Viwering PetscSection displays dof as dim in the ASCII files, fix to dof

plexcreate: add localizationHeight and sparseLocalize args to DMPlexCreateBoxMesh()

PCGAMG: some brain dead optimizations

add extra information for PCView
minimize messages for simple repartitioning
minimize matrix permutations with simple redistribution
expose API to set graph sym

PCGAMG: some brain dead optimizations

add extra information for PCView
minimize messages for simple repartitioning
minimize matrix permutations with simple redistribution
expose API to set graph symmetrization (this can be useful in nested solvers when the GAMG block is symmetric but the monolithic matrix is not)
update examples output

show more ...

fix bugs in examples [exposed by "PCFIELDSPLIT: implement PCSetUpOnBlocks" change]

DMPLEXVTU: fix for empty processes

add test

Merge branch 'stefanozampini/tr-api' into 'main'

API for SNESNewtonTR tolerances and parameters

See merge request petsc/petsc!7689

SNESNEWTONTR: use cauchy point with objective function minimization only

stol default for TR should be 0

SNES: trust region API

deprecate old SNESSetTrustRegionTolerance

fix(plexcgns): Tolerate ranks with no elements

Merge branch 'jrwrigh/dm_box_label' into 'main'

Plex: Add box labeling to simplex, input meshes

See merge request petsc/petsc!7741

plex: Print out labels in sorted stratum order

feat(plex): Add DMPlexSetBoxLabel_Internal

SNES: Add SNESNEWTONAL for Newton's method with arc length continuation

Merge branch 'knepley/feature-adaptor-multiple-loops' into 'main'

Add adaptor with multiple loops

See merge request petsc/petsc!7698

MatSchurComplementComputeExplicitOperator: return a MATDENSE by default

Merge branch 'jose/deprecate-petsc-default' into 'main'

Fix usage of deprecated PETSC_DEFAULT

See merge request petsc/petsc!7707

Fix usage of deprecated PETSC_DEFAULT

Fix warnings in src/snes/tutorials/ex5f.F90

of the form

305 | hx = one/((mx-1))
| 1
Warning: Possible change of value in conversion from INTEGER(8) to

Fix warnings in src/snes/tutorials/ex5f.F90

of the form

305 | hx = one/((mx-1))
| 1
Warning: Possible change of value in conversion from INTEGER(8) to REAL(4) at (1) [-Wconversion]

show more ...

Update SNESSetTolerances() to accept PETSC_DETERMINE an PETSC_DECIDE

SNES ex27: Added multiple loop test

SNES ex12: Updated tests

SNES ex27: Poisson problem using primal and mixed form for error estimator using flux norm

The use case of PetscOptionsGetViewer() has evolved to no longer be the get/restore model

Hence the code needs to be refactored

Introduce PetscCallNull() and PetscCallMPINull() to simplify PETSC_VI

The use case of PetscOptionsGetViewer() has evolved to no longer be the get/restore model

Hence the code needs to be refactored

Introduce PetscCallNull() and PetscCallMPINull() to simplify PETSC_VIEWER_XXXX_() routines

Reported-by: James Wright
Thanks-to: Jeremy L Thompson

show more ...

-ksp_converged_reason can result in a unused option report if KSPSolve ends up not being called.

Thus bug fix moves the options database check to KSPSetFromOptions.

Also done for SNES

Reported-by:

-ksp_converged_reason can result in a unused option report if KSPSolve ends up not being called.

Thus bug fix moves the options database check to KSPSetFromOptions.

Also done for SNES

Reported-by: Alex Lindsay:

show more ...

This requires some changes to user FORTRAN code

Pass PETSC_NULL_XXX_ARRAY when passing a NULL as an argument that is expecting an array
Pass PETSC_NULL_ENUM when argument returns an enum instead of

This requires some changes to user FORTRAN code

Pass PETSC_NULL_XXX_ARRAY when passing a NULL as an argument that is expecting an array
Pass PETSC_NULL_ENUM when argument returns an enum instead of PETSC_NULL_INTEGER
Pass arrays (and not scalar values) when the argument is expecting an array; this means replace, for example, the argument v with [v]
Use PetscObjectIsNull(obj) to check if the object is NULL, instead of obj == PETSC_NULL_XXX

The compiler will now automatically prevent you from using the wrong argument type for the first three bullets above
This will also require an update sowing with the new sowing branch this MR is using.

show more ...