Merge branch 'knepley/fix-snes-monitor-lg' into 'release'

Knepley/fix snes monitor lg

See merge request petsc/petsc!4615

SNES: Somehow the LG monitor was broken in SNES

Merge branch 'stefanozampini/unify-getctx' into 'main'

Unify XXGetYYContext calls

See merge request petsc/petsc!4212

Unify XXGetYYContext calls

always use void*

Merge branch 'barry/2021-05-06/add-snes-picard-mf' into 'main'

Add support for using -snes_mf_operator with SNESSetPicard()

See merge request petsc/petsc!3962

Merge branch 'barry/2021-05-16/fix-double-lines' into 'main'

Fix typos in source

See merge request petsc/petsc!3984

Remove all double blank lines from source

Commit-type: petsc-style
/2h

Merge branch 'knepley/feature-dm-aux-data-keys' into 'main'

Plex: Updates to declarative interface for FEM problems

See merge request petsc/petsc!3972

SNES+DM: Move Jacobian action to plexfem.c
- Create a MatShell for Jacobian action

Add support for using -snes_mf_operator with SNESSetPicard()

Applies Newton's method using matrix-free application of the true Jacobian, preconditioned by user provided Picard matrix

This involved

Add support for using -snes_mf_operator with SNESSetPicard()

Applies Newton's method using matrix-free application of the true Jacobian, preconditioned by user provided Picard matrix

This involved adding (*computemffunction)(SNES,Vec,Vec,void*); to be used by the MatCreateSNESMF() operator when it is set and routines to work with the new function.

The implementation requires maintaining a copy of the matrix that is filled by the users routine that computes the matrix at each matrix-vector product. The original matrix is used for constructing the preconditioner and therefor cannot be overwritten.

Also dropped the requirement that the user provide a right hand side function to SNESSetPicard()

Commit-type: feature, example
/spend 8h
Thanks-to: Saransh Saxena <saransh.saxena5571@gmail.com>

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Merge branch 'tisaac/feature-dm-interpolate-solution' into 'main'

Total solution interpolation

See merge request petsc/petsc!3700

Add SNESFASFullSetTotal()

squashme: missed rename

Merge branch 'Fande-Kong/plugable_reason_view' into 'master'

plugable KSP/SNES reason view system - SNESConvergedReasonView KSPConvergedReasonView

See merge request petsc/petsc!3595

plugable KSP/SNES reason view system - SNESConvergedReasonView KSPConvergedReasonView

Merge branch 'knepley/feature-monitors-reorg' into 'master'

Knepley/feature monitors reorg

See merge request petsc/petsc!3631

KSP: Reorganized monitors - Now the residual can be viewed using -ksp_monitor draw and a plot can be made using -ksp_monitor draw::draw_lg - This also works for the true residual and error - We no

KSP: Reorganized monitors - Now the residual can be viewed using -ksp_monitor draw and a plot can be made using -ksp_monitor draw::draw_lg - This also works for the true residual and error - We noe register monitors so that dispatch based on viewer and format works - Add KSPMonitorLGCreate(), and remove KSPMonitorLGResidualNorm*() and KSPMonitorLGTrueResidualNorm*() - Add KSPMonitorError(), used by -ksp_monitor_error - Add arguments to KSPMonitorSetFromOptions() to allow line graphs to be configured - Remove SNESMonitorLGCreate() and SNESMonitorLGResidualNorm() which are now handled by the default monitor - PetscViewerAndFormat now allows a payload - VecView_Plex() and VecView_Plex_Local() must propagate the flag indicating zero BC

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Merge remote-tracking branch 'origin/release' into master

Merge branch 'jed/header-symbol-consistency' into 'release'

Remove interface declarations for functions that don't exist

See merge request petsc/petsc!3374

Remove interface declarations for functions that don't exist

MATDAAD: remove vestigial references to deleted DAAD

Merge branch 'nathawani/feature-snes-lowmach-example' into 'master'

Nathawani/feature snes lowmach example

See merge request petsc/petsc!3319

DM: Fix nullspace handling
- Now, nullspace constructors construct a nullspace for the entire DM,
but based on the singularity of an operator connected with the given
field
- remove special handling

DM: Fix nullspace handling
- Now, nullspace constructors construct a nullspace for the entire DM,
but based on the singularity of an operator connected with the given
field
- remove special handling in SNESSetUpMatrices()
- Now all nullspaces are created in DMCreateMatrix()
- Fixed bug in DMSNESCheckJacobian()

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Merge branch 'barry/2020-08-26/fix-snesreasonview' into 'master'

Fix the name of SNESReasonView() and SNESReasonViewFromOptions()

See merge request petsc/petsc!3102

Fix the name of SNESReasonView() and SNESReasonViewFromOptions() to PETSc standards

Remove the format argument from KSPConvergedReasonView() since it is not needed and inconsistent with the SNES ver

Fix the name of SNESReasonView() and SNESReasonViewFromOptions() to PETSc standards

Remove the format argument from KSPConvergedReasonView() since it is not needed and inconsistent with the SNES version,
plus the previous release did not have this argument.

Commit-type: style-fix
/spend 5m
Reported-by: Jose E. Roman

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Merge branch 'knepley/feature-plex-adaptive-interpolation' into 'master'

Knepley/feature plex adaptive interpolation

See merge request petsc/petsc!3018