diff --git a/bench/btl/libs/eigen3/eigen3_interface.hh b/bench/btl/libs/eigen3/eigen3_interface.hh
index 31bcc1f..b821fd7 100644
--- a/bench/btl/libs/eigen3/eigen3_interface.hh
+++ b/bench/btl/libs/eigen3/eigen3_interface.hh
@@ -45,15 +45,15 @@
     return EIGEN_MAKESTRING(BTL_PREFIX);
   }
 
-  static void free_matrix(gene_matrix & A, int N) {}
+  static void free_matrix(gene_matrix & /*A*/, int /*N*/) {}
 
-  static void free_vector(gene_vector & B) {}
+  static void free_vector(gene_vector & /*B*/) {}
 
   static BTL_DONT_INLINE void matrix_from_stl(gene_matrix & A, stl_matrix & A_stl){
     A.resize(A_stl[0].size(), A_stl.size());
 
-    for (int j=0; j<A_stl.size() ; j++){
-      for (int i=0; i<A_stl[j].size() ; i++){
+    for (unsigned int j=0; j<A_stl.size() ; j++){
+      for (unsigned int i=0; i<A_stl[j].size() ; i++){
         A.coeffRef(i,j) = A_stl[j][i];
       }
     }
@@ -62,19 +62,19 @@
   static BTL_DONT_INLINE  void vector_from_stl(gene_vector & B, stl_vector & B_stl){
     B.resize(B_stl.size(),1);
 
-    for (int i=0; i<B_stl.size() ; i++){
+    for (unsigned int i=0; i<B_stl.size() ; i++){
       B.coeffRef(i) = B_stl[i];
     }
   }
 
   static BTL_DONT_INLINE  void vector_to_stl(gene_vector & B, stl_vector & B_stl){
-    for (int i=0; i<B_stl.size() ; i++){
+    for (unsigned int i=0; i<B_stl.size() ; i++){
       B_stl[i] = B.coeff(i);
     }
   }
 
   static BTL_DONT_INLINE  void matrix_to_stl(gene_matrix & A, stl_matrix & A_stl){
-    int N=A_stl.size();
+    int  N=A_stl.size();
 
     for (int j=0;j<N;j++){
       A_stl[j].resize(N);
@@ -84,28 +84,28 @@
     }
   }
 
-  static inline void matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N){
+  static inline void matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int  /*N*/){
     X.noalias() = A*B;
   }
 
-  static inline void transposed_matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int N){
+  static inline void transposed_matrix_matrix_product(const gene_matrix & A, const gene_matrix & B, gene_matrix & X, int  /*N*/){
     X.noalias() = A.transpose()*B.transpose();
   }
 
-//   static inline void ata_product(const gene_matrix & A, gene_matrix & X, int N){
+//   static inline void ata_product(const gene_matrix & A, gene_matrix & X, int  /*N*/){
 //     X.noalias() = A.transpose()*A;
 //   }
 
-  static inline void aat_product(const gene_matrix & A, gene_matrix & X, int N){
+  static inline void aat_product(const gene_matrix & A, gene_matrix & X, int  /*N*/){
     X.template triangularView<Lower>().setZero();
     X.template selfadjointView<Lower>().rankUpdate(A);
   }
 
-  static inline void matrix_vector_product(const gene_matrix & A, const gene_vector & B, gene_vector & X, int N){
+  static inline void matrix_vector_product(const gene_matrix & A, const gene_vector & B, gene_vector & X, int  /*N*/){
     X.noalias() = A*B;
   }
 
-  static inline void symv(const gene_matrix & A, const gene_vector & B, gene_vector & X, int N){
+  static inline void symv(const gene_matrix & A, const gene_vector & B, gene_vector & X, int  /*N*/){
     X.noalias() = (A.template selfadjointView<Lower>() * B);
 //     internal::product_selfadjoint_vector<real,0,LowerTriangularBit,false,false>(N,A.data(),N, B.data(), 1, X.data(), 1);
   }
@@ -155,54 +155,54 @@
     }
   }
 
-  static EIGEN_DONT_INLINE void syr2(gene_matrix & A,  gene_vector & X, gene_vector & Y, int N){
+  static EIGEN_DONT_INLINE void syr2(gene_matrix & A,  gene_vector & X, gene_vector & Y, int  N){
     // internal::product_selfadjoint_rank2_update<real,0,LowerTriangularBit>(N,A.data(),N, X.data(), 1, Y.data(), 1, -1);
     for(int j=0; j<N; ++j)
       A.col(j).tail(N-j) += X[j] * Y.tail(N-j) + Y[j] * X.tail(N-j);
   }
 
