PCBDDC: minor fixes for sequential runs

Merge branch 'maint'

PCBDDC: fixes for the benign subspace technique

- Fix incorrect flagging of benign subdomains
- Keep recurring on coarse solver only until we have benign subs
If we no longer have benign subs, we

PCBDDC: fixes for the benign subspace technique

- Fix incorrect flagging of benign subdomains
- Keep recurring on coarse solver only until we have benign subs
If we no longer have benign subs, we need a full bddc application (recursion is still possible)

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PCIS: added flag PCISSetUp to setup just the l2g stuff

Man pages: add newlines after "Notes:"

This allows for proper formatting from sowing.

On OS X (using gsed, not the default BSD sed), from the PETSc root directory:

find src include -type f \(

Man pages: add newlines after "Notes:"

This allows for proper formatting from sowing.

On OS X (using gsed, not the default BSD sed), from the PETSc root directory:

find src include -type f \( -name "*.c" -or -name "*.h" -or -name "*.cxx" \) | xargs gsed -i 's/Notes\s*:\s*\(\w.*\)/Notes:\n \1/'

This adds a newline and 4 spaces whenever "Notes:" is followed by any "word" character, in any .c, .h, or .cxx file in src/ or include/

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Man pages: capitalize "notes:" to "Notes:"

On OS X (using gsed, not default BSD sed), from PETSc root directory,

find src include -type f \( -name "*.h" -or -name "*.c" \) | xargs gsed -i 's/no

Man pages: capitalize "notes:" to "Notes:"

On OS X (using gsed, not default BSD sed), from PETSc root directory,

find src include -type f \( -name "*.h" -or -name "*.c" \) | xargs gsed -i 's/notes:/Notes:/g'

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Deprecate DMSet/GetDefaultSection() for DMSet/GetSection()

Revert manual page change per Matt's preference

Commit-type: style-fix
Thanks-to: Matthew Knepley

Merge branch 'stefano_zampini/fix-matis-dmda-l2g'

PCBDDC: yet another recipe

Same as before, but save one factorization

Change PetscStrncat() to PetscStrlcat() to match BSD API where l represents total length

Update many uses of PetscStrcpy() and PetscStrcat() to the safer PetscStrncpy() and PetscStrlcat()

Commit-ty

Change PetscStrncat() to PetscStrlcat() to match BSD API where l represents total length

Update many uses of PetscStrcpy() and PetscStrcat() to the safer PetscStrncpy() and PetscStrlcat()

Commit-type: style-fix, feature
Thanks-to: Jed Brown

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PCBDDC: another recipe, this looks very promising

PCBDDC: added a couple of more recipes for Stokes

initialize B_neigs to 0 and revert order of eigenvalue computation for recipe 2

PCBDDCGRAPH: fix a possible deadlock in the code

use a send buffer instead of a temporary variable

PCIS: if stiffness scaling is required, overwrite zero diagonal entries with 1

PCBDDC: return if maxneighs = 0

PCBDDC: cosmetic fixes

PCBDDC: added cc-based corner selection when coordinates are available

PCBDDC: use nearnullspace in alternative and pass it to the local solvers

Remove KSPSetUp call for local solvers that may prevent to properly setup approximate local solvers

PCBDDC: implement stabilized gram-schmidt for orthonormalization

PCBDDC: pass local coordinates if the local solver supports PCSetCoordinates

PCBDDC: string viewer not used

PCBDDC: added View ops to nullspace corrected solver

clean up the code a bit

PCBDDCSUBSCHURS: minor fixes

PCBDDC: import dofs coordinates into PCBDDCGraph

this is to enable face-based corner selection

PCBDDC: compress constraint matrix