From: Wolfgang Bangerth Date: Wed, 24 Aug 2011 22:19:37 +0000 (+0000) Subject: Mention Martin's fix for VectorTools::compute_no_normal_flux_constraints. X-Git-Tag: v8.0.0~3577 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0291b31785c238ace836cb3ad7810761f7769f40;p=dealii.git Mention Martin's fix for VectorTools::compute_no_normal_flux_constraints. git-svn-id: https://svn.dealii.org/trunk@24191 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/doc/news/changes.h b/deal.II/doc/news/changes.h index a0d7554544..d8a307474c 100644 --- a/deal.II/doc/news/changes.h +++ b/deal.II/doc/news/changes.h @@ -281,6 +281,15 @@ and DoF handlers embedded in higher dimensional space have been added.

Specific improvements

    +
  1. 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. +
    +(Martin Kronbichler, 2011/08/24) +
  2. 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.