-  static EIGEN_DONT_INLINE void ger(gene_matrix & A,  gene_vector & X, gene_vector & Y, int N){
+  static EIGEN_DONT_INLINE void ger(gene_matrix & A,  gene_vector & X, gene_vector & Y, int  N){
     for(int j=0; j<N; ++j)
       A.col(j) += X * Y[j];
   }
 
-  static EIGEN_DONT_INLINE void rot(gene_vector & A,  gene_vector & B, real c, real s, int N){
+  static EIGEN_DONT_INLINE void rot(gene_vector & A,  gene_vector & B, real c, real s, int  /*N*/){
     internal::apply_rotation_in_the_plane(A, B, JacobiRotation<real>(c,s));
   }
 
-  static inline void atv_product(gene_matrix & A, gene_vector & B, gene_vector & X, int N){
+  static inline void atv_product(gene_matrix & A, gene_vector & B, gene_vector & X, int  /*N*/){
     X.noalias() = (A.transpose()*B);
   }
 
-  static inline void axpy(real coef, const gene_vector & X, gene_vector & Y, int N){
+  static inline void axpy(real coef, const gene_vector & X, gene_vector & Y, int  /*N*/){
     Y += coef * X;
   }
 
-  static inline void axpby(real a, const gene_vector & X, real b, gene_vector & Y, int N){
+  static inline void axpby(real a, const gene_vector & X, real b, gene_vector & Y, int  /*N*/){
     Y = a*X + b*Y;
   }
 
-  static EIGEN_DONT_INLINE void copy_matrix(const gene_matrix & source, gene_matrix & cible, int N){
+  static EIGEN_DONT_INLINE void copy_matrix(const gene_matrix & source, gene_matrix & cible, int  /*N*/){
     cible = source;
   }
 
-  static EIGEN_DONT_INLINE void copy_vector(const gene_vector & source, gene_vector & cible, int N){
+  static EIGEN_DONT_INLINE void copy_vector(const gene_vector & source, gene_vector & cible, int  /*N*/){
     cible = source;
   }
 
-  static inline void trisolve_lower(const gene_matrix & L, const gene_vector& B, gene_vector& X, int N){
+  static inline void trisolve_lower(const gene_matrix & L, const gene_vector& B, gene_vector& X, int  /*N*/){
     X = L.template triangularView<Lower>().solve(B);
   }
 
-  static inline void trisolve_lower_matrix(const gene_matrix & L, const gene_matrix& B, gene_matrix& X, int N){
+  static inline void trisolve_lower_matrix(const gene_matrix & L, const gene_matrix& B, gene_matrix& X, int  /*N*/){
     X = L.template triangularView<Upper>().solve(B);
   }
 
-  static inline void trmm(const gene_matrix & L, const gene_matrix& B, gene_matrix& X, int N){
+  static inline void trmm(const gene_matrix & L, const gene_matrix& B, gene_matrix& X, int  /*N*/){
     X.noalias() = L.template triangularView<Lower>() * B;
   }
 
-  static inline void cholesky(const gene_matrix & X, gene_matrix & C, int N){
+  static inline void cholesky(const gene_matrix & X, gene_matrix & C, int  /*N*/){
     C = X;
     internal::llt_inplace<real,Lower>::blocked(C);
     //C = X.llt().matrixL();
@@ -211,11 +211,11 @@
 //     Cholesky<gene_matrix>::computeInPlaceBlock(C);
   }
 
-  static inline void lu_decomp(const gene_matrix & X, gene_matrix & C, int N){
+  static inline void lu_decomp(const gene_matrix & X, gene_matrix & C, int  /*N*/){
     C = X.fullPivLu().matrixLU();
   }
 
-  static inline void partial_lu_decomp(const gene_matrix & X, gene_matrix & C, int N){
+  static inline void partial_lu_decomp(const gene_matrix & X, gene_matrix & C, int  N){
     Matrix<DenseIndex,1,Dynamic> piv(N);
     DenseIndex nb;
     C = X;
@@ -223,13 +223,13 @@
 //     C = X.partialPivLu().matrixLU();
   }
 
-  static inline void tridiagonalization(const gene_matrix & X, gene_matrix & C, int N){
+  static inline void tridiagonalization(const gene_matrix & X, gene_matrix & C, int  N){
     typename Tridiagonalization<gene_matrix>::CoeffVectorType aux(N-1);
     C = X;
     internal::tridiagonalization_inplace(C, aux);
   }
 
-  static inline void hessenberg(const gene_matrix & X, gene_matrix & C, int N){
+  static inline void hessenberg(const gene_matrix & X, gene_matrix & C, int  /*N*/){
     C = HessenbergDecomposition<gene_matