Merge remote-tracking branch 'origin/release' into master

Merge branch 'stefanozampini/fix-matduplicate' into 'release'

MatDuplicate_SeqAIJ_Inode: fix for null pointer

See merge request petsc/petsc!3338

MatDuplicate_SeqAIJ_Inode: fix for null pointer

Reported by: Jose E. Roman <jroman@dsic.upv.es>

Merge remote-tracking branch 'origin/release' into master

Merge branch 'stefanozampini/fix-gamg-transposegencuda' into 'release'

Fix CUDA performance regression and KOKKOS bugfixes

See merge request petsc/petsc!3310

MatSeqAIJINode: do not change pointers for Mult,MultAdd and SOR

MatInode: set it to false when using device matrices

MATAIJKOKKOS: bugfixes

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

Fix 0 -> NULL for pointers

See merge request petsc/petsc!3086

Mat: Replace 0 -> NULL for pointers

Merge remote-tracking branch 'origin/maint'

Merge branch 'barry/2020-07-19/bugs-flopcount-view/maint' into 'maint'

Limit chance of integer overflow in calls to PetscLogFlops()

See merge request petsc/petsc!2986

Limit chance of integer overflow in calls to PetscLogFlops()

Don't view inner KSP when it has not yet been created.

Commit-type: bug-fix
Funded-by: ECP
/spend 20m
Reported-by: Karl Yang <y.juntao@

Limit chance of integer overflow in calls to PetscLogFlops()

Don't view inner KSP when it has not yet been created.

Commit-type: bug-fix
Funded-by: ECP
/spend 20m
Reported-by: Karl Yang <y.juntao@hotmail.com>

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Merge branch 'maint'

Merge branch 'jolivet/fix-double-semicolons' into 'maint'

Double semicolons

See merge request petsc/petsc!2150

Double semicolons

Merge branch 'karlrupp/fix-disable-inodes-for-gpus' [PR #1958]

* karlrupp/fix-disable-inodes-for-gpus:
GPUs: Disabling inode routines for AIJ-based types

MatSeqAIJCheckInode(): Fixed memory leak introduced in previous commit.

GPU: Turning off inode routines.

GPUs currently do not support inode routines, so disabling them.
Based on commit fa81f61

Thanks-to: Mark Adams <ma2325@columbia.edu>

Merged in barry/cuda-multigrid-test (pull request #1763)

Various improvements for GPUs (mostly for performance and CUDA)

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

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Various improvements for GPUs (mostly for performance and CUDA)

1) Add VecPinToCPU() for CUDA vector and matrices
2) Move initialization of cuBLAS to PetscInitialize() since it takes 1/2 second and

Various improvements for GPUs (mostly for performance and CUDA)

1) Add VecPinToCPU() for CUDA vector and matrices
2) Move initialization of cuBLAS to PetscInitialize() since it takes 1/2 second and distorts timing with -log_view
3) Add logging for DMCreateMatrix (for large meshes this is very large)
4) Add VecGet/RestoreArrayWrite() to prevent unneeded copies from GPU (only implemented so far for CUDA);
added a small number of usages in the source so that snes tutorials ex19 does not do unneeded communication from the GPU
5) Automatically convert MAIJ matrices to AIJ for CUDA since they are not yet supported natively in PETSc's CUDA matrix implementation
6) Pinned objects should still use the CUDA/ViennaCL versions of Destroy to clean up the GPU stuff

Commit-type: feature

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Merge remote-tracking branch 'origin/barry/add-petscarrayxxx-ops' [PR #1771]

Add PetscArraycmp(), PetscArraycpy(), PetscArrayzero(), PetscArraymove(), update code to use new forms

Replace a couple multi-mallocs with a single malloc
Replace backwards loops in MatSetValues_*()

Add PetscArraycmp(), PetscArraycpy(), PetscArrayzero(), PetscArraymove(), update code to use new forms

Replace a couple multi-mallocs with a single malloc
Replace backwards loops in MatSetValues_*() with PetscArraymove()

Commit-type: style-fix, feature

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