Merge branch 'stefano_zampini/feature-pcbddc-saddlepoint'

Conflicts:
src/mat/impls/aij/mpi/mpiaij.c
src/mat/impls/is/matis.c

Modified ex23.c for the API change of the function CheckMat

Merge branch 'hzhang/opt-matgetsubmatrices-rebased-v2'

implement MatGetSubMatrices_MPIAIJ_single() to optimize MatGetSubMatrices_MPIAIJ() when ismax = 1

update src/mat/examples/tests/ex4.c for testing MatGetSubMatrices()

introduce ctable to remove nons

implement MatGetSubMatrices_MPIAIJ_single() to optimize MatGetSubMatrices_MPIAIJ() when ismax = 1

update src/mat/examples/tests/ex4.c for testing MatGetSubMatrices()

introduce ctable to remove nonscalable malloc C->rmap->N array for MatIncreaseOverlap_MPIAIJ_Once()

remove nonscalable d_p by using ctable

add MAT_SUBMAT_SINGLEIS to MatOption. Set this flag in PCSetUp_ASM() to
reduce MPI_AllReduce() in MatGetSubMatrices()

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Merge branch 'stefano_zampini/feature-mathypre'

Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

This is needed to deal with some changes in MatNullSpace from commit 9d2471e

MatHYPRE: create new matrix type

The conversion from AIJ to HYPRE has been taken from src/dm/impls/da/hypre/mhyp.c
HYPRE to AIJ is new

Merge branch 'master' into tisaac/dmplex-feature-real-to-ref

I need updated PetscFE interfaces in what I'm going to do

* master: (603 commits)
parmetis: fix typo in testsuite
Added PETSC_HAVE_A

Merge branch 'master' into tisaac/dmplex-feature-real-to-ref

I need updated PetscFE interfaces in what I'm going to do

* master: (603 commits)
parmetis: fix typo in testsuite
Added PETSC_HAVE_ATTRIBUTEALIGNED flag to makefile
PCSetUp_SVD() used incorrect matrix for matrix size in parallel, also need to skip LAPACK call if matrix size is zero
strumpack: update to latest version 1.0.4
Remove valgrind warning about MPI_Allreduce() with uninitialized data
sed for test output that has atol convergence with quad precision
updated ex1_nest tests
fixed incorrect key value
fix: bad merge a69d34a
test: move runex78 to TESTEXAMPLES_C_NOTSINGLE
build: fix warnings
sys: update test to produce same result - irrespective of debug/opt build - and presence of ~/.petscrc
sys: src/sys/examples/tests/ex30.c -> src/sys/examples/tests/ex32.c to avoid conflict in master
Sed output, since quad precision reduces below atol on these tests
remove automatically generated matrix names from test output files since can be different
Fixes for MatMPIXXXSetPreallocation(), they were not reentrant, since they kept the information used for matrix-vector products
GAMG: fix PCView_GAMG() format - and update output/ex56_0.out
superlu_dist: 64-bit-indices fix https://github.com/xiaoyeli/superlu_dist/issues/4
Add SNESSetDivergenceTolerance / -snes_divergence_tolerance.
fixed unit read in Plex
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Merge branch 'barry/fix-matmpixxxsetpreallocation-reentrant'

Fixes for MatMPIXXXSetPreallocation(), they were not reentrant, since they kept the information used for matrix-vector products

from the previous load as well as the incorrectly sized aij->B matrix.

Fixes for MatMPIXXXSetPreallocation(), they were not reentrant, since they kept the information used for matrix-vector products

from the previous load as well as the incorrectly sized aij->B matrix.
Time: 1.75 hours
Reported-by: Satish Balay <balay@mcs.anl.gov>

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Merge branch 'stefano_zampini/feature-convert-matnest-matis' into stefano_zampini/feature-pcbddc-saddlepoint

I have to merge it here, since there's an API addition for MatIS in stefano_zampini/featu

Merge branch 'stefano_zampini/feature-convert-matnest-matis' into stefano_zampini/feature-pcbddc-saddlepoint

I have to merge it here, since there's an API addition for MatIS in stefano_zampini/feature-pcbddc-saddlepoint
that prevents me to smoothly merge stefano_zampini/feature-convert-matnest-matis into next.

