From: kronbichler <kronbichler@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Mon, 20 Jan 2014 08:59:59 +0000 (+0000)
Subject: Fix failure of multigrid on some OpenMPI versions
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10d8ff0cedb7539ad82113df6381de934efca954;p=dealii-svn.git

Fix failure of multigrid on some OpenMPI versions

git-svn-id: https://svn.dealii.org/trunk@32259 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/source/dofs/dof_handler_policy.cc b/deal.II/source/dofs/dof_handler_policy.cc
index 3e71bbd9c1..c8bb6d84f0 100644
--- a/deal.II/source/dofs/dof_handler_policy.cc
+++ b/deal.II/source/dofs/dof_handler_policy.cc
@@ -1892,8 +1892,8 @@ namespace internal
             unsigned int sent=needs_to_get_cells.size();
             unsigned int recv=senders.size();
 
-            MPI_Reduce(&sent, &sum_send, 1, MPI_UNSIGNED, MPI_SUM, 56345, tr->get_communicator());
-            MPI_Reduce(&recv, &sum_recv, 1, MPI_UNSIGNED, MPI_SUM, 56346, tr->get_communicator());
+            MPI_Allreduce(&sent, &sum_send, 1, MPI_UNSIGNED, MPI_SUM, tr->get_communicator());
+            MPI_Allreduce(&recv, &sum_recv, 1, MPI_UNSIGNED, MPI_SUM, tr->get_communicator());
             Assert(sum_send==sum_recv, ExcInternalError());
           }
 #endif