diff --git a/src/pe/amr/BlockInfo.h b/src/pe/amr/BlockInfo.h
new file mode 100644
index 0000000000000000000000000000000000000000..fccc9656bc50865de3e38dadb8454af468935370
--- /dev/null
+++ b/src/pe/amr/BlockInfo.h
@@ -0,0 +1,87 @@
+//======================================================================================================================
+//
+// This file is part of waLBerla. waLBerla is free software: you can
+// redistribute it and/or modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// waLBerla 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 General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with waLBerla (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file BlockInfo.h
+//! \author Sebastian Eibl <sebastian.eibl@fau.de>
+//
+//======================================================================================================================
+
+#pragma once
+
+#include <core/mpi/RecvBuffer.h>
+#include <core/mpi/SendBuffer.h>
+
+#include <ostream>
+
+namespace walberla {
+namespace pe {
+
+struct BlockInfo
+{
+ uint_t numberOfLocalBodies;
+ uint_t numberOfShadowBodies;
+
+ BlockInfo()
+ : numberOfLocalBodies(0)
+ , numberOfShadowBodies(0)
+ {}
+
+ BlockInfo(const uint_t particles, const uint_t sparticles)
+ : numberOfLocalBodies(particles)
+ , numberOfShadowBodies(sparticles)
+ {}
+
+ BlockInfo& operator+=( const BlockInfo& rhs )
+ {
+ numberOfLocalBodies += rhs.numberOfLocalBodies;
+ numberOfShadowBodies += rhs.numberOfShadowBodies;
+ return *this;
+ }
+};
+
+inline
+BlockInfo operator+ ( const BlockInfo& lhs, const BlockInfo& rhs )
+{
+ BlockInfo result(lhs);
+ result += rhs;
+ return result;
+}
+
+inline
+std::ostream& operator<<( std::ostream& os, const BlockInfo& bi )
+{
+ os << bi.numberOfLocalBodies << " / " << bi.numberOfShadowBodies;
+ return os;
+}
+
+template< typename T, // Element type of SendBuffer
+ typename G> // Growth policy of SendBuffer
+mpi::GenericSendBuffer<T,G>& operator<<( mpi::GenericSendBuffer<T,G> & buf, const BlockInfo& info )
+{
+ buf.addDebugMarker( "pa" );
+ buf << info.numberOfLocalBodies << info.numberOfShadowBodies;
+ return buf;
+}
+
+template< typename T> // Element type of SendBuffer
+mpi::GenericRecvBuffer<T>& operator>>( mpi::GenericRecvBuffer<T> & buf, BlockInfo& info )
+{
+ buf.readDebugMarker( "pa" );
+ buf >> info.numberOfLocalBodies >> info.numberOfShadowBodies;
+ return buf;
+}
+
+}
+}
diff --git a/src/pe/amr/InfoCollection.cpp b/src/pe/amr/InfoCollection.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f568a3cca62eada47d72be977d834ca8d98532d6
--- /dev/null
+++ b/src/pe/amr/InfoCollection.cpp
@@ -0,0 +1,67 @@
+//======================================================================================================================
+//
+// This file is part of waLBerla. waLBerla is free software: you can
+// redistribute it and/or modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// waLBerla 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 General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with waLBerla (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file InfoCollection.cpp
+//! \author Sebastian Eibl <sebastian.eibl@fau.de>
+//
+//======================================================================================================================
+
+#include "InfoCollection.h"
+
+#include "pe/rigidbody/BodyStorage.h"
+
+#include "blockforest/BlockID.h"
+#include "core/mpi/BufferSystem.h"
+
+namespace walberla {
+namespace pe {
+
+void createWithNeighborhood(const BlockForest& bf, const BlockDataID storageID, InfoCollection& ic )
+{
+ ic.clear();
+
+ mpi::BufferSystem bs( MPIManager::instance()->comm(), 756 );
+
+ for (auto blockIt = bf.begin(); blockIt != bf.end(); ++blockIt)
+ {
+ const blockforest::Block* block = static_cast<const blockforest::Block*> (&(*blockIt));
+ Storage const * storage = block->getData< Storage >( storageID );
+ BodyStorage const & localStorage = (*storage)[StorageType::LOCAL];
+ BodyStorage const & shadowStorage = (*storage)[StorageType::SHADOW];
+ ic.insert( InfoCollection::value_type(block->getId(), BlockInfo(localStorage.size(), shadowStorage.size())) );
+
+ for( uint_t nb = uint_t(0); nb < block->getNeighborhoodSize(); ++nb )
+ {
+ bs.sendBuffer( block->getNeighborProcess(nb) ) << InfoCollection::value_type(block->getId(), BlockInfo(localStorage.size(), shadowStorage.size()));
+ }
+ }
+
+ // size of buffer is unknown and changes with each send
+ bs.setReceiverInfoFromSendBufferState(false, true);
+ bs.sendAll();
+
+ for( auto recvIt = bs.begin(); recvIt != bs.end(); ++recvIt )
+ {
+ while( !recvIt.buffer().isEmpty() )
+ {
+ InfoCollectionPair val;
+ recvIt.buffer() >> val;
+ ic.insert(val);
+ }
+ }
+}
+
+}
+}
diff --git a/src/pe/amr/InfoCollection.h b/src/pe/amr/InfoCollection.h
new file mode 100644
index 0000000000000000000000000000000000000000..3acdc2f27b01ffa2f3f5d752325d8ffed336845a
--- /dev/null
+++ b/src/pe/amr/InfoCollection.h
@@ -0,0 +1,38 @@
+//======================================================================================================================
+//
+// This file is part of waLBerla. waLBerla is free software: you can
+// redistribute it and/or modify it under the terms of the GNU General Public
+// License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// waLBerla 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 General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with waLBerla (see COPYING.txt). If not, see <http://www.gnu.org/licenses/>.
+//
+//! \file InfoCollection.h
+//! \author Sebastian Eibl <sebastian.eibl@fau.de>
+//
+//======================================================================================================================
+
+#pragma once
+
+#include "BlockInfo.h"
+
+#include "blockforest/BlockForest.h"
+
+#include <map>
+
+namespace walberla {
+namespace pe {
+
+typedef std::map<blockforest::BlockID, BlockInfo> InfoCollection;
+typedef std::pair<blockforest::BlockID, BlockInfo> InfoCollectionPair;
+
+void createWithNeighborhood(const BlockForest& bf, const BlockDataID storageID, InfoCollection& ic );
+
+}
+}