Merge from master

Merge branch 'master' into knepley/feature-dm-nearnullspace

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fixe

Merge branch 'master' into knepley/feature-dm-nearnullspace

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fixed typos in documentation
fixed typos in documentation
Fix some remaining Register()s to call InitializePackage()
Remove memory leaks of XXXRegister() is called but XXX object is never used
Add to PCTFS manual page that it does not work for complex numbers
Stray , in manual page that should be .
Only register MPI3 VecScatter if they are built
clarification of KSPSetComputeInitialGuess()
Add missing makefiles for VecScatter implementations
Changed VecScatterCreate() to take a communicator and return scatter as other first class PETSc objects do. Changed old VecScatterCreate() to VecScatterCreateWithData()
Added VecScatterSetUp() and converted implementations to use it to compute scatter information
Pull "MPI1" and "MPI3" specific code out of common VecScatter impls code This allows future implementations to use the common code also without changing the common code
Seperate VecScatter implementation code into three subdirectories seq, mpi1, and mpi3
doc: fix author list in manual wrt 6402aee
doc: fix LOCDIR wrt broken URL from MatHYPRESetPreallocation.html
ifort: ifx compile error with --with-mpi=0
changes/310.html: merged two TAO sections
...

Conflicts:
src/dm/interface/dm.c

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Merge branch 'master' into knepley/feature-ksp-ex10-transpose

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fi

Merge branch 'master' into knepley/feature-ksp-ex10-transpose

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fixed typos in documentation
fixed typos in documentation
Fix some remaining Register()s to call InitializePackage()
Remove memory leaks of XXXRegister() is called but XXX object is never used
Add to PCTFS manual page that it does not work for complex numbers
Stray , in manual page that should be .
Only register MPI3 VecScatter if they are built
clarification of KSPSetComputeInitialGuess()
Add missing makefiles for VecScatter implementations
Changed VecScatterCreate() to take a communicator and return scatter as other first class PETSc objects do. Changed old VecScatterCreate() to VecScatterCreateWithData()
Added VecScatterSetUp() and converted implementations to use it to compute scatter information
Pull "MPI1" and "MPI3" specific code out of common VecScatter impls code This allows future implementations to use the common code also without changing the common code
Seperate VecScatter implementation code into three subdirectories seq, mpi1, and mpi3
doc: fix author list in manual wrt 6402aee
doc: fix LOCDIR wrt broken URL from MatHYPRESetPreallocation.html
ifort: ifx compile error with --with-mpi=0
changes/310.html: merged two TAO sections
...

Conflicts:
src/ksp/ksp/interface/itfunc.c

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Merged petsc/petsc into master

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (345 commits)
Update dev notes for the coming release
Increase patchlevel to 3.9.4
doc fixes
Added some AIJSELL tests t

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (345 commits)
Update dev notes for the coming release
Increase patchlevel to 3.9.4
doc fixes
Added some AIJSELL tests that mirror the SELL tests.
Bib: More refs
Removed use of hardwired -1 to represent PETSC_NULL_XXX object, since the null value is now 0.
fix memleaks flagged by valgrind
ex62: disable long running test and workaround differences in iteration counts on various builds.
Add FAQ we can point to when users get error messages such as: "PETSc was configured with one OpenMPI mpi.h version but now appears to be compiling using a different OpenMPI mpi.h version"
swith test from mpich to openmpi as mpich ch3:sock is unuserable per PetscShmCommGet()
DM: Forgot to move include statement
fix nightlybuild issues - disable hypre [for openmp] and fix uninitialized variables
tests: enable openmp and hwloc with one of the mumps tests
Default BoomerAMG smoothers
Configure: Revert changes from debb90c, so that we are back to the original Libmesh
Configure: Reverted change for Libmesh from 83cd5d7
Split vecimpl.h into vecimpl.h and vecscatterimpl.h
SNES ex62: Turned off some tests for other precisions and shortened output of sensitive tests
Use mmap to allocate the shared pthread barrier if available
Add configure test for functional mmap
...

