Allow computing the linfty norm even for ghosted vectors.

git-svn-id: https://svn.dealii.org/trunk@22805 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/include/deal.II/lac/trilinos_vector_base.h b/deal.II/include/deal.II/lac/trilinos_vector_base.h
index 21d13c78ff9ca7b11b900646eecace7a7b4b7c23..22c8d8c5c7151aca41fefd918d59ab15aa3f62f6 100644 (file)
--- a/deal.II/include/deal.II/lac/trilinos_vector_base.h
+++ b/deal.II/include/deal.II/lac/trilinos_vector_base.h
@@ -1438,9 +1438,11 @@ namespace TrilinosWrappers
   VectorBase::real_type
   VectorBase::linfty_norm () const
   {
-    Assert (vector->Map().UniqueGIDs()==true,
-           ExcGhostsPresent());
-
+                                    // while we disallow the other
+                                    // norm operations on ghosted
+                                    // vectors, this particular norm
+                                    // is safe to run even in the
+                                    // presence of ghost elements
     TrilinosScalar d;
     const int ierr = vector->NormInf (&d);
     AssertThrow (ierr == 0, ExcTrilinosError(ierr));