This will also facilitate merging stefano_zampini/feature-pcbddc-saddlepoint into master

Conflicts:
src/docs/website/documentation/changes/dev.html

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Mat: MatSetBlockSizes as a MATOP.

it allows to change the block sizes at a later stage.
For the block formats, the default op raise an error if the user tries to change them

MAT: introduce setlateblocksize function that allows to change the block size after matrix setup

MPIAIJ in manual pages should be MATMPIAIJ in order to produce links

remove dead Adifor code

Time: .1 hours
Reported-by: Sebastien Gilles <sebastien.gilles@inria.fr>

Merge branch 'barry/get-factor-failure-information-from-mat'

Added MatFactorGetErrorZeroPivot()

Time: 2 hours
Reported-by: Glenn E Hammond <gehammo@sandia.gov>

Merge branch 'barry/add-matshell-matgetdiagonalblock-fortran'

Removed the use of PetscObjectQueryFunction() with with MatGetDiagonalBlock()

that I missed when I first converted MatGetDiagonalBlock() from a query function
to a table function

Time: .3 hours
Re

Removed the use of PetscObjectQueryFunction() with with MatGetDiagonalBlock()

that I missed when I first converted MatGetDiagonalBlock() from a query function
to a table function

Time: .3 hours
Reported-by: nightly tests

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Merge branch 'barry/add-matfdcoloring-ghosted-example'

add support for MatShellSetOperation(Mat,MATOP_GET_DIAGONAL_BLOCK, for Fortran

This required changing the handling of MatGetDiagonalBlock() from a query function based
method to a regular method in

add support for MatShellSetOperation(Mat,MATOP_GET_DIAGONAL_BLOCK, for Fortran

This required changing the handling of MatGetDiagonalBlock() from a query function based
method to a regular method in the function table

Time: .75 hours
Reported-by: Steven Dargaville <dargaville.steven@gmail.com>
Thanks-to: Dave May <dave.mayhem23@gmail.com>

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Changed IS_COLORING_GHOSTED to IS_COLORING_LOCAL, added test case, fixed code to work properly

Time: 5 hours
Reported-by: Hong Zhang <hzhang@mcs.anl.gov>

Merge branch 'master' into barry/fix-successful-numerical-factorization-after-failure/master

The maint patch for the given problem cannot merge cleanly into next due to changes
in the same code in m

Merge branch 'master' into barry/fix-successful-numerical-factorization-after-failure/master

The maint patch for the given problem cannot merge cleanly into next due to changes
in the same code in master (the introduction of MatFactorGetError()) therefor need
to merge in master and use the new construct before merging to next

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Merge branch 'master' into psanan/pc-telescope-nearnullspace

MatIS: added conversion routine from MPIAIJ to MATIS

the conversions is very simple, it just compress the columns and merge diagonal and offdiagonal block
reuse case to be done

Merge branch 'master' into mark/snes-ex56

* master: (93 commits)
Web: Added a tutorial
typo
rename X -> U
sowing: update to version that creates manpage URLs for 'enum' types/values
Increa

Merge branch 'master' into mark/snes-ex56

* master: (93 commits)
Web: Added a tutorial
typo
rename X -> U
sowing: update to version that creates manpage URLs for 'enum' types/values
Increase patchlevel to 3.7.3
move runex3_3 to NOTSINGLE [ partial backport 9ed0bd76d5c329eb91401ebabfbd851446214e20 ]
DMPlex: local coordinate vector should be a sequential vector
DM: Name coordinate vectors in subdomain and restrict hooks
tests: disable a couple of TS examples from single precision tests
reduce TS ex12_2 output
fix PetscFormatRealArray() to cast PetscReal in print statement to double so works for __float128 precision
Vec: enable Fortran interfaces for VecGetLocalVectorRead and VecRestoreLocalVectorRead
Bib: Added refs
PCShell: man page fixes
update handling of latex in example code to use https
fix typo in isltog comment
test: Avoid conversion of object <-> function pointer type [-Wpedantic]
fortran: enable interface for VecGetLocalVector(), VecRestoreLocalVector()
update citation for cmz2016
PCBDDC: silent compilation warnings from nightlybuilds
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# especially if it merges an updated upstream into a topic branch.
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