diff --git a/packages/blackdynamite.cmake b/packages/blackdynamite.cmake
new file mode 100644
index 000000000..109db5a83
--- /dev/null
+++ b/packages/blackdynamite.cmake
@@ -0,0 +1,71 @@
+#===============================================================================
+# @file   blackdynamite.cmake
+#
+# @author Nicolas Richart <nicolas.richart@epfl.ch>
+#
+# @date   Tue Nov 29 15:16:35 2011
+#
+# @brief  package description for BlackDynamite support
+#
+# @section LICENSE
+#
+# Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
+# Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
+#
+# Akantu is free  software: you can redistribute it and/or  modify it under the
+# terms  of the  GNU Lesser  General Public  License as  published by  the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
+# details.
+#
+# You should  have received  a copy  of the GNU  Lesser General  Public License
+# along with Akantu. If not, see <http://www.gnu.org/licenses/>.
+#
+#===============================================================================
+
+option(AKANTU_USE_BLACKDYNAMITE "Use cpp-array library" OFF)
+find_package(Subversion)
+
+if(SUBVERSION_FOUND)
+  mark_as_advanced(AKANTU_BLACKDYNAMITE)
+  if(AKANTU_USE_BLACKDYNAMITE)
+    set(BLACKDYNAMITE_SOURCE_DIR ${PROJECT_SOURCE_DIR}/third-party/blackdynamite)
+
+    if(EXISTS ${BLACKDYNAMITE_SOURCE_DIR})
+      execute_process(
+	COMMAND ${Subversion_SVN_EXECUTABLE} up ${BLACKDYNAMITE_SOURCE_DIR}
+	OUTPUT_VARIABLE _revision)
+      string(REGEX REPLACE ".*At revision ([0-9]*)\\..*" "\\1" _rev "${_revision}")
+      message(STATUS "Updating BlackDynamite: r${_rev} dynamite! dynamite!")
+    else()
+      message(STATUS "Checking out BlackDynamite: Can you digg it!")
+      execute_process(
+	COMMAND ${Subversion_SVN_EXECUTABLE} co svn+ssh://lsmssrv1.epfl.ch/space/repositories/SimulPack/BlackDynamite ${BLACKDYNAMITE_SOURCE_DIR}
+	OUTPUT_QUIET)
+    endif()
+
+
+    set(BLACKDYNAMITE_TARGETS_EXPORT ${AKANTU_TARGETS_EXPORT})
+    add_subdirectory(third-party/blackdynamite)
+
+    list(APPEND AKANTU_EXTERNAL_LIBRARIES blackdynamite)
+    list(APPEND AKANTU_EXTERNAL_LIB_INCLUDE_DIR ${PROJECT_SOURCE_DIR}/third-party/blackdynamite/src)
+
+    list(APPEND AKANTU_EXPORT_LIST blackdynamite)
+    list(APPEND AKANTU_OPTION_LIST BLACKDYNAMITE)
+
+    set(AKANTU_BLACKDYNAMITE_INCLUDE_DIR ${PROJECT_SOURCE_DIR}/third-party/blackdynamite/src)
+
+    set(AKANTU_BLACKDYNAMITE ON)
+  else()
+    set(AKANTU_BLACKDYNAMITE OFF)
+  endif()
+else()
+  add_optional_external_package(BlackDynamite "Add BlackDynamite support in akantu" OFF PREFIX BlackDynamite)
+endif()
+
+mark_as_advanced(AKANTU_BLACKDYNAMITE)
\ No newline at end of file
diff --git a/src/synchronizer/mpi_type_wrapper.hh b/src/synchronizer/mpi_type_wrapper.hh
new file mode 100644
index 000000000..35a684484
--- /dev/null
+++ b/src/synchronizer/mpi_type_wrapper.hh
@@ -0,0 +1,78 @@
+/**
+ * @file   mpi_type_wrapper.hh
+ *
+ * @author Nicolas Richart <nicolas.richart@epfl.ch>
+ *
+ * @date   Mon Oct 28 13:53:32 2013
+ *
+ * @brief  Wrapper on MPI types to have a better separation between libraries
+ *
+ * @section LICENSE
+ *
+ * Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
+ * Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
+ *
+ * Akantu is free  software: you can redistribute it and/or  modify it under the
+ * terms  of the  GNU Lesser  General Public  License as  published by  the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
+ * details.
+ *
+ * You should  have received  a copy  of the GNU  Lesser General  Public License
+ * along with Akantu. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/* -------------------------------------------------------------------------- */
+#include <mpi.h>
+/* -------------------------------------------------------------------------- */
+#include "aka_common.hh"
+#include "static_communicator_mpi.hh"
+/* -------------------------------------------------------------------------- */
+
+#ifndef __AKANTU_MPI_TYPE_WRAPPER_HH__
+#define __AKANTU_MPI_TYPE_WRAPPER_HH__
+
+__BEGIN_AKANTU__
+
+class MPITypeWrapper {
+public:
+  MPITypeWrapper(StaticCommunicatorMPI & static_comm) : static_comm(static_comm) {
+  }
+
+  template<typename T>
+  static inline MPI_Datatype getMPIDatatype();
+
+  inline void setMPICommunicator(MPI_Comm comm) {
+    communicator = comm;
+    Int prank, psize;
+    MPI_Comm_rank(communicator, &prank);
+    MPI_Comm_size(communicator, &psize);
+
+    static_comm.setRank(prank);
+    static_comm.setSize(psize);
+  }
+
+  inline MPI_Comm getMPICommunicator() const {
+    return communicator;
+  }
+
+  static MPI_Op getMPISynchronizerOperation(const SynchronizerOperation & op) {
+    return synchronizer_operation_to_mpi_op[op];
+  }
+
+private:
+  StaticCommunicatorMPI & static_comm;
+
+  MPI_Comm communicator;
+
+  static MPI_Op synchronizer_operation_to_mpi_op[_so_null + 1];
+};
+
+__END_AKANTU__
+
+#endif /* __AKANTU_MPI_TYPE_WRAPPER_HH__ */
diff --git a/test/test_model/test_solid_mechanics_model/patch_tests/data/_pentahedron_6.msh b/test/test_model/test_solid_mechanics_model/patch_tests/data/_pentahedron_6.msh
new file mode 100644
index 000000000..342fde160
--- /dev/null
+++ b/test/test_model/test_solid_mechanics_model/patch_tests/data/_pentahedron_6.msh
@@ -0,0 +1,116 @@
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+$EndElements