diff --git a/benchmarks/Benchmark_comms.cc b/benchmarks/Benchmark_comms.cc
index b8abcc87..6140644f 100644
--- a/benchmarks/Benchmark_comms.cc
+++ b/benchmarks/Benchmark_comms.cc
@@ -334,7 +334,7 @@ int main (int argc, char ** argv)
 
       dbytes=dbytes*ppn;
       double xbytes    = dbytes*0.5;
-      double rbytes    = dbytes*0.5;
+      //      double rbytes    = dbytes*0.5;
       double bidibytes = dbytes;
 
       std::cout<<GridLogMessage << std::setw(4) << lat<<"\t"<<Ls<<"\t"
@@ -431,7 +431,7 @@ int main (int argc, char ** argv)
 
       dbytes=dbytes*ppn;
       double xbytes    = dbytes*0.5;
-      double rbytes    = dbytes*0.5;
+      //      double rbytes    = dbytes*0.5;
       double bidibytes = dbytes;
 
 
@@ -519,7 +519,7 @@ int main (int argc, char ** argv)
 
       dbytes=dbytes*ppn;
       double xbytes    = dbytes*0.5;
-      double rbytes    = dbytes*0.5;
+      //      double rbytes    = dbytes*0.5;
       double bidibytes = dbytes;
 
 
diff --git a/benchmarks/Benchmark_dwf_sweep.cc b/benchmarks/Benchmark_dwf_sweep.cc
index e1eab85a..d574828a 100644
--- a/benchmarks/Benchmark_dwf_sweep.cc
+++ b/benchmarks/Benchmark_dwf_sweep.cc
@@ -278,7 +278,7 @@ void benchsDw(std::vector<int> & latt4, int Ls, int threads, int report )
     }
   }
 
-  RealD mass=0.1;
+  //  RealD mass=0.1;
   RealD M5  =1.8;
 
   typedef WilsonFermion5D<DomainWallVec5dImplR> WilsonFermion5DR;
diff --git a/benchmarks/Benchmark_memory_bandwidth.cc b/benchmarks/Benchmark_memory_bandwidth.cc
index 61ce2300..0654ed41 100644
--- a/benchmarks/Benchmark_memory_bandwidth.cc
+++ b/benchmarks/Benchmark_memory_bandwidth.cc
@@ -177,7 +177,7 @@ int main (int argc, char ** argv)
       LatticeVec z(&Grid);// random(pRNG,z);
       LatticeVec x(&Grid);// random(pRNG,x);
       LatticeVec y(&Grid);// random(pRNG,y);
-      RealD a=2.0;
+      //      RealD a=2.0;
       Real nn;      
       double start=usecond();
       for(int i=0;i<Nloop;i++){
diff --git a/benchmarks/Benchmark_mooee.cc b/benchmarks/Benchmark_mooee.cc
index 037e6dc6..ef5eba8f 100644
--- a/benchmarks/Benchmark_mooee.cc
+++ b/benchmarks/Benchmark_mooee.cc
@@ -65,7 +65,7 @@ int main (int argc, char ** argv)
 
   RealD mass=0.1;
   RealD M5  =1.8;
-  RealD NP = UGrid->_Nprocessors;
+  //  RealD NP = UGrid->_Nprocessors;
 
 
   if (1)
diff --git a/extras/Hadrons/VirtualMachine.cc b/extras/Hadrons/VirtualMachine.cc
index 30de8a43..87645eed 100644
--- a/extras/Hadrons/VirtualMachine.cc
+++ b/extras/Hadrons/VirtualMachine.cc
@@ -516,7 +516,7 @@ VirtualMachine::Program VirtualMachine::schedule(const GeneticPar &par)
     LOG(Message) << "  max. cst. generation= " << par.maxCstGen << std::endl;
     LOG(Message) << "         mutation rate= " << par.mutationRate << std::endl;
     
-    unsigned int          k = 0, gen, prevPeak, nCstPeak = 0;
+    unsigned int          gen, prevPeak, nCstPeak = 0;
     std::random_device    rd;
     Scheduler::Parameters gpar;
     
diff --git a/lib/parallelIO/NerscIO.h b/lib/parallelIO/NerscIO.h
index c2370223..a329f176 100644
--- a/lib/parallelIO/NerscIO.h
+++ b/lib/parallelIO/NerscIO.h
@@ -137,7 +137,7 @@ public:
     typedef Lattice<iLorentzColourMatrix<vsimd> > GaugeField;
 
     GridBase *grid = Umu._grid;
-    int offset = readHeader(file,Umu._grid,header);
+    int offset = readHeader(file,grid,header);
 
     FieldMetaData clone(header);
 
diff --git a/lib/tensors/Tensor_inner.h b/lib/tensors/Tensor_inner.h
index 49e7cdd5..4d8b02e1 100644
--- a/lib/tensors/Tensor_inner.h
+++ b/lib/tensors/Tensor_inner.h
@@ -83,7 +83,6 @@ auto innerProductD (const iMatrix<l,N>& lhs,const iMatrix<r,N>& rhs) -> iScalar<
 {
   typedef decltype(innerProductD(lhs._internal[0][0],rhs._internal[0][0])) ret_t;
   iScalar<ret_t> ret;
-  iScalar<ret_t> tmp;
   ret=Zero();
   for(int c1=0;c1<N;c1++){
     for(int c2=0;c2<N;c2++){