diff --git a/lib/communicator/Communicator_base.cc b/lib/communicator/Communicator_base.cc
index 836bc01e..bcf429ab 100644
--- a/lib/communicator/Communicator_base.cc
+++ b/lib/communicator/Communicator_base.cc
@@ -96,6 +96,105 @@ void CartesianCommunicator::GlobalSumVector(ComplexD *c,int N)
   GlobalSumVector((double *)c,2*N);
 }
 
+
+#if defined( GRID_COMMS_MPI) || defined (GRID_COMMS_MPIT)
+
+CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors,const CartesianCommunicator &parent) 
+{
+  _ndimension = processors.size();
+  assert(_ndimension = parent._ndimension);
+  
+  //////////////////////////////////////////////////////////////////////////////////////////////////////
+  // split the communicator
+  //////////////////////////////////////////////////////////////////////////////////////////////////////
+  int Nparent;
+  MPI_Comm_size(parent.communicator,&Nparent);
+
+  int childsize=1;
+  for(int d=0;d<processors.size();d++) {
+    childsize *= processors[d];
+  }
+  int Nchild = Nparent/childsize;
+  assert (childsize * Nchild == Nparent);
+
+  int prank;  MPI_Comm_rank(parent.communicator,&prank);
+  int crank = prank % childsize;
+  int ccomm = prank / childsize;
+
+  MPI_Comm comm_split;
+  if ( Nchild > 1 ) { 
+
+    std::cout << GridLogMessage<<"Child communicator of "<< std::hex << parent.communicator << std::dec<<std::endl;
+    std::cout << GridLogMessage<<" parent grid["<< parent._ndimension<<"]    ";
+    for(int d=0;d<parent._processors.size();d++)  std::cout << parent._processors[d] << " ";
+    std::cout<<std::endl;
+
+    std::cout << GridLogMessage<<" child grid["<< _ndimension <<"]    ";
+    for(int d=0;d<processors.size();d++)  std::cout << processors[d] << " ";
+    std::cout<<std::endl;
+
+    int ierr= MPI_Comm_split(parent.communicator, ccomm,crank,&comm_split);
+    assert(ierr==0);
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    // Declare victory
+    //////////////////////////////////////////////////////////////////////////////////////////////////////
+    std::cout << GridLogMessage<<"Divided communicator "<< parent._Nprocessors<<" into "
+	      <<Nchild <<" communicators with " << childsize << " ranks"<<std::endl;
+  } else {
+    comm_split=parent.communicator;
+    //    std::cout << "Passed parental communicator to a new communicator" <<std::endl;
+  }
+
+  //////////////////////////////////////////////////////////////////////////////////////////////////////
+  // Set up from the new split communicator
+  //////////////////////////////////////////////////////////////////////////////////////////////////////
+  InitFromMPICommunicator(processors,comm_split);
+}
+//////////////////////////////////////////////////////////////////////////////////////////////////////
+// Take an MPI_Comm and self assemble
+//////////////////////////////////////////////////////////////////////////////////////////////////////
+void CartesianCommunicator::InitFromMPICommunicator(const std::vector<int> &processors, MPI_Comm communicator_base)
+{
+  //  if ( communicator_base != communicator_world ) {
+  //    std::cout << "Cartesian communicator created with a non-world communicator"<<std::endl;
+  //  }
+  _ndimension = processors.size();
+  _processor_coor.resize(_ndimension);
+
+  /////////////////////////////////
+  // Count the requested nodes
+  /////////////////////////////////
+  _Nprocessors=1;
+  _processors = processors;
+  for(int i=0;i<_ndimension;i++){
+    _Nprocessors*=_processors[i];
+  }
+
+  std::vector<int> periodic(_ndimension,1);
+  MPI_Cart_create(communicator_base, _ndimension,&_processors[0],&periodic[0],1,&communicator);
+  MPI_Comm_rank(communicator,&_processor);
+  MPI_Cart_coords(communicator,_processor,_ndimension,&_processor_coor[0]);
+
+  int Size;
+  MPI_Comm_size(communicator,&Size);
+
+#ifdef GRID_COMMS_MPIT
+  communicator_halo.resize (2*_ndimension);
+  for(int i=0;i<_ndimension*2;i++){
+    MPI_Comm_dup(communicator,&communicator_halo[i]);
+  }
+#endif
+  
+  assert(Size==_Nprocessors);
+}
+
+CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors) 
+{
+  InitFromMPICommunicator(processors,communicator_world);
+}
+
+#endif
+
 #if !defined( GRID_COMMS_MPI3) 
 
