Fix compile warning

petsc/src/mat/impls/dense/seq/dense.c: In function ‘MatMatSolveTranspose_SeqDense_QR’:
petsc/src/mat/impls/dense/seq/dense.c:729:8: error: ‘y’ may be used uninitialized in this f

Fix compile warning

petsc/src/mat/impls/dense/seq/dense.c: In function ‘MatMatSolveTranspose_SeqDense_QR’:
petsc/src/mat/impls/dense/seq/dense.c:729:8: error: ‘y’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
y = *_y;
~~~~~^~~~~
petsc/src/mat/impls/dense/seq/dense.c:817:19: note: ‘y’ was declared here
PetscScalar *y;
^

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Merge remote-tracking branch 'origin/jose/fix-manpages'

Fix manpages to avoid errors reported by doctext

See merge request petsc/petsc!4309

Merge branch 'rmills/feature-matgetcolumnreductions' into 'main'

Add MatGetColumnReductions()

See merge request petsc/petsc!4272

Add MatGetColumnSums() and MatGetColumnMeans() (and real and imaginary part variants)

MatGetColumnReductions() now takes a PetscInt so ReductionType or NormType members can be passed.
ReductionType

Add MatGetColumnSums() and MatGetColumnMeans() (and real and imaginary part variants)

MatGetColumnReductions() now takes a PetscInt so ReductionType or NormType members can be passed.
ReductionType no longer duplicates entries of NormType.
Replace MatGetColumnNorms_SeqBAIJ() with MatGetColumnReductions_SeqBAIJ()

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Fix manpages: Input/Output Parameter --> Parameters

Added MatGetColumnReductions(). MatGetColumnNorms() is now a wrapper that calls MatGetColumnReductions().

Made changes requested by Richard.

Merge branch 'jose/spelling-errors' into 'main'

Fix many spelling errors in manpages and comments

See merge request petsc/petsc!4283

Fix spelling errors in manpages and comments

Merge branch 'barry/2021-05-16/fix-double-lines' into 'main'

Fix typos in source

See merge request petsc/petsc!3984

Remove all double blank lines from source

Commit-type: petsc-style
/2h

Merge branch 'barry/2021-05-02/fix-logging-no-symbolic-factorization' into 'main'

For factorization types/packages that do not perform a seperate symbolic phase...

See merge request petsc/petsc!3943

For factorization types/packages that do not perform a seperate symbolic phase do not log the event.

Also log the "numerical" factorization as an entire factorization

An alternative would be to pro

For factorization types/packages that do not perform a seperate symbolic phase do not log the event.

Also log the "numerical" factorization as an entire factorization

An alternative would be to provide MatXXXFactorSetUp_XXX that is called in lieu of the symbolic function
for such types/packages but requires more changes to the code.

Commit-type: bug fix for logging
/spend 45m
Reported-by: Xiaoye S. Li <xsli@lbl.gov>
Reported-by: Stephen Jardin <jardin@pppl.gov>
Reported-by: Jin Chen <jchen@pppl.gov>
Reported-by: Nan Ding <nanding@lbl.gov>
Reported-by: Yang Liu <liuyangzhuan@lbl.gov>

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Merge branch 'tisaac/feature-qr-factorization-cuda' into 'main'

QR factorization: cusolver dense

See merge request petsc/petsc!3690

Merge branch 'stefanozampini/feature-vecreciprocalongpu' into 'main'

Minor GPU additions

See merge request petsc/petsc!3862

MATSEQDENSECUDA: optimize using cuda*2d API for matrices with LDA

Create PetscCuBLASInt

Use cusolverDn QR factorization

Squashme: make sure seqdense matrices can still be solved with cuda

Fix memory leak in densecuda.cu

Use workvec to avoid cudaMalloc in MatSolve_SeqDenseCUDA_Interna

Use cusolverDn QR factorization

Squashme: make sure seqdense matrices can still be solved with cuda

Fix memory leak in densecuda.cu

Use workvec to avoid cudaMalloc in MatSolve_SeqDenseCUDA_Internal

squashme: remove timings

squashme: simplify copy-back logic in MatMatSolve_SeqDenseCUDA_Internal

Remove WaitForCUDA()

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Merge remote-tracking branch 'origin/release'

Merge branch 'jolivet/fix-minor-improvements' into 'release'

Minor improvements

See merge request petsc/petsc!3829

Merge remote-tracking branch 'origin/release'

Merge branch 'hzhang/fix-matrestorerow' into 'release'

bugfix for MatRestoreRow_xxx()

See merge request petsc/petsc!3826

Minor improvements

bugfix for MatRestoreRow_xxx()
Reported-by: Damian Marek <damian.marek@mail.utoronto.ca>

Merge branch 'barry/2021-03-16/mat-factor-get-can-use-ordering' into 'main'

Change MatFactorGetUseOrdering() to MatFactorGetCanUseOrdering()

See merge request petsc/petsc!3739

Introduce PCFactorSetDefaultOrdering_Factor() to allow each factorization package
to indicate its preferered ordering, which may be external (its own) or one of PETSc.

This also affects factorizatio

Introduce PCFactorSetDefaultOrdering_Factor() to allow each factorization package
to indicate its preferered ordering, which may be external (its own) or one of PETSc.

This also affects factorization like dense PETsc where the ordering passed in by PETSc is ignored and not needed.

Also fixed options for MUMPS and SuiteSparse where users needed to pass a particular options database option
to the package (MUMP or KLU) indicating they should use the PETSc provided ordering. Now if the PETSc provided ordering is provided
these packages automatically use them without need a special option. This simplifies ordering usage for external packages

Commit-type: optimization, bug-fix, testing-fix, style-fix
/spend 6h

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