Conflicts:
include/petscconvest.h
src/snes/examples/tutorials/ex13.c
src/snes/interface/snes.c
src/snes/utils/convest.c

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Merge branch 'knepley/feature-pc-patch'

Plex: When Plex creates a section automatically, call SetFromOptions
- Could condition this on whether the DM has been set from options

Plex: Improve Draw viewer

Merged petsc/petsc into master

Merge branch 'master' into knepley/fix-superdm-is

* master: (455 commits)
bib: spell out some names for format consistency with related refs
bib: two 2018 pubs now appeared
cleaning up analyze

Merge branch 'master' into knepley/fix-superdm-is

* master: (455 commits)
bib: spell out some names for format consistency with related refs
bib: two 2018 pubs now appeared
cleaning up analyzer warnings
compile fixes (workarround PGI bug?):
undoing the branch's changes to leastsquares outputs
more fixes for complex builds
compile error fix for complex builds
1) Look for 64 bit integer MKL BLAS if 64 bit indices are used with PETSc 2) Fix Pardiso code to only compile pardiso_init64 when needed, otherwise can generate warnings/errors
jenkins: run 'cleantest' before 'allgtest-tap' - an attempt to fix errors of type:
cuda: protect cuda includes
fix cuda warnings.
fix complex compile error
Revert "Improved polymorphism of interfaces for MatSetValuesBlocked()"
Bib: Updated ref
Doc: More function documentation
petscvec: move PetscSFCreateFromZero from vscat to vec sources
Fixed an uninitialized variable and got rid of an unused one.
memleak fixed and output files updated
fixing build errors on some archs
Mat: obey options prefix of Mat in MatNullSpaceTest
...

Conflicts:
include/petsc/private/dmpleximpl.h
src/dm/interface/dmi.c

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Merge branch 'master' into knepley/feature-pc-patch

* master: (281 commits)
compile fixes (workarround PGI bug?):
1) Look for 64 bit integer MKL BLAS if 64 bit indices are used with PETSc 2) Fix

Merge branch 'master' into knepley/feature-pc-patch

* master: (281 commits)
compile fixes (workarround PGI bug?):
1) Look for 64 bit integer MKL BLAS if 64 bit indices are used with PETSc 2) Fix Pardiso code to only compile pardiso_init64 when needed, otherwise can generate warnings/errors
jenkins: run 'cleantest' before 'allgtest-tap' - an attempt to fix errors of type:
cuda: protect cuda includes
fix cuda warnings.
fix complex compile error
Revert "Improved polymorphism of interfaces for MatSetValuesBlocked()"
Bib: Updated ref
Doc: More function documentation
petscvec: move PetscSFCreateFromZero from vscat to vec sources
Mat: obey options prefix of Mat in MatNullSpaceTest
Plex+SNES: Must pass user context through
vscat: move ftn-custom to correct location remove custom vecscatterdestroy_()
vscat: move interface routines to correct location
vscat: delete dead code
fix compile error
FE: Correct coordinates in IntegrateBd
Bib: Added refs
SNES ex17: 3D tests must require a 3D grid generator
Plex+TS: We cannot run the check with the same vector that is the TS solution
...

Conflicts:
include/petsc/private/dmpleximpl.h
src/docs/website/documentation/changes/dev.html
src/snes/examples/tutorials/ex13.c
src/snes/utils/dmplexsnes.c

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Merge branch 'master' into knepley/feature-plex-bdjacobian-single

* master: (68 commits)
compile fixes (workarround PGI bug?):
1) Look for 64 bit integer MKL BLAS if 64 bit indices are used with

Merge branch 'master' into knepley/feature-plex-bdjacobian-single

* master: (68 commits)
compile fixes (workarround PGI bug?):
1) Look for 64 bit integer MKL BLAS if 64 bit indices are used with PETSc 2) Fix Pardiso code to only compile pardiso_init64 when needed, otherwise can generate warnings/errors
jenkins: run 'cleantest' before 'allgtest-tap' - an attempt to fix errors of type:
cuda: protect cuda includes
fix cuda warnings.
fix complex compile error
Revert "Improved polymorphism of interfaces for MatSetValuesBlocked()"
Bib: Updated ref
Doc: More function documentation
petscvec: move PetscSFCreateFromZero from vscat to vec sources
Mat: obey options prefix of Mat in MatNullSpaceTest
Plex+SNES: Must pass user context through
vscat: move ftn-custom to correct location remove custom vecscatterdestroy_()
vscat: move interface routines to correct location
vscat: delete dead code
fix compile error
FE: Correct coordinates in IntegrateBd
Bib: Added refs
SNES ex17: 3D tests must require a 3D grid generator
Plex+TS: We cannot run the check with the same vector that is the TS solution
...