 int                      CartesianCommunicator::NodeCount(void)    { return ProcessorCount();};
diff --git a/lib/communicator/Communicator_base.h b/lib/communicator/Communicator_base.h
index e8791cd8..bfdb0da1 100644
--- a/lib/communicator/Communicator_base.h
+++ b/lib/communicator/Communicator_base.h
@@ -157,8 +157,7 @@ class CartesianCommunicator {
   CartesianCommunicator(const std::vector<int> &pdimensions_in);
 
  private:
-#if defined (GRID_COMMS_MPI) 
-  //|| defined (GRID_COMMS_MPI3) 
+#if defined (GRID_COMMS_MPI) || defined (GRID_COMMS_MPIT) 
   ////////////////////////////////////////////////
   // Private initialise from an MPI communicator
   // Can use after an MPI_Comm_split, but hidden from user so private
diff --git a/lib/communicator/Communicator_mpi.cc b/lib/communicator/Communicator_mpi.cc
index 1a7a0c05..a55c0164 100644
--- a/lib/communicator/Communicator_mpi.cc
+++ b/lib/communicator/Communicator_mpi.cc
@@ -52,95 +52,6 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
   MPI_Comm_dup (MPI_COMM_WORLD,&communicator_world);
   ShmInitGeneric();
 }
-
-CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors) 
-{
-  InitFromMPICommunicator(processors,communicator_world);
-  //  std::cout << "Passed communicator world to a new communicator" <<communicator<<std::endl;
-}
-CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors,const CartesianCommunicator &parent) 
-{
-  _ndimension = processors.size();
-  assert(_ndimension = parent._ndimension);
-  
-  //////////////////////////////////////////////////////////////////////////////////////////////////////
-  // split the communicator
-  //////////////////////////////////////////////////////////////////////////////////////////////////////
-  int Nparent;
-  MPI_Comm_size(parent.communicator,&Nparent);
-
-  int childsize=1;
-  for(int d=0;d<processors.size();d++) {
-    childsize *= processors[d];
-  }
-  int Nchild = Nparent/childsize;
-  assert (childsize * Nchild == Nparent);
-
-  int prank;  MPI_Comm_rank(parent.communicator,&prank);
-  int crank = prank % childsize;
-  int ccomm = prank / childsize;
-
-  MPI_Comm comm_split;
-  if ( Nchild > 1 ) { 
-
-    std::cout << GridLogMessage<<"Child communicator of "<< std::hex << parent.communicator << std::dec<<std::endl;
-    std::cout << GridLogMessage<<" parent grid["<< parent._ndimension<<"]    ";
-    for(int d=0;d<parent._processors.size();d++)  std::cout << parent._processors[d] << " ";
-    std::cout<<std::endl;
-
-    std::cout << GridLogMessage<<" child grid["<< _ndimension <<"]    ";
-    for(int d=0;d<processors.size();d++)  std::cout << processors[d] << " ";
-    std::cout<<std::endl;
-
-    int ierr= MPI_Comm_split(parent.communicator, ccomm,crank,&comm_split);
-    assert(ierr==0);
-    //////////////////////////////////////////////////////////////////////////////////////////////////////
-    // Declare victory
-    //////////////////////////////////////////////////////////////////////////////////////////////////////
-    std::cout << GridLogMessage<<"Divided communicator "<< parent._Nprocessors<<" into "
-	      <<Nchild <<" communicators with " << childsize << " ranks"<<std::endl;
-  } else {
-    comm_split=parent.communicator;
-    //    std::cout << "Passed parental communicator to a new communicator" <<std::endl;
-  }
-
-  //////////////////////////////////////////////////////////////////////////////////////////////////////
-  // Set up from the new split communicator
-  //////////////////////////////////////////////////////////////////////////////////////////////////////
-  InitFromMPICommunicator(processors,comm_split);
-
-}
-
-//////////////////////////////////////////////////////////////////////////////////////////////////////
-// Take an MPI_Comm and self assemble
-//////////////////////////////////////////////////////////////////////////////////////////////////////
-void CartesianCommunicator::InitFromMPICommunicator(const std::vector<int> &processors, MPI_Comm communicator_base)
-{
-  //  if ( communicator_base != communicator_world ) {
-  //    std::cout << "Cartesian communicator created with a non-world communicator"<<std::endl;
-  //  }
-  _ndimension = processors.size();
-  _processor_coor.resize(_ndimension);
-
-  /////////////////////////////////
-  // Count the requested nodes
-  /////////////////////////////////
-  _Nprocessors=1;
-  _processors = processors;
-  for(int i=0;i<_ndimension;i++){
-    _Nprocessors*=_processors[i];
-  }
-
-  std::vector<int> periodic(_ndimension,1);
-  MPI_Cart_create(communicator_base, _ndimension,&_processors[0],&periodic[0],1,&communicator);
-  MPI_Comm_rank(communicator,&_processor);
-  MPI_Cart_coords(communicator,_processor,_ndimension,&_processor_coor[0]);
-
-  int Size;
-  MPI_Comm_size(communicator,&Size);
-  
-  assert(Size==_Nprocessors);
-}
 void CartesianCommunicator::GlobalSum(uint32_t &u){
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_SUM,communicator);
   assert(ierr==0);
diff --git a/lib/communicator/Communicator_mpit.cc b/lib/communicator/Communicator_mpit.cc
index eb6ef87d..5137c27b 100644
--- a/lib/communicator/Communicator_mpit.cc
+++ b/lib/communicator/Communicator_mpit.cc
@@ -53,33 +53,6 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
   ShmInitGeneric();
 }
 
