diff --git a/tests/IO/Test_ildg_read.cc b/tests/IO/Test_ildg_read.cc
new file mode 100644
index 00000000..70a46dbf
--- /dev/null
+++ b/tests/IO/Test_ildg_read.cc
@@ -0,0 +1,112 @@
+    /*************************************************************************************
+
+    Grid physics library, www.github.com/paboyle/Grid 
+
+    Source file: ./tests/Test_nersc_io.cc
+
+    Copyright (C) 2015
+
+Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
+Author: Peter Boyle <paboyle@ph.ed.ac.uk>
+Author: paboyle <paboyle@ph.ed.ac.uk>
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+    See the full license in the file "LICENSE" in the top level distribution directory
+    *************************************************************************************/
+    /*  END LEGAL */
+#include <Grid/Grid.h>
+
+using namespace std;
+using namespace Grid;
+using namespace Grid::QCD;
+
+
+int main (int argc, char ** argv)
+{
+  Grid_init(&argc,&argv);
+
+
+  std::vector<int> simd_layout = GridDefaultSimd(4,vComplex::Nsimd());
+  std::vector<int> mpi_layout  = GridDefaultMpi();
+  std::vector<int> latt_size = GridDefaultLatt();
+  int orthodir=3;
+  int orthosz =latt_size[orthodir];
+    
+  GridCartesian     Fine(latt_size,simd_layout,mpi_layout);
+
+  LatticeGaugeField Umu(&Fine);
+  std::vector<LatticeColourMatrix> U(4,&Fine);
+  
+  FieldMetaData header;
+  std::string file("./ckpoint_lat");
+  IldgIO::readConfiguration(file,Umu,header);
+
+  for(int mu=0;mu<Nd;mu++){
+    U[mu] = PeekIndex<LorentzIndex>(Umu,mu);
+  }
+
+  // Painful ; fix syntactical niceness
+  LatticeComplex LinkTrace(&Fine);
+  LinkTrace=zero;
+  for(int mu=0;mu<Nd;mu++){
+    LinkTrace = LinkTrace + trace(U[mu]);
+  }
+
+  // (1+2+3)=6 = N(N-1)/2 terms
+  LatticeComplex Plaq(&Fine);
+
+  Plaq = zero;
+
+  for(int mu=1;mu<Nd;mu++){
+    for(int nu=0;nu<mu;nu++){
+      Plaq = Plaq + trace(U[mu]*Cshift(U[nu],mu,1)*adj(Cshift(U[mu],nu,1))*adj(U[nu]));
+    }
+  }
+
+  double vol = Fine.gSites();
+  Complex PlaqScale(1.0/vol/6.0/3.0);
+  std::cout<<GridLogMessage <<"PlaqScale" << PlaqScale<<std::endl;
+
+  std::vector<TComplex> Plaq_T(orthosz);
+  sliceSum(Plaq,Plaq_T,Nd-1);
+  int Nt = Plaq_T.size();
+
+  TComplex Plaq_T_sum; 
+  Plaq_T_sum=zero;
+  for(int t=0;t<Nt;t++){
+    Plaq_T_sum = Plaq_T_sum+Plaq_T[t];
+    Complex Pt=TensorRemove(Plaq_T[t]);
+    std::cout<<GridLogMessage << "sliced ["<<t<<"]" <<Pt*PlaqScale*Real(Nt)<<std::endl;
+  }
+
+  {
+    Complex Pt = TensorRemove(Plaq_T_sum);
+    std::cout<<GridLogMessage << "total " <<Pt*PlaqScale<<std::endl;
+  }  
+
+
+  TComplex Tp = sum(Plaq);
+  Complex p  = TensorRemove(Tp);
+  std::cout<<GridLogMessage << "calculated plaquettes " <<p*PlaqScale<<std::endl;
+
+
+  Complex LinkTraceScale(1.0/vol/4.0/3.0);
+  TComplex Tl = sum(LinkTrace);
+  Complex l  = TensorRemove(Tl);
+  std::cout<<GridLogMessage << "calculated link trace " <<l*LinkTraceScale<<std::endl;
+
+  Grid_finalize();
+}