diff --git a/libsrc/core/mpi_wrapper.hpp b/libsrc/core/mpi_wrapper.hpp
index e8461bb9..058dca70 100644
--- a/libsrc/core/mpi_wrapper.hpp
+++ b/libsrc/core/mpi_wrapper.hpp
@@ -286,25 +286,25 @@ namespace ngcore
     }
 
     /** --- non-blocking P2P --- **/
-    
+
     template<typename T, typename T2 = decltype(GetMPIType<T>())> 
-    NG_MPI_Request ISend (T & val, int dest, int tag) const
+    [[nodiscard]] NG_MPI_Request ISend (T & val, int dest, int tag) const
     {
       NG_MPI_Request request;
       NG_MPI_Isend (&val, 1, GetMPIType<T>(), dest, tag, comm, &request);
       return request;
     }
-
+    
     template<typename T, typename T2 = decltype(GetMPIType<T>())>
-    NG_MPI_Request ISend (FlatArray<T> s, int dest, int tag) const
+    [[nodiscard]] NG_MPI_Request ISend (FlatArray<T> s, int dest, int tag) const
     {
       NG_MPI_Request request;
       NG_MPI_Isend (s.Data(), s.Size(), GetMPIType<T>(), dest, tag, comm, &request);
       return request;
     }
-
+    
     template<typename T, typename T2 = decltype(GetMPIType<T>())> 
-    NG_MPI_Request IRecv (T & val, int dest, int tag) const
+    [[nodiscard]] NG_MPI_Request IRecv (T & val, int dest, int tag) const
     {
       NG_MPI_Request request;
       NG_MPI_Irecv (&val, 1, GetMPIType<T>(), dest, tag, comm, &request);
@@ -312,7 +312,7 @@ namespace ngcore
     }
     
     template<typename T, typename T2 = decltype(GetMPIType<T>())>
-    NG_MPI_Request IRecv (FlatArray<T> s, int src, int tag) const
+    [[nodiscard]] NG_MPI_Request IRecv (FlatArray<T> s, int src, int tag) const
     { 
       NG_MPI_Request request;
       NG_MPI_Irecv (s.Data(), s.Size(), GetMPIType<T>(), src, tag, comm, &request);
@@ -393,8 +393,9 @@ namespace ngcore
     }
 
 
+    
     template <class T, size_t S>
-    NgMPI_Request IBcast (std::array<T,S> & d, int root = 0) const
+    [[nodiscard]] NgMPI_Request IBcast (std::array<T,S> & d, int root = 0) const
     {
       NG_MPI_Request request;      
       NG_MPI_Ibcast (&d[0], S, GetMPIType<T>(), root, comm, &request);
@@ -535,7 +536,12 @@ namespace ngcore
   template <class T, class T2=void>
   inline NG_MPI_Datatype GetMPIType () { return -1; }
 
-  class NgMPI_Request { };
+  class NgMPI_Request {
+  public:
+    NgMPI_Request() = default;
+    NgMPI_Request(NgMPI_Request &&) { ; }    
+    NgMPI_Request(NG_MPI_Request &&) { ; }
+  };
   class NgMPI_Requests
   {
   public:
diff --git a/libsrc/meshing/parallelmesh.cpp b/libsrc/meshing/parallelmesh.cpp
index a1e388b7..9fad0603 100644
--- a/libsrc/meshing/parallelmesh.cpp
+++ b/libsrc/meshing/parallelmesh.cpp
@@ -1220,7 +1220,8 @@ namespace netgen
     recvrequests[0] = comm.IBcast (nnames);
     MyMPI_WaitAll (recvrequests);
     */
-    comm.IBcast (nnames);  
+    NgMPI_Requests requ;
+    requ += comm.IBcast (nnames);
     
     // cout << "nnames = " << FlatArray(nnames) << endl;
     materials.SetSize(nnames[0]);
@@ -1235,7 +1236,7 @@ namespace netgen
     recvrequests[0] = comm.IBcast (name_sizes);
     MyMPI_WaitAll (recvrequests);
     */
-    comm.IBcast (name_sizes);  
+    requ += comm.IBcast (name_sizes);
     
     int tot_size = 0;
     for (int k = 0; k < tot_nn; k++) tot_size += name_sizes[k];
@@ -1245,7 +1246,8 @@ namespace netgen
     Array<char> compiled_names(tot_size);
     // recvrequests[0] = comm.IBcast (compiled_names);
     // MyMPI_WaitAll (recvrequests);
-    comm.IBcast (compiled_names);    
+    requ += comm.IBcast (compiled_names); 
+    requ.WaitAll();
     
     tot_nn = tot_size = 0;
     auto write_names = [&] (auto & array) {