Index: branches/MPI/HeuristicLab.Operators.MPISupport/3.3/HeuristicLab.Operators.MPISupport-3.3.csproj
===================================================================
--- branches/MPI/HeuristicLab.Operators.MPISupport/3.3/HeuristicLab.Operators.MPISupport-3.3.csproj	(revision 6346)
+++ branches/MPI/HeuristicLab.Operators.MPISupport/3.3/HeuristicLab.Operators.MPISupport-3.3.csproj	(revision 6347)
@@ -114,4 +114,6 @@
     <None Include="HeuristicLabOperatorsMPISupportPlugin.cs.frame" />
     <Compile Include="HeuristicLabOperatorsMPISupportPlugin.cs" />
+    <Compile Include="MPITransportWrapper.cs" />
+    <Compile Include="MPIUnidirectionalRingMigrator.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
@@ -121,4 +123,24 @@
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\..\HeuristicLab.Collections\3.3\HeuristicLab.Collections-3.3.csproj">
+      <Project>{958B43BC-CC5C-4FA2-8628-2B3B01D890B6}</Project>
+      <Name>HeuristicLab.Collections-3.3</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\HeuristicLab.Common\3.3\HeuristicLab.Common-3.3.csproj">
+      <Project>{A9AD58B9-3EF9-4CC1-97E5-8D909039FF5C}</Project>
+      <Name>HeuristicLab.Common-3.3</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\HeuristicLab.Core\3.3\HeuristicLab.Core-3.3.csproj">
+      <Project>{C36BD924-A541-4A00-AFA8-41701378DDC5}</Project>
+      <Name>HeuristicLab.Core-3.3</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\HeuristicLab.Operators\3.3\HeuristicLab.Operators-3.3.csproj">
+      <Project>{23DA7FF4-D5B8-41B6-AA96-F0561D24F3EE}</Project>
+      <Name>HeuristicLab.Operators-3.3</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\HeuristicLab.Optimization\3.3\HeuristicLab.Optimization-3.3.csproj">
+      <Project>{14AB8D24-25BC-400C-A846-4627AA945192}</Project>
+      <Name>HeuristicLab.Optimization-3.3</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\HeuristicLab.Persistence\3.3\HeuristicLab.Persistence-3.3.csproj">
       <Project>{102BC7D3-0EF9-439C-8F6D-96FF0FDB8E1B}</Project>
Index: branches/MPI/HeuristicLab.Operators.MPISupport/3.3/HeuristicLabOperatorsMPISupportPlugin.cs.frame
===================================================================
--- branches/MPI/HeuristicLab.Operators.MPISupport/3.3/HeuristicLabOperatorsMPISupportPlugin.cs.frame	(revision 6346)
+++ branches/MPI/HeuristicLab.Operators.MPISupport/3.3/HeuristicLabOperatorsMPISupportPlugin.cs.frame	(revision 6347)
@@ -29,5 +29,10 @@
   [PluginFile("HeuristicLab.Operators.MPISupport-3.3.dll", PluginFileType.Assembly)]
   [PluginDependency("HeuristicLab.MPInet", "1.0.0")]
+  [PluginDependency("HeuristicLab.Core", "3.3")]
+  [PluginDependency("HeuristicLab.Common", "3.3")]
   [PluginDependency("HeuristicLab.Persistence", "3.3")]
+  [PluginDependency("HeuristicLab.Operators", "3.3")]
+  [PluginDependency("HeuristicLab.Collections", "3.3")]
+  [PluginDependency("HeuristicLab.Optimization", "3.3")]
   public class HeuristicLabOperatorsMPISupportPlugin : PluginBase {
   }
Index: branches/MPI/HeuristicLab.Operators.MPISupport/3.3/MPITransportWrapper.cs
===================================================================
--- branches/MPI/HeuristicLab.Operators.MPISupport/3.3/MPITransportWrapper.cs	(revision 6347)
+++ branches/MPI/HeuristicLab.Operators.MPISupport/3.3/MPITransportWrapper.cs	(revision 6347)
@@ -0,0 +1,75 @@
+﻿#region License Information
+/* HeuristicLab
+ * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab 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.