Conflicts:
src/snes/utils/dmplexsnes.c

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Merged petsc/petsc into master

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (249 commits)
Bib: Added refs
Netcdf should always build netcdf-4 (needed for example by exodusii.
trivial fixes of incor

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (249 commits)
Bib: Added refs
Netcdf should always build netcdf-4 (needed for example by exodusii.
trivial fixes of incorrect formatting in SNES linesearch routines
ISSetBlockSize_General: removed blockwise contiguity check.
netcdf: set zlib as optional dependency corretly [wrt --enable-netcdf-4] - otherwise netcdf configure errors out
config prefix: avoid ad-hoc path substitutions
config/install: no need to rename paths for installBinDir
rules: fix path in (evidently unimportant) uncrustify target
config pkgconfig: use ${prefix} in PETSc.pc and do not modify in install
fix gcov obj path
Improved polymorphism of interfaces for MatSetValuesBlocked()
-options_table was changed to options_view in 2014 but documentation was not updated to reflect it
configure: fix F2003 test
Dev manual: remove duplicate entry
Plex test ex5: Removed "future" test, as it resulted in issues in the nightly tests.
Some minor typos in TS
Add ADIOS2.py which I forgot to git add in the past
Plex ex5: Disable test
Doc: Added note for interface change
KSPLSQRMonitorDefault fixed for quad precision
...

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Merge remote-tracking branch 'origin/knepley/fix-plex-submesh-projection'

Merge branch 'master' into knepley/feature-plex-functionals

* master: (984 commits)
netcdf: set zlib as optional dependency corretly [wrt --enable-netcdf-4] - otherwise netcdf configure errors out

Merge branch 'master' into knepley/feature-plex-functionals

* master: (984 commits)
netcdf: set zlib as optional dependency corretly [wrt --enable-netcdf-4] - otherwise netcdf configure errors out
fix gcov obj path
-options_table was changed to options_view in 2014 but documentation was not updated to reflect it
configure: fix F2003 test
Dev manual: remove duplicate entry
Plex test ex5: Removed "future" test, as it resulted in issues in the nightly tests.
Some minor typos in TS
Add ADIOS2.py which I forgot to git add in the past
Plex ex5: Disable test
Doc: Added note for interface change
KSPLSQRMonitorDefault fixed for quad precision
Tao: Added alternative output for chwirut2 test.
TS ex45,ex46: Removed overly refined tests for faster nightly tests.
KSP ex72: Fixed needlessly long-running PCTFS tests.
SNES ex56: Reduced test size to speed up nightly test suite.
KSPSolve_LSQR: don't compute unused norm of rhs
SNES ex13: Reduced problem sizes for nightly tests.
PetscOptionsDeprecated(): fix for NULL prefix
PetscOptionsDeprecated(): add option to print additional info
SNES ex12: Reduced sizes for BDDC tests.
...

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Merge branch 'master' into knepley/feature-plex-elasticity-test

* master: (1553 commits)
-options_table was changed to options_view in 2014 but documentation was not updated to reflect it
config

