Merge branch 'jolivet/clang-format-21' into 'main'

clang-format-21

See merge request petsc/petsc!8202

One-liners from petsc/petsc!5344 and petsc/petsc!5557

Slightly reworked regular expression

git ls-files -z -- '*.c' '*.cxx' '*.cu' '*.h' '*.hpp' '*.cpp' | while IFS= read -r -d '' file; do
cat

One-liners from petsc/petsc!5344 and petsc/petsc!5557

Slightly reworked regular expression

git ls-files -z -- '*.c' '*.cxx' '*.cu' '*.h' '*.hpp' '*.cpp' | while IFS= read -r -d '' file; do
cat $file | tr '\n' '\r' | sed -E 's/\r([ ]*)(for|if|while|else) ([^\r]*)\{\r[ ]*Petsc([a-zA-Z]*)\(([^\r]*)\);\r[ ]*\}\r/\r\1\2 \3Petsc\4(\5);\r/g' | tr '\r' '\n' > ${file}.joe; mv ${file}.joe ${file}
done

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Merge branch 'tisaac/feature-lmvm-rework' into 'main'

MatLMVM rework

See merge request petsc/petsc!6401

Mat: Fix and improve the performance of dense matrix multiplication

Mat: Add MATDENSEFROMVECTYPE constructor type

Now in a tests set you can do

```
testset:
args: -mat_type densefromvectype

Mat: Fix and improve the performance of dense matrix multiplication

Mat: Add MATDENSEFROMVECTYPE constructor type

Now in a tests set you can do

```
testset:
args: -mat_type densefromvectype
test: test_cuda
requires: cuda
args: -vec_type veccuda
test: test_hip
requires: hip
args: -vec_type vechip
```

(This assumes that you call `MatSetVecType()` before you call
`MatSetFromOptions()`)

Mat_MPIDense: Cache offsets of MatDenseGetSubMatrix() to avoid communication in more cases

Mat: Add missing implementations for internal "MatMultColumnRange()" interface

Mat_MPIDense: Fix the zeroing of buffers in multiplication routines

Mat_MPIDense: Add optimization of MatMatMult routines when all columns are owned by rank 0

The communication for intermediate buffers can be handled with allreduce / bcast operations,
but we use the PetscSF matvec context instead of MPI routines directly so that we will
use gpu-aware MPI if possible.

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Merge branch 'jolivet/partially-revert-8099' into 'main'

Partially revert !8099 for non-blocking collectives and peer-to-peer communications

See merge request petsc/petsc!8103

Partially revert !8099 for non-blocking collectives

Merge branch 'jolivet/remove-unneeded-mpicast' into 'main'

Remove unneeded PetscMPIIntCast() for routines using PetscCount

Closes #1661

See merge request petsc/petsc!8099

Remove unneeded PetscMPIIntCast() for routines using PetscCount

Fix #1661

Merge branch 'stefanozampini/useless-cast' into 'main'

Remove useless cast

See merge request petsc/petsc!7894

Brain dead fixes for useless casts

Merge branch 'barry/2024-09-02/rebased-fix-conversion-warnings' into 'main'

Compiler finds (and forbid) casts from higher precision integers to lower

See merge request petsc/petsc!7806

Add support to MPIU_Allreduce to prevent int overflow with a single integer argument

Add to CI compilers flags '-Wconversion', '-Wno-sign-conversion', '-Wno-float-conversion', '-Wno-implicit-float-conversion']

Also fix the code to repository to compile cleanly with these flags in th

Add to CI compilers flags '-Wconversion', '-Wno-sign-conversion', '-Wno-float-conversion', '-Wno-implicit-float-conversion']

Also fix the code to repository to compile cleanly with these flags in the CI

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Merge branch 'jczhang/2024-06-14/feature-improve-mpi-pkg-macros' into 'main'

Improve various MPI packages' macro and try to make them consistent with other packages

See merge request petsc/petsc!76

Merge branch 'jczhang/2024-06-14/feature-improve-mpi-pkg-macros' into 'main'

Improve various MPI packages' macro and try to make them consistent with other packages

See merge request petsc/petsc!7633

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Config: get rid of PETSC_HAVE_OMPI_MAJOR_VERSION and include it in petscpkg_version.h

Merge remote-tracking branch 'origin/release'

Merge branch 'jczhang/2024-05-31/fix-petscsf-gpu-bug' into 'release'

Need to sync the stream before MPI send even when there is nothing to send (but has something to receive)

See merge request pets

Merge branch 'jczhang/2024-05-31/fix-petscsf-gpu-bug' into 'release'

Need to sync the stream before MPI send even when there is nothing to send (but has something to receive)

See merge request petsc/petsc!7597

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SF: need to sync the stream before MPI send even when there is nothing to send but has something to receive

There might be pending gpu operations on the receive buffer. Without synchronization, say

SF: need to sync the stream before MPI send even when there is nothing to send but has something to receive

There might be pending gpu operations on the receive buffer. Without synchronization, say we proceed to MPI_Waitall(). MPI might stage on host and do a H2D copy on an internal stream on the receive side. Previous gpu operations COULD happen after the H2D copy, causing a write-after-write reorder violation!

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Merge remote-tracking branch 'origin/release'

Merge branch 'barry/2023-12-31/minor-website-fixes/release' into 'release'

Minor fixes to website material

See merge request petsc/petsc!7157

Minor fixes to website material

Merge branch 'jczhang/2023-10-16/feature-persistent-mpi-nbr' into 'main'

SF: Add MPI-4.0 persistent MPI neighborhood collectives support

See merge request petsc/petsc!6943

PetscSF: add MPI-4.0 persistent neighborhood collectives support

PetscSF: refactor and modulize the code to better support persistent communication

Merge remote-tracking branch 'origin/release'