+ *
+ * HeuristicLab 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 HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Runtime.Serialization;
+using HeuristicLab.Core;
+using System.IO;
+using HeuristicLab.Persistence.Default.Xml;
+
+namespace HeuristicLab.Operators.MPISupport {
+  /// <summary>
+  /// A simple wrapper to transport items over the message passing interface
+  /// </summary>
+  [Serializable]
+  class MPITransportWrapper<T>: ISerializable where T: class, IItem {
+    [NonSerialized]
+    private T innerItem;
+
+    public T InnerItem {
+      get {
+        return innerItem;
+      }
+    }
+
+    public MPITransportWrapper(T item) {
+      innerItem = item;
+    }
+
+    protected MPITransportWrapper(SerializationInfo info, StreamingContext context) {
+      MemoryStream stream = new MemoryStream(info.GetValue("Item", typeof(byte[])) as byte[]);
+      if (stream != null)
+        innerItem = XmlParser.Deserialize(stream) as T;
+      else
+        innerItem = null;
+    }
+
+    #region ISerializable Members
+
+    public void GetObjectData(SerializationInfo info, StreamingContext context) {
+      object value = null;
+
+      if (innerItem != null) {
+        MemoryStream stream = new MemoryStream();
+        XmlGenerator.Serialize(innerItem, stream);
+
+        value = stream.GetBuffer();
+      } 
+        
+      info.AddValue("Item", value);     
+    }
+
+    #endregion
+  }
+}
Index: branches/MPI/HeuristicLab.Operators.MPISupport/3.3/MPIUnidirectionalRingMigrator.cs
===================================================================
--- branches/MPI/HeuristicLab.Operators.MPISupport/3.3/MPIUnidirectionalRingMigrator.cs	(revision 6347)
+++ branches/MPI/HeuristicLab.Operators.MPISupport/3.3/MPIUnidirectionalRingMigrator.cs	(revision 6347)
@@ -0,0 +1,75 @@
+﻿#region License Information
+/* HeuristicLab
+ * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab 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.
+ *
+ * HeuristicLab 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 HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using HeuristicLab.Core;
+using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
+using HeuristicLab.Common;
+using HeuristicLab.Optimization;
+
+namespace HeuristicLab.Operators.MPISupport {
+  [Item("MPIUnidirectionalRingMigrator", "A unidirectional ring migrator that utilizes MPI if available.")]
+  [StorableClass]
+  public class MPIUnidirectionalRingMigrator : SingleSuccessorOperator {
+    [StorableConstructor]
+    private MPIUnidirectionalRingMigrator(bool deserializing) : base(deserializing) { }
+    private MPIUnidirectionalRingMigrator(MPIUnidirectionalRingMigrator original, Cloner cloner) : base(original, cloner) { }
+    public override IDeepCloneable Clone(Cloner cloner) {
+      return new MPIUnidirectionalRingMigrator(this, cloner);
+    }
+    public MPIUnidirectionalRingMigrator()
+      : base() {
+    }
+
+    public override IOperation Apply() {
+      if (MPI.Communicator.world != null) {
+        int size = MPI.Communicator.world.Group.Size;
+        if (size > 1) {
+          int i = MPI.Communicator.world.Rank;
+          IScope scope = ExecutionContext.Scope;
+
+          IScope emigrants = scope.SubScopes[1];
+          scope.SubScopes.Remove(emigrants);
+          int recipent = (i + 1) % size;
+
+          Console.WriteLine("MIGRATE " + i + " TO " + recipent);
+          MPI.Communicator.world.Send<MPITransportWrapper<IScope>>(
+            new MPITransportWrapper<IScope>(emigrants), recipent, 0);
+
+          IScope immigrants = null;
+          int sender = i - 1;
+          if (sender < 0)
+            sender = size - 1;
+
+          Console.WriteLine("MIGRATE " + i + " FROM " + sender);
+          immigrants = MPI.Communicator.world.Receive<MPITransportWrapper<IScope>>(sender, 0).InnerItem;
+
+          scope.SubScopes.Add(immigrants);
+        }
+      }
+
+      return base.Apply();
+    }
+  }
+}
