]> https://gitweb.dealii.org/ - dealii-svn.git/commitdiff
Mention Martin's fix for VectorTools::compute_no_normal_flux_constraints.
authorbangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Wed, 24 Aug 2011 22:19:37 +0000 (22:19 +0000)
committerbangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Wed, 24 Aug 2011 22:19:37 +0000 (22:19 +0000)
git-svn-id: https://svn.dealii.org/trunk@24191 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/doc/news/changes.h

index a0d75545443ce7e386bf85c07beea1de0135cb67..d8a307474c039818c84c1c4fab5b6c6bd7d7834f 100644 (file)
@@ -281,6 +281,15 @@ and DoF handlers embedded in higher dimensional space have been added.
 <h3>Specific improvements</h3>
 
 <ol>
+<li> Fixed: The function VectorTools::compute_no_normal_flux_constraints had
+a problem that led to extremely difficult to pin down bugs when running
+with sufficiently many processors. Basically, the constraints computed
+by different processors did not agree which should be the independent
+degrees of freedom and which should be the constrained ones. The result
+were constraints that did not lead to a consistent linear system.
+<br>
+(Martin Kronbichler, 2011/08/24)
+
 <li> New: Added GridRefinement::hierarchical() to reorder the degrees of freedom
 by going through the cells in hierarchical order. This ensures consistent
 DoF numbering in parallel computations.

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