Merge branch 'maint'

doc fixes

Merge branch 'maint'

fix typo in b6d85d1cb44faf16715100226c68bc71fa20b5b3

Merge remote-tracking branch 'origin/maint'

Fix PetscViewerHDF5Load() manpage.

Wrong comment end.

Merge remote-tracking branch 'origin/maint'

Add clarification of what block size means for IS.

Thanks-to: Jed Brown <jed@jedbrown.org>

Fix a bug related to IS_GTOLM_MASK and also clarify the document

Reported-by: Guangming Wang <wgm@mail.dlut.edu.cn>

Replace use of 1 with appropriate error code; use PetscObjecComm() instead of PETSC_COMM_SELF for errors when appropriate

Commit-type: error-checking, testing-fix, style-fix, examples

Merge branch 'stefanozampini/fix-sfcompose' into 'master'

Allow sparse leaves in SFCompose operations

See merge request petsc/petsc!2164

SF test ex5: test PetscSFCompose{Inverse}SF

PetscSFCompose{Inverse}: support sparsity in leaf space

Improve notes for "non-true-star-forests" cases

SF: treat PETSc builtin datatypes the same way as MPI builtin datatypes

So that we won't duplicate PETSc builtin datatypes like MPIU_2INT. Otherwise,
we can not simply use "if (type != MPIU_2INT) SE

SF: treat PETSc builtin datatypes the same way as MPI builtin datatypes

So that we won't duplicate PETSc builtin datatypes like MPIU_2INT. Otherwise,
we can not simply use "if (type != MPIU_2INT) SETERRQ()" in code.

Add support to unwrap a type created by MPI_Type_contiguous(1,..)
Let dumb types use their own type

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minor

Add dummy initialize values and change code organization slightly to prevent incorrect compiler warnings about unitialized values

Fix a int that should be a size_t, fix handling of long

Add additio

Add dummy initialize values and change code organization slightly to prevent incorrect compiler warnings about unitialized values

Fix a int that should be a size_t, fix handling of long

Add additional details for PetscDataType to prevent possible confusion

Commit-type: portability-fix
Reported-by: Satish Balay <balay@mcs.anl.gov>
Thanks-to: Jed Brown <jed@jedbrown.org>

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Added SF GPU support

Move related routines together

Update pack/unpack routines to do packing/unpacking for all neighbors in at most two routines

One is used to pack data in self to self communication; The second is used for remote communication.
So

Update pack/unpack routines to do packing/unpacking for all neighbors in at most two routines

One is used to pack data in self to self communication; The second is used for remote communication.
So that on GPU, we can use at most two kernels to do packing/packing for all neighbors instead of multiple kernels

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Code style change

Remove wrong usage of int datatype from PETSc code

Merge branch 'master' into 'master'

Add --download-hpddm

See merge request petsc/petsc!1994

Fixes and improvements for PCHPDDM and KSPHPDDM

minor

Section: Put header in the "right place"

and fix compile warnings