Merge branch 'barry/2020-10-08/fix-mpi-error-codes' into 'master'

Convert MPI error type to PETSc error with string message for all MPI calls

See merge request petsc/petsc!3326

Convert MPI error type to PETSc error with string message for all MPI calls

Now PETSc examples will ONLY return PETSc error codes and never MPI error codes directly so we can understand and post-pro

Convert MPI error type to PETSc error with string message for all MPI calls

Now PETSc examples will ONLY return PETSc error codes and never MPI error codes directly so we can understand and post-process their
errors better.

The test harness will now automatically retry tests that fail with MPI, this may help with Intel MPI that produces
seemingly random failures.

Commit-type: error-checking
/spend 30m

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Merge branch 'knepley/feature-plex-adaptive-interpolation' into 'master'

Knepley/feature plex adaptive interpolation

See merge request petsc/petsc!3018

Plex: Tests for adaptive interpolation
SNES ex8: Test for adaptive interpolation
SNES ex13: Added simple example of adaptive interpolation in GMG
SNES ex12: Added checkerboard test from Brannic

Plex: Tests for adaptive interpolation
SNES ex8: Test for adaptive interpolation
SNES ex13: Added simple example of adaptive interpolation in GMG
SNES ex12: Added checkerboard test from Brannick et.al. optimal interpolation paper
Mat ex7/ex182 Filter out info for libpetscbamg from tests

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Merge branch 'barry/2020-06-23/fix-init-fptrap-spelling' into 'master'

Fix spelling of PetscDetermineInitalFPTrap()

See merge request petsc/petsc!2905

Fix spelling of PetscDetermineInitalFPTrap()

Commit-type: style-fix
Time: .05 hours
Reported-by: "Jose E. Roman" <jroman@dsic.upv.es>

Merge branch 'barry/2020-06-13/fix-init-fptrap' into 'master'

Bug fix for initialization of _trapmode on Linux and MacOS when exception...

See merge request petsc/petsc!2877

Bug fix for initialization of _trapmode on Linux and MacOS when exception handling of divide by zero is enabled

Cleanup and extension of floating point exception handling.
Now properly turns

Bug fix for initialization of _trapmode on Linux and MacOS when exception handling of divide by zero is enabled

Cleanup and extension of floating point exception handling.
Now properly turns off floating point trapping for Lapack when Fortran linker turns on divide by zero trapping

Commit-type: error-checking, bug-fix, portability-fix, feature, documentation
Reported-by: Sanjay Govindjee <s_g@berkeley.edu>

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Merge branch 'jed/promote-examples-tests-tutorials' [petsc/petsc!2610]

* jed/promote-examples-tests-tutorials:
Promote examples/{tests,tutorials}/ to {tests,tutorials}/

Promote examples/{tests,tutorials}/ to {tests,tutorials}/

This shortens paths and improves consistency between test target names
and paths to the source and output files. Most of the work was
compl

Promote examples/{tests,tutorials}/ to {tests,tutorials}/

This shortens paths and improves consistency between test target names
and paths to the source and output files. Most of the work was
completed by this script, followed by mild cleanup of nonconforming
cases.

for makefile in `git ls-files 'src/*makefile'`; do
if rg -q 'DIRS.*\bexamples\b' $makefile; then
base=$(dirname $makefile)
dirs=$(cd $base/examples && ls -d tests tutorials 2>/dev/null | xargs echo)
perl -pi -e "s#^(DIRS.*)\bexamples\b#\1${dirs}#" $makefile
git rm $base/examples/makefile
for t in $dirs; do
git mv $base/examples/$t $base/
perl -pi -e "s#^(LOCDIR[[:space:]]*=).*#\1 $base/$t/#" $base/$t
done
fi
done

git grep -l -E -z 'examples/(tutorials|tests)' | xargs -0 perl -pi -e 's#examples/(tutorials|tests)#\1#g'
git checkout @ \
src/docs/website/documentation/changes/ \
src/benchmarks/results/

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