to compute localization weight matrix for LETKF

Use Kokkos to create a localization matrix for the LETKF data assimilation method

Tools: Use Gemini Code Assist

show more ...

Merge branch 'fix-options-left' into 'main'

Fixes doc and behaviour of an unset -options_left value as reported in #1834.

Closes #1834

See merge request petsc/petsc!8905

Merge branch 'barry/2025-12-24/improve-snes-domain-error-handling' into 'main'

Improve the propagation of function domain error handling in SNES, especially...

See merge request petsc/petsc!8914

MUMPS: support its out-of-core facility

close #1116

Fixes doc and behaviour of an unset -options_left value as reported in #1834.

Now, `-options_left` and `-options_view` are independent.

Improve the propagation of function domain error handling in SNES, especially in the line search routines.

Due to the object layering of SNESLineSearch under SNES there is some code duplication incl

Improve the propagation of function domain error handling in SNES, especially in the line search routines.

Due to the object layering of SNESLineSearch under SNES there is some code duplication include both SNESLineSearchReason and SNESConvergedReason and SNESCheckFunctionNorm() and SNESLineSearchCheckFunctionNorm() and Jacobian friends

Reported-by: david.knezevic@akselos.com

show more ...

Replace -with-mpi-f90module-visibility with -with-mpi-f90module=mpi_f08

Add PETSC_INT_KIND and PETSC_MPIINT_KIND

Reported-by: M.Weiland@epcc.ed.ac.uk

Merge branch 'jczhang/2025-12-10/add-caliper' into 'main'

Add Caliper, a profiling package used by Hypre

See merge request petsc/petsc!8895

Merge branch 'barry/2025-11-30/fix-bad-ts' into 'main'

Fix bad decisions made in writing TS.

See merge request petsc/petsc!8877

Packages: add Caliper, a profiling package used by Hypre

Fix bad decisions made in writing TS.

Fix -ts_dt to -ts_time_step and add initial time step to TSView output

commit a5a92c11fa9681148df375b257eda4e09909b74e
Author: Barry Smith <bsmith@petsc.de

Fix bad decisions made in writing TS.

Fix -ts_dt to -ts_time_step and add initial time step to TSView output

commit a5a92c11fa9681148df375b257eda4e09909b74e
Author: Barry Smith <bsmith@petsc.dev>
Date: Mon Dec 1 14:51:27 2025 -0500

add max_snes_failures to TSView

commit 32d3e79f6fa743930b1bbf32d03b9181b5b5418a
Author: Barry Smith <bsmith@petsc.dev>
Fix wrongly named options and add to TSView

Wrong name for options database key -ts_max_reject should be -ts_max_step_rejections!

Add max_reject value to TSView

Add max_snes_failures to TSView

Add initial timestep to TSView

show more ...