diff --git a/FDTD/operator_mpi.cpp b/FDTD/operator_mpi.cpp
index d091caa..e5b80ef 100644
--- a/FDTD/operator_mpi.cpp
+++ b/FDTD/operator_mpi.cpp
@@ -175,3 +175,28 @@ void Operator_MPI::Reset()
 	Delete();
 	Operator_SSE_Compressed::Reset();
 }
+
+string Operator_MPI::PrependRank(string name)
+{
+	stringstream out_name;
+	if (m_MPI_Enabled)
+		out_name << "ID" << m_MyID << "_" << name;
+	else
+		out_name << name;
+	return out_name.str();
+}
+
+void Operator_MPI::DumpOperator2File(string filename)
+{
+	Operator_SSE_Compressed::DumpOperator2File(PrependRank(filename));
+}
+
+void Operator_MPI::DumpMaterial2File(string filename)
+{
+	Operator_SSE_Compressed::DumpMaterial2File(PrependRank(filename));
+}
+
+void Operator_MPI::DumpPEC2File( string filename )
+{
+	Operator_SSE_Compressed::DumpPEC2File(PrependRank(filename));
+}
diff --git a/FDTD/operator_mpi.h b/FDTD/operator_mpi.h
index 902507b..81f940c 100644
--- a/FDTD/operator_mpi.h
+++ b/FDTD/operator_mpi.h
@@ -54,6 +54,12 @@ protected:
 	//the up and down neighbors, -1 if non for the given direction
 	int m_NeighborUp[3];
 	int m_NeighborDown[3];
+
+	string PrependRank(string name);
+
+	virtual void DumpOperator2File(string filename);
+	virtual void DumpMaterial2File(string filename);
+	virtual void DumpPEC2File( string filename );
 };
 
 #endif // OPERATOR_MPI_H