Merge branch 'master' into knepley/feature-plex-elasticity-test

* master: (1553 commits)
-options_table was changed to options_view in 2014 but documentation was not updated to reflect it
configure: fix F2003 test
Plex test ex5: Removed "future" test, as it resulted in issues in the nightly tests.
Some minor typos in TS
Add ADIOS2.py which I forgot to git add in the past
Plex ex5: Disable test
Doc: Added note for interface change
KSPLSQRMonitorDefault fixed for quad precision
Tao: Added alternative output for chwirut2 test.
TS ex45,ex46: Removed overly refined tests for faster nightly tests.
KSP ex72: Fixed needlessly long-running PCTFS tests.
SNES ex56: Reduced test size to speed up nightly test suite.
KSPSolve_LSQR: don't compute unused norm of rhs
SNES ex13: Reduced problem sizes for nightly tests.
PetscOptionsDeprecated(): fix for NULL prefix
PetscOptionsDeprecated(): add option to print additional info
SNES ex12: Reduced sizes for BDDC tests.
PetscFileRetrieve(): Suppress output to STDERR when downloading a file.
MatMatMult: Fixed unused variable pN.
DMDestroy: Guard call to dm->ops->destroy * Similar guards are in place in many other methods (IS,Vec,Mat) and permit the DM to be destroyed even if DMSetType() was never called.
...

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Merge branch 'master' into knepley/feature-plex-parallel-submesh

* master: (2931 commits)
remove N in docs for SNESQN
replaced test tolerance with PETSC_SQRT_MACHINE_EPSILON
fortran: PetscComp

Merge branch 'master' into knepley/feature-plex-parallel-submesh

* master: (2931 commits)
remove N in docs for SNESQN
replaced test tolerance with PETSC_SQRT_MACHINE_EPSILON
fortran: PetscComplex type is missing from fortran
initialize variables so that static analyzer doesn't mistakenly think they are used uninitialized.
Move access of prefix until it is actually used
Remove DMDASplitComm2d(), used in one example that was not tested
Functions that do not return PetscErrorCode should not use PetscFunctionBegin/End paradgm
remove unneeded reassignment of same value
Missing CHKERRQ(); Mostly in Tao code
Remove clang static analyser warning about passing NULL variable to strncat()
missing newline in -ts_monitor_extreme
minor fixes for integer counters
Configure: Deal with '__func__' in C89 builds with newer Clang and GCC.
Jenkinsfile: Increased timeout for tests to 5 minutes.
3.9 changes: further clarify removal of -pc_factor_mat_solver_package
Options deprecations: add "PETSc" to inline warning
removing unused variable
MatShift support added to MATSUBMAT. Mimics MATSHELL functionality. Needed for matrix-free Hessians in TAO Newton-Line-Search methods.
Add -ts_monitor_extreme
Dev manual: add note on deprecating options database keys
...

Conflicts:
src/dm/impls/plex/examples/tests/ex4.c

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Merge branch 'master' into knepley/fix-plex-submesh-projection

* master: (425 commits)
remove N in docs for SNESQN
replaced test tolerance with PETSC_SQRT_MACHINE_EPSILON
fortran: PetscComplex

Merge branch 'master' into knepley/fix-plex-submesh-projection

* master: (425 commits)
remove N in docs for SNESQN
replaced test tolerance with PETSC_SQRT_MACHINE_EPSILON
fortran: PetscComplex type is missing from fortran
initialize variables so that static analyzer doesn't mistakenly think they are used uninitialized.
Move access of prefix until it is actually used
Remove DMDASplitComm2d(), used in one example that was not tested
Functions that do not return PetscErrorCode should not use PetscFunctionBegin/End paradgm
remove unneeded reassignment of same value
Missing CHKERRQ(); Mostly in Tao code
Remove clang static analyser warning about passing NULL variable to strncat()
missing newline in -ts_monitor_extreme
minor fixes for integer counters
Configure: Deal with '__func__' in C89 builds with newer Clang and GCC.
Jenkinsfile: Increased timeout for tests to 5 minutes.
3.9 changes: further clarify removal of -pc_factor_mat_solver_package
Options deprecations: add "PETSc" to inline warning
removing unused variable
MatShift support added to MATSUBMAT. Mimics MATSHELL functionality. Needed for matrix-free Hessians in TAO Newton-Line-Search methods.
Add -ts_monitor_extreme
Dev manual: add note on deprecating options database keys
...

Conflicts:
src/dm/impls/plex/examples/tests/ex4.c

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Merge branch 'jczhang/fix-pr1022-optimize-vecscatter-with-memcpy_2' into jczhang/fix-pr1022-optimize-vecscatter-with-memcpy

Merged petsc/petsc into master

Merge branch 'barry/clarify-dmplex-documentation' [PR #917]

* barry/clarify-dmplex-documentation:
Rename DM[GS]etDefault{Global}Section() to DM[GS]et{Global}Section().
Add DMPlexComputeGeometryFEM()

Merge branch 'psanan/vtk-viewer-dmda-dof' [PR #1029]

* psanan/vtk-viewer-dmda-dof:
DMDA VTK viewing: output multiple-dof fields

This continues a discussion on petsc-dev: https://lists.mcs.anl.gov/p

Merge branch 'psanan/vtk-viewer-dmda-dof' [PR #1029]

* psanan/vtk-viewer-dmda-dof:
DMDA VTK viewing: output multiple-dof fields

This continues a discussion on petsc-dev: https://lists.mcs.anl.gov/pipermail/petsc-dev/2018-June/023142.html
The aim is to allow one to view both scalar and vector fields in the same .vtr or .vts file, by viewing vectors associated with two compatible (but not identical because of differing dof/node) DMDAs.
This allows one to create an easy-to-load-into-Paraview file with the solution to the Stokes system, where the velocity is loaded as vector data (not a collection of scalar fields as before, where you’d have to use the Calculator to do things like plot streamlines).
This is accomplished here by:
- Adding a new argument to PetscViewerVTKAddField() to allow skipping the existing check that all vectors come from the same DM
- Adding a new function PetscViewerVTKGetDM()
- When viewing a vector associated with a DMDA, using the two changes above to skip the check and perform a check with DMGetCompatibility()
- Changing the behavior of DMDA viewing, when dof > 1, to write a single multi-dof field instead of multiple scalar fields (thanks to @Boris Kaus for the original code for this)

Some additional tests are added, based on DM test ex42.

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Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (353 commits)
Configure: Pragmatic now requires Cxx11
fix compile warning
mpiuni: build somempifort.o after mpiuni.mod

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (353 commits)
Configure: Pragmatic now requires Cxx11
fix compile warning
mpiuni: build somempifort.o after mpiuni.mod
Remove use of common block from MPIUNI code
use was in wrong location
Fortran line extends past 72 char
Moved the rest of the PETSc common block variables over to petscsys module
tests: fix breakage due to cd93b0e13c6da70ee1e038f55989cf888bc1d1c5
Need to use petscsys to get PETSC_COMM_SELF defined in example
Mat ex23 and ex40: fix errors reported from nightly tests
Put declaration on too lines because otherwise it generates an error for truncated line
Move PETSC_COMM_WORLD and PETSC_COMM_SELF from common blocks to petscsys module
tests: fix requires - and create out files for seqaijmkl tests
KSP ex72: nested dissection is likely to be different between machines
cmake: downgrade to version 3.9 - as newer versions require cxx11 compiler [which is not universal]. However stick with version 3.11 on opensolaris
Mat ex23: fix memory leaks
Bib: Some new refs
KSP examples: add missing casts to double in printf
updated GAMG KSP tests
PetscRound() should be PetscRoundReal() in __fp16
...

Conflicts:
include/petsclog.h
src/sys/logging/plog.c
src/sys/logging/utils/eventlog.c

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VTK Viewer: add flag to skip DM check PetscViewerVTKAddField(), compatibility check for DMDA, PetscViewerVTKGetDM()

In the DMDA case, this allows for compatible, yet different, DMDAs to be attached

VTK Viewer: add flag to skip DM check PetscViewerVTKAddField(), compatibility check for DMDA, PetscViewerVTKGetDM()

In the DMDA case, this allows for compatible, yet different, DMDAs to be attached to the provided Vecs.

This is done as the fields are added, by using a new
PetscViewerVTKGetDM() function to check for compatibility,
with the help of DMGetCompatibility(). The new flag for
PetscViewerVTKAddField() is used to skip the existing, more stringent
requirement that all fields must come from vectors generated from the
same DM.

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