Merge remote-tracking branch 'origin/maint'

Merge remote-tracking branch 'origin/jolivet/fix-symlink-free' into maint

Single petscdir.mk

Merge remote-tracking branch 'origin/more-updates-for-missing-petsc_dir'

More support for not needing to set PETSC_DIR yet build with PETSc, also...

See merge request petsc/petsc!2626

build: add more support for not needing to set PETSC_DIR yet build with PETSc, also support for GNU make to directly use "make test" instead of "make -f gmakefile.test"

Still needs -include ../petsc

build: add more support for not needing to set PETSC_DIR yet build with PETSc, also support for GNU make to directly use "make test" instead of "make -f gmakefile.test"

Still needs -include ../petscdir.mk in many of the makefiles
Still needs the link for ../petscdir.mk in many directories

GNUMakefile: call legacy makefile recursively instead of including it

GNUMakefile: promote default "all" target; "libs" builds libpetsc*

GNUMakefile: If gnumake < 4.2 prefer makefile wrapper interface over direct gmakefile interface to avoid the following warnings

gmakefile.test:92: arch-ci-linux-cxx-cmplx-pkgs-64idx/tests/testfiles: No such file or directory
gmakefile:67: arch-ci-linux-cxx-cmplx-pkgs-64idx/lib/petsc/conf/files: No such file or directory

Commit-type: testing-fix, feature, usability
Thanks-to: Jed Brown jed@jedbrown.org

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Merge branch 'master' into 'master'

Add --download-hpddm

See merge request petsc/petsc!1994

--download-hpddm for PCHPDDM and KSPHPDDM

Merge branch 'pr1819/jkruzik/feature-pcdeflation/master' [PR #1819]

* pr1819/jkruzik/feature-pcdeflation/master:
PCDeflation.
Implements multilevel deflation preconditioner that can shift part of th

Merge branch 'pr1819/jkruzik/feature-pcdeflation/master' [PR #1819]

* pr1819/jkruzik/feature-pcdeflation/master:
PCDeflation.
Implements multilevel deflation preconditioner that can shift part of the spectrum to a predefined value.

Given a full rank deflation matrix W, the deflation preconditioner uses projections Q = W*(W'*A*W)^{-1}*W' and P = I - Q*A.
It computes computes initial guess x0 = x_{-1} - Q*r_{-1} which is the solution on the deflation space.
The preconditioner application consists of P*M^{-1} + factor*Q, where M^{-1} is an additional preconditioner.

See the documentation for PCDEFLATION above PCCreate_Deflation for more detailed description.

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add SetUP

Merged in Fande-Kong/feature_hmg (pull request #1682)

Hybrid of PETSc preconditioners (such as ASM, BJacobi, SOR, etc.) and Hypre BoomerAMG

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

Implemented an AMG that uses Hypre to coarsen matrix

and generate a sequence of coarse matrices. These coarse
matrices are used to setup a PETSc PCMG.

There are two benefits:

(1) We can use any PE

Implemented an AMG that uses Hypre to coarsen matrix

and generate a sequence of coarse matrices. These coarse
matrices are used to setup a PETSc PCMG.

There are two benefits:

(1) We can use any PETSc preconditioners such as ASM, BJacobi as
level smoothers (solvers). For some applicaitons, the combination
of ASM and AMG works great while only AMG or AMS does not work at all.

(2) For multicomponent problems, we could just coarsen one submatrix
associated with one particular component. In this way, the setup of the
preconditioner is significantly improved. One typical use case is
neutron transport equations. There are many variables on each mesh
vertex due to the discretization of angle and energy. Each variable,
in fact, corresponds to the same PDEs but with different material
properties.

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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 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'

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

* master: (123 commits)
Fix a few more Fortran objects to have their NULL value match the C NULL value
remove dead code
Add variable point blo

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

* master: (123 commits)
Fix a few more Fortran objects to have their NULL value match the C NULL value
remove dead code
Add variable point block Jacobi for MPIAIJ matrix.
should not pass user contexts through CHKFORTRANNULLOBJECT in Fortran stubs
fix mpiuni test
Remove CHKFORTRANNULLOBJECTDEREFERENCE since it is no longer needed with Fortran null equal to C null
PETSCFEOPENCL: declare PetscFEGetTabulation_Basic as external
PETSCFEOPENCL: declare PetscFESetUp_Basic as external
Change Fortran null pointer to match C null pointer
one more fix
jenkins: run 'cleantest' after examples are run - to recover diskspace
logical order bug in diagbrdn update fixed, tests updated again
replace new -petscspace_order instances with -petscspace_degree
PETSCSPACETENSOR: clear up naming confusion of subspaces
regression.py: remove configure code related to old test suite - now that SLEPc no longer needs it
PetscSpaceSetup_Poly(): make idempotent
Plex ex3: update tests
Lift changes to defunct dtfe.c from [PR #1074]
PetscSpace_Tensor: clarification of vector-valued
PetscSpace_Tensor: allow height subspaces, fixes tabulation initialization
...

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

* master: (131 commits)
fix mpiuni test
PETSCFEOPENCL: declare PetscFEGetTabulation_Basic as external
PETSCFEOPENCL: declare PetscFESetUp_Ba

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

* master: (131 commits)
fix mpiuni test
PETSCFEOPENCL: declare PetscFEGetTabulation_Basic as external
PETSCFEOPENCL: declare PetscFESetUp_Basic as external
one more fix
jenkins: run 'cleantest' after examples are run - to recover diskspace
logical order bug in diagbrdn update fixed, tests updated again
replace new -petscspace_order instances with -petscspace_degree
PETSCSPACETENSOR: clear up naming confusion of subspaces
regression.py: remove configure code related to old test suite - now that SLEPc no longer needs it
PetscSpaceSetup_Poly(): make idempotent
Plex ex3: update tests
Lift changes to defunct dtfe.c from [PR #1074]
PetscSpace_Tensor: clarification of vector-valued
PetscSpace_Tensor: allow height subspaces, fixes tabulation initialization
PetscSpace: add a dimension member
PetscSpaceSetDegree(): now take maxDegree argument
-petscspacepoly_tensor -> -petscspace_type tensor
PetscSpaceEvaluate_Polynomial(): fix temp array dependencies
PETSCSPACETENSOR: A generic tensor product of spaces.
PetscSpace: -petscspace_order -> -petscspace_degree
...

Conflicts:
src/dm/dt/interface/dtfe.c
src/snes/examples/tutorials/ex13.c
src/snes/examples/tutorials/ex17.c
src/snes/examples/tutorials/ex62.c
src/snes/examples/tutorials/output/ex62_bddc_quad.out
src/snes/examples/tutorials/output/ex62_fetidp_2d_quad.out
src/snes/examples/tutorials/output/ex62_fetidp_2d_tri.out
src/snes/examples/tutorials/output/ex62_fetidp_3d_hex.out
src/snes/examples/tutorials/output/ex62_fetidp_3d_tet.out

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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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