Merged petsc/petsc into master

Merge remote-tracking branch 'origin/stefano_zampini/weakly-symmetric-elasticity-rebased'

Do some housekeeping and add missing CHKERRQ calls

Merge from master

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 '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 'hongzh/symplectic-integrator' [PR #1049]

* hongzh/symplectic-integrator:
This branch implements symplectic time integrators.

We should come up with a unifying framework that works for

Merge branch 'hongzh/symplectic-integrator' [PR #1049]

* hongzh/symplectic-integrator:
This branch implements symplectic time integrators.

We should come up with a unifying framework that works for all multi- methods such as multirate methods (see PR #1043). The idea of this branch is to ask users to provide a two-way splitting of the separable Hamiltonian system.

TSGetRHSFunctionSplit2w(TS ts,Vec *r,TSRHSFunctionSplit2w *fun1,TSRHSFunctionSplit2w *fun2,void **ctx)
TSSetRHSFunctionSplit2w(TS ts,Vec r,TSRHSFunctionSplit2w fun1,TSRHSFunctionSplit2w fun2,void *ctx)

The split/partitioned functions typically have an output vector that has lower DOF. For example, RHSFunction() represents a mapping Rn → Rn , but RHSFunctionSplit2w() provides a mapping Rn → Rn/2 since the subvector is always half of the combined vector. This is also why I use nested vectors for simplicity.

Using IS is a more general way to support multi-way splitting. I am not sure if we should use IS instead of nested vectors for symplectic integrators. Perhaps we can keep both approaches.

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Use linked list for TSRHSSplit

Funded-by:
Project: PETSc time integration
Time: 4.0 hours
Reported-by:
Thanks-to:

Allow RHSSplit to return sub TS

Funded-by:
Project: PETSc time integration
Time: 6.0 hours
Reported-by:
Thanks-to: