Merge branch 'haplav/fix-matload-dense-hdf5' into 'main'

fix MatLoad_Dense_HDF5

See merge request petsc/petsc!4044

Merge branch 'stefanozampini/fix-warnings-nec' into 'main'

Stefanozampini/fix warnings nec

See merge request petsc/petsc!4047

PetscViewerHDF5Load: improve error messages

PetscViewerHDF5Load: fix complex + horizontal

HDF5 I/O: make 'horizontal' member of PetscViewer_HDF5;

set now true not only on presence of HDF5 attribute "MATLAB_class" but
also always for MATDENSE

viewerhdf5impl.h: include viewerimpl.h

Merge branch 'knepley/fix-plex-hybrid-geometry' into 'main'

Plex: Fix hybrid integration

See merge request petsc/petsc!4048

MPI: define proper datatypes for composite reductions

this was a long-standing bug, dating back to 1996 or so

Fix compiler warnings

Section: Fixed CreateSupersection()
- Field constraint indices start from 0, not the field offset

DS+Section: Add checks for constrint indices

SFHIP: bring back some comment-out code

SFHIP: minor update to ease visual comparison with sfcuda

Vec: added more HIP tests

VECHIP: align with CUDA implementantion

vimdiff gives a nice difference

VECCUDA: minor update

SFHIP: PETSC_HAVE_COMPLEX codepath does not compile on SPOCK

/autofs/nccs-svm1_home1/szampini/Devel-spock/petsc/src/vec/is/sf/impls/basic/hip/sfhip.hip.cpp:140:107: error: no viable overloaded '+='

SFHIP: PETSC_HAVE_COMPLEX codepath does not compile on SPOCK

/autofs/nccs-svm1_home1/szampini/Devel-spock/petsc/src/vec/is/sf/impls/basic/hip/sfhip.hip.cpp:140:107: error: no viable overloaded '+='
template<typename Type> struct Add {__device__ Type operator() (Type& x,Type y) const {Type old = x; x += y; return old;}};
~ ^ ~
/autofs/nccs-svm1_home1/szampini/Devel-spock/petsc/src/vec/is/sf/impls/basic/hip/sfhip.hip.cpp:69:27: note: in instantiation of member function 'Add<std::complex<double>>::operator()' requested here
for (i=0; i<MBS; i++) op(data[t+i],buf[s+i]);

show more ...

Vec tests: add -j flags to HIP tests

ex4 is currently broken on SPOCK

Remove all double blank lines from source

Commit-type: petsc-style
/2h

Merge branch 'jose/misc-fixes' into 'main'

Miscellaneous fixes

See merge request petsc/petsc!4002

Remove use of PETSC_SKIP_CXX_COMPLEX_FIX in petsc source code

Check type of input vector in VecCopy_Nest()

With this change the error is 'Object (seq) is not nest' rather than the
more cryptic 'Nest vector argument 2 not setup'

VecScatter: print sizes if they de not match

Merge remote-tracking branch 'origin/release'

Section: Fix docs
Reported-by: Barry Smith <bsmith@mcs.anl.gov>