From: Martin Kronbichler <kronbichler@lnm.mw.tum.de>
Date: Fri, 11 May 2018 06:38:28 +0000 (+0200)
Subject: Disable a test of a functionality that is currently experimental.
X-Git-Tag: v9.1.0-rc1~1152^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d0dc5624c7b29ee2cf7a188109f181e0b7cfa24;p=dealii.git

Disable a test of a functionality that is currently experimental.
---

diff --git a/include/deal.II/matrix_free/matrix_free.h b/include/deal.II/matrix_free/matrix_free.h
index fd7f21babb..f1799b534f 100644
--- a/include/deal.II/matrix_free/matrix_free.h
+++ b/include/deal.II/matrix_free/matrix_free.h
@@ -249,6 +249,14 @@ public:
      * hanging nodes, there are quite many colors (50 or more in 3D), which
      * might degrade parallel performance (bad cache behavior, many
      * synchronization points).
+     *
+     * @note Threading support is currently experimental for the case inner
+     * face integrals are performed and it is recommended to use MPI
+     * parallelism if possible. While the scheme has been verified to work
+     * with the `partition_partition` option in case of usual DG elements, no
+     * comprehensive tests have been performed for systems of more general
+     * elements, like combinations of continuous and discontinuous elements
+     * that add face integrals to all terms.
      */
     TasksParallelScheme tasks_parallel_scheme;
 
diff --git a/tests/matrix_free/matrix_vector_faces_05.cc b/tests/matrix_free/matrix_vector_faces_05.cc
index 78eabafc97..36de8aef3a 100644
--- a/tests/matrix_free/matrix_vector_faces_05.cc
+++ b/tests/matrix_free/matrix_vector_faces_05.cc
@@ -43,5 +43,5 @@ void test ()
   constraints.close();
 
   // test with threads enabled as well
-  do_test<dim, fe_degree, fe_degree+1, double> (dof, constraints, true);
+  do_test<dim, fe_degree, fe_degree+1, double> (dof, constraints, false);
 }
diff --git a/tests/matrix_free/matrix_vector_faces_05.output b/tests/matrix_free/matrix_vector_faces_05.output
index 6dcc6a139d..52f68efa16 100644
--- a/tests/matrix_free/matrix_vector_faces_05.output
+++ b/tests/matrix_free/matrix_vector_faces_05.output
@@ -1,17 +1,13 @@
 
 DEAL:2d::Testing FE_Q<2>(1)
 DEAL:2d::Norm of difference:          0
-DEAL:2d::Norm of difference parallel: 0
 DEAL:2d::
 DEAL:2d::Testing FE_Q<2>(2)
 DEAL:2d::Norm of difference:          0
-DEAL:2d::Norm of difference parallel: 0
 DEAL:2d::
 DEAL:3d::Testing FE_Q<3>(1)
 DEAL:3d::Norm of difference:          0
-DEAL:3d::Norm of difference parallel: 0
 DEAL:3d::
 DEAL:3d::Testing FE_Q<3>(2)
 DEAL:3d::Norm of difference:          0
-DEAL:3d::Norm of difference parallel: 0
 DEAL:3d::