PetscTimSort[WithArray]() implements Tim Peters hybrid sort algorithm
(https://bugs.python.org/file4451/timsort.txt) which takes advantage of already ordered
consecutive elements in data to sort "rea

PetscTimSort[WithArray]() implements Tim Peters hybrid sort algorithm
(https://bugs.python.org/file4451/timsort.txt) which takes advantage of already ordered
consecutive elements in data to sort "real world data" faster.

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Merged in knepley/feature-snes-check-split (pull request #1553)

Knepley/feature snes check split

Approved-by: BarryFSmith <bsmith@mcs.anl.gov>

Sys: Added simple routine for linear regression

Merge branch 'master' into jpusztay/feature-swarm-symplectic-example

Merged petsc/petsc into master

Merge branch 'master' into knepley/fix-plex-partition-parallel

* master: (414 commits)
very small updates to users manual
syntax is define(XXX) in examples tests not defined(XXX)
Increase patc

Merge branch 'master' into knepley/fix-plex-partition-parallel

* master: (414 commits)
very small updates to users manual
syntax is define(XXX) in examples tests not defined(XXX)
Increase patchlevel to 3.10.3
petsc4py: updat to latest maint snapshot with SNESTEST updates
Fix link for CUDA example in PETSc from GPUs.html page Minor fixes to installation instructions
Mat: Fixed types in Pardiso interface
Converted example comment to latex
This example crashes (for unknown reasons, probably related to the handling of extended derived types passed as arguments) with the PGI Fortran compiler
Remove outdated requires: from top of several examples
remove outdated test requires: command from top of source file
Fix the documentation for -ksp_gmres_cgs_refinement_type
Commit f20c2d659b168217cb455989f28afe052d71a64c broke lex.py so the users manual was no longer being built. There reverted the changes to lex.py
Plex: Add PetscPartitioner to fort list Suggested-by: Jiaoyan Li <Jiaoyan.Li@inl.gov>
Doc: Fix spelling Suggested-by: Manuel Colera Rico <m.colera@upm.es>
Mat ex88: check in double or quad precision only
Fix error with PetscComplex when PETSc is compiled with C and used in C++
configure: fix typo endwith -> endswith
Sys ex23: Migrated to ts_max_time in yaml file as well.
AO ex5: Fixed missing CHKERRQ();
Mat test ex88: add tests for MatMultAdd and MatMultTranposeAdd
...

Conflicts:
src/dm/impls/plex/examples/tests/ex12.c

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

Not sure if this has done the right thing because there are no tests
yet. Also, the fortran stubs break (it doesn't know what to do with
SNESCo

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

Not sure if this has done the right thing because there are no tests
yet. Also, the fortran stubs break (it doesn't know what to do with
SNESCompositeType), and I don't know how to fix it.

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Merged petsc/petsc into master

Merged petsc/petsc into master

Merge branch 'dalcinl/math-isclose' [PR #1252]

Math: Add PetscIsCloseAtTol()

Merge branch 'master' into jpusztay/feature-swarm-symplectic-example

Merge branch 'master' into jpustay/feature-swarm-example

Merged petsc/petsc into master

Merged petsc/petsc into 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 remote-tracking branch 'origin/jczhang/feature-mumps-omp'

Revise PETSc shared memory communicator keyval interface

Names like Petsc_ShmComm_keyval etc are conforming to existing keyvals like Petsc_InnerComm_keyval

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/feature-snes-ex13-spectral

* master: (2350 commits)
migrate warning fix from next-tmp
Revert "Remove dead code."
clarifying comment in the code
Remove dead

Merge branch 'master' into knepley/feature-snes-ex13-spectral

* master: (2350 commits)
migrate warning fix from next-tmp
Revert "Remove dead code."
clarifying comment in the code
Remove dead code.
Add JuMP citation
Copyedits and updates to developers manual
Add more protection to intrinsics
MPI: protect arguments in MPI macros
Add the missing conditionals for 64-bit build
Plex+VTK: Fix field type determination
Fix bug in name cleanup
Bib: Added ref
Plex+VTK: Fix field type determination
Plex: Updated test output - I am now hating this shit
forgot to save file after moving prototypes to petscsys.h
update Apple example project settings per Xcode
Two functions should actually be public, used, for example from Apple MacOS and iOS programs
includes should always be included relative to include directory
Apple removed old locations of docsets
SNES ex12: Updated test output
...

Conflicts:
src/snes/examples/tutorials/ex13.c

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Merge remote-tracking branch 'origin/knepley/fix-snes-ex69' into tisaac/feature-dmfield

* origin/knepley/fix-snes-ex69: (311 commits)
PetscFECreateDefault: fix custom Fortran interface to use MPI_

Merge remote-tracking branch 'origin/knepley/fix-snes-ex69' into tisaac/feature-dmfield

* origin/knepley/fix-snes-ex69: (311 commits)
PetscFECreateDefault: fix custom Fortran interface to use MPI_Comm
SNES ex69: Updated test output
SNES ex69: Removed all mantle stuff and change fields to constants - Also use dsymutil for executables
SNES ex69: Removed special partition
SNES ex69: Fixed null space creation - Null space locks its vectors
PetscFE: PetscFECreateDefault() now takes MPI_Comm instead of DM
cleanup very ugly PCGAMG manual page
minor clarifications for VecScatterCreate() manual page
gcov: PETSC_ARCH is required onlyfor -run_gcov - and not for -merge_gcov [where it doesn't exist]
make clearer in help statements what --with-external-packages-dir is for.
Website: Added news entry for PETSc User Meeting 2018 on main page.
CUDA: Further test output fixes for mat_tests-ex2
Turn off elemental test for parmetis running since this does not work on batch systems.
3.8 Changes: KSPCHEBYSHEV
CUDA: Fixed most test errors due to MatMultTranspose*
website: update urls
website: fix Jason's name to match pic. Also add Todd's pic
Dev manual: copyedit
DMPlexDistributeLabels: Propagate the output flag
cuda/cusp: update minimum supported versions of cuda to 7.5 and cusp to 0.5.0
...

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Merge branch 'barry/fix-bin-install'