diff --git a/libsrc/core/mpi_wrapper.hpp b/libsrc/core/mpi_wrapper.hpp
index f26e66ec..b2e32731 100644
--- a/libsrc/core/mpi_wrapper.hpp
+++ b/libsrc/core/mpi_wrapper.hpp
@@ -134,6 +134,10 @@ namespace ngcore
     void Send (T & val, int dest, int tag) const {
       MPI_Send (&val, 1, GetMPIType<T>(), dest, tag, comm);
     }
+
+    void Send (const std::string & s, int dest, int tag) const {
+      MPI_Send( const_cast<char*> (&s[0]), s.length(), MPI_CHAR, dest, tag, comm);
+    }
     
     template<typename T, typename T2 = decltype(GetMPIType<T>())>
     void Send(FlatArray<T> s, int dest, int tag) const {
@@ -145,6 +149,17 @@ namespace ngcore
       MPI_Recv (&val, 1, GetMPIType<T>(), src, tag, comm, MPI_STATUS_IGNORE);
     }
 
+    void Recv (std::string & s, int src, int tag) const {    
+      MPI_Status status;
+      int len;
+      MPI_Probe (src, tag, comm, &status);
+      MPI_Get_count (&status, MPI_CHAR, &len);
+      // s.assign (len, ' ');
+      s.resize (len);
+      MPI_Recv( &s[0], len, MPI_CHAR, src, tag, comm, MPI_STATUS_IGNORE);
+    }
+    
+
     template <typename T, typename T2 = decltype(GetMPIType<T>())>
     void Recv (FlatArray <T> s, int src, int tag) const {
       MPI_Recv (s.Data(), s.Size(), GetMPIType<T> (), src, tag, comm, MPI_STATUS_IGNORE);
diff --git a/libsrc/general/mpi_interface.hpp b/libsrc/general/mpi_interface.hpp
index 08e7e85a..82f40720 100644
--- a/libsrc/general/mpi_interface.hpp
+++ b/libsrc/general/mpi_interface.hpp
@@ -59,11 +59,13 @@ namespace netgen
     MPI_Recv( &i, 1, MPI_INT, src, tag, comm, &status);
   }
 
+  [[deprecated("mympi_send string, use comm.Send instead")]]              
   inline void MyMPI_Send (const string & s, int dest, int tag, MPI_Comm comm)
   {
     MPI_Send( const_cast<char*> (s.c_str()), s.length(), MPI_CHAR, dest, tag, comm);
   }
 
+  [[deprecated("mympi_revc string, use comm.Recv instead")]]              
   inline void MyMPI_Recv (string & s, int src, int tag, MPI_Comm comm)
   {
     MPI_Status status;
@@ -76,14 +78,15 @@ namespace netgen
 
  
 
-
   template <class T, int BASE>
+  [[deprecated("mympi_send ngflatarray, use comm.send instead")]]              
   inline void MyMPI_Send (NgFlatArray<T, BASE> s, int dest, int tag, MPI_Comm comm)
   {
     MPI_Send( &s.First(), s.Size(), GetMPIType<T>(), dest, tag, comm);
   }
 
   template <class T, int BASE>
+  [[deprecated("mympi_recv ngflatarray, use comm.Recv instead")]]                
   inline void MyMPI_Recv ( NgFlatArray<T, BASE> s, int src, int tag, MPI_Comm comm)
   {
     MPI_Status status;
@@ -136,6 +139,7 @@ namespace netgen
   */
 
   template <class T, int BASE>
+  [[deprecated("mympi_isend ngflatarray, use comm.send instead")]]                
   inline MPI_Request MyMPI_ISend (NgFlatArray<T, BASE> s, int dest, int tag, MPI_Comm comm)
   {
     MPI_Request request;
@@ -143,8 +147,8 @@ namespace netgen
     return request;
   }
 
-
   template <class T, int BASE>
+  [[deprecated("mympi_irecv ngflatarray, use comm.recv instead")]]                
   inline MPI_Request MyMPI_IRecv (NgFlatArray<T, BASE> s, int dest, int tag, MPI_Comm comm)
   {
     MPI_Request request;
@@ -243,12 +247,14 @@ namespace netgen
   }
 
   template <class T, class T2>
+  [[deprecated("mympi_allgather deprecated, use comm.allgather")]]                    
   inline void MyMPI_Allgather (const T & send, NgFlatArray<T2> recv, MPI_Comm comm)
   {
     MPI_Allgather( const_cast<T*> (&send), 1, GetMPIType<T>(), &recv[0], 1, GetMPIType<T2>(), comm);
   }
 
   template <class T, class T2>
+  [[deprecated("mympi_alltoall deprecated, use comm.alltoall")]]                  
   inline void MyMPI_Alltoall (NgFlatArray<T> send, NgFlatArray<T2> recv, MPI_Comm comm)
   {
     MPI_Alltoall( &send[0], 1, GetMPIType<T>(), &recv[0], 1, GetMPIType<T2>(), comm);
diff --git a/libsrc/meshing/parallelmesh.cpp b/libsrc/meshing/parallelmesh.cpp
index 7e7b7523..9af0d7a6 100644
--- a/libsrc/meshing/parallelmesh.cpp
+++ b/libsrc/meshing/parallelmesh.cpp
@@ -321,7 +321,8 @@ namespace netgen
     for (int dest = 1; dest < ntasks; dest++)
       {
 	NgFlatArray<PointIndex> verts = verts_of_proc[dest];
-	sendrequests.Append (MyMPI_ISend (verts, dest, MPI_TAG_MESH+1, comm));
+	// sendrequests.Append (MyMPI_ISend (verts, dest, MPI_TAG_MESH+1, comm));
+        sendrequests.Append (comm.ISend (FlatArray<PointIndex>(verts), dest, MPI_TAG_MESH+1));
 
 	MPI_Datatype mptype = MeshPoint::MyGetMPIType();
 
@@ -399,7 +400,8 @@ namespace netgen
       }
     Array<MPI_Request> req_per;
     for(int dest = 1; dest < ntasks; dest++)
-      req_per.Append(MyMPI_ISend(pp_data[dest], dest, MPI_TAG_MESH+1, comm));
+      // req_per.Append(MyMPI_ISend(pp_data[dest], dest, MPI_TAG_MESH+1, comm));
+      req_per.Append(comm.ISend(FlatArray<int>(pp_data[dest]), dest, MPI_TAG_MESH+1));
     MyMPI_WaitAll(req_per);
 
     PrintMessage ( 3, "Sending Vertices - distprocs");
diff --git a/libsrc/meshing/paralleltop.cpp b/libsrc/meshing/paralleltop.cpp
index 06c08ab5..3fba9f87 100644
--- a/libsrc/meshing/paralleltop.cpp
+++ b/libsrc/meshing/paralleltop.cpp
@@ -122,7 +122,7 @@ namespace netgen
     *testout << "ParallelMeshTopology :: UpdateCoarseGridGlobal" << endl;
 
     const MeshTopology & topology = mesh.GetTopology();
-    MPI_Comm comm = mesh.GetCommunicator();
+    auto comm = mesh.GetCommunicator();
     
     if ( id == 0 )
       {
@@ -160,7 +160,8 @@ namespace netgen
 
 	Array<MPI_Request> sendrequests;
 	for (int dest = 1; dest < ntasks; dest++)
-	  sendrequests.Append (MyMPI_ISend (*sendarrays[dest], dest, MPI_TAG_MESH+10, comm));
+	  // sendrequests.Append (MyMPI_ISend (*sendarrays[dest], dest, MPI_TAG_MESH+10, comm));
+          sendrequests.Append (comm.ISend (FlatArray<int>(*sendarrays[dest]), dest, MPI_TAG_MESH+10));
 	MyMPI_WaitAll (sendrequests);
 
 	for (int dest = 1; dest < ntasks; dest++)