-CartesianCommunicator::CartesianCommunicator(const std::vector<int> &processors)
-{
-  _ndimension = processors.size();
-  std::vector<int> periodic(_ndimension,1);
-
-  _Nprocessors=1;
-  _processors = processors;
-  _processor_coor.resize(_ndimension);
-  
-  MPI_Cart_create(communicator_world, _ndimension,&_processors[0],&periodic[0],1,&communicator);
-  MPI_Comm_rank(communicator,&_processor);
-  MPI_Cart_coords(communicator,_processor,_ndimension,&_processor_coor[0]);
-
-  for(int i=0;i<_ndimension;i++){
-    _Nprocessors*=_processors[i];
-  }
-
-  communicator_halo.resize (2*_ndimension);
-  for(int i=0;i<_ndimension*2;i++){
-    MPI_Comm_dup(communicator,&communicator_halo[i]);
-  }
-  
-  int Size; 
-  MPI_Comm_size(communicator,&Size);
-  
-  assert(Size==_Nprocessors);
-}
 void CartesianCommunicator::GlobalSum(uint32_t &u){
   int ierr=MPI_Allreduce(MPI_IN_PLACE,&u,1,MPI_UINT32_T,MPI_SUM,communicator);
   assert(ierr==0);
diff --git a/lib/qcd/action/fermion/CayleyFermion5D.cc b/lib/qcd/action/fermion/CayleyFermion5D.cc
index 838b1c3d..eace6484 100644
--- a/lib/qcd/action/fermion/CayleyFermion5D.cc
+++ b/lib/qcd/action/fermion/CayleyFermion5D.cc
@@ -77,7 +77,6 @@ void CayleyFermion5D<Impl>::DminusDag(const FermionField &psi, FermionField &chi
   }
 }
 
-
 template<class Impl> void CayleyFermion5D<Impl>::CayleyReport(void)
 {
   this->Report();
@@ -119,7 +118,6 @@ template<class Impl> void CayleyFermion5D<Impl>::CayleyZeroCounters(void)
   MooeeInvTime=0;
 }
 
-
 template<class Impl>  
 void CayleyFermion5D<Impl>::M5D   (const FermionField &psi, FermionField &chi)
 {