Remove all double blank lines from source

Commit-type: petsc-style
/2h

Merge branch 'jose/typos' into 'master'

Fix several typos in error strings

See merge request petsc/petsc!3141

Fix several typos in error strings

Merge branch 'barry/2020-08-16/fix-source-formatting' into 'master'

Turn on checkbadSource test to generate an error when found; fix all source code that causes errors

See merge request petsc/petsc

Merge branch 'barry/2020-08-16/fix-source-formatting' into 'master'

Turn on checkbadSource test to generate an error when found; fix all source code that causes errors

See merge request petsc/petsc!3064

show more ...

Turn on checkbadSource test to generate an error when found; fix all source code that causes errors

Commit-type: portability-fix, testing-fix, style-fix, feature, maintainability
/spend 1.5h

Merge branch 'dalcinl/fix-null' into 'master'

KSP/PC: Fix 0 ->NULL for pointers

See merge request petsc/petsc!2794

KSP/PC: Fix 0 ->NULL for pointers

Merge branch 'master' into 'barry/2019-08-22/fix-fblaslapack-for-nag'

# Conflicts:
# lib/petsc/conf/test

Merge branch 'Fande-Kong/feature_set_PtAP_pchmg' into 'master'

A few improvements to PCHMG

See merge request petsc/petsc!1985

Have to handle 64 bit integers in print statements

Addressed Barry's comments

HMG: added a test for ``-pc_hmg_coarsening_component"

HMG: added a parameter to choose which component will be used for the subspace-based coarsening algorithm

Merge branch 'Fande-Kong/feature-maij-hmg' [PR #1933]

* Fande-Kong/feature-maij-hmg:
Using MatMAIJ to store interpolations in PCHMG
(1) Rewrote MatGetBrowsOfAcols_MPIXAIJ to extract the remote part

Merge branch 'Fande-Kong/feature-maij-hmg' [PR #1933]

* Fande-Kong/feature-maij-hmg:
Using MatMAIJ to store interpolations in PCHMG
(1) Rewrote MatGetBrowsOfAcols_MPIXAIJ to extract the remote part of interpolations
(2) Refactored MatPtAP__allatonce and MatPtAPXXX__allatonce_merged to take care of MatMAIJ
(3) Added MatMAIJ support to PCHMG

show more ...

Display the right PC type name

HMG is able to use MATMAIJ for interpolations for multicomponent problems

Merged in barry/optimize-aij-da (pull request #1762)

Non-numeric optimizations focused on AIJ, MatFDColoring, and DMCreateMatrix_DA_*AIJ, looking to improve performance in GPU environments

Non-numeric optimizations focused on AIJ, MatFDColoring, and DMCreateMatrix_DA_*AIJ, looking to improve performance in GPU environments

1) PetscCalloc*() now uses system calloc()
2) Merged some Pets

Non-numeric optimizations focused on AIJ, MatFDColoring, and DMCreateMatrix_DA_*AIJ, looking to improve performance in GPU environments

1) PetscCalloc*() now uses system calloc()
2) Merged some PetscMalloc*()
3) Eliminated unneeded PetscCalloc*()
4) Removed some memory allocations and copies in MatFDColoringSetUp(), added local variables for better compiler optimization
5) Added MatSetValues_SeqAIJ_SortedFull(), added MatSetOption(MAT_SORTED_FULL)
6) Optimized DMCreateMatrix_DA_*AIJ for nonperiodic case to automatically have sorted columns (faster MatSetValues() times)
7) Eliminated call to PetscMemzero() in PetscFree()

Commit-type: style-fix, feature

show more ...

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>

HMG: we can reuse interpolations even when the matrix pattern is different

HMG: Added tests for reuse interpolation and interface functions

Also addressed comments from Barry

Improve interfaces and make HMG more general

Now HMG can take any PC as an inner PC as long as the PC
provides PCGetInterpolations and PCGetCoarseOperators

If hypre is available, it will be used b

Improve interfaces and make HMG more general

Now HMG can take any PC as an inner PC as long as the PC
provides PCGetInterpolations and PCGetCoarseOperators

If hypre is available, it will be used by default, otherwise use GAMG.
Users can override the setting using -hmg_inner_pc_type

show more ...

Move declarations to header since fortran rountine needs these

Update interfance and support GAMG

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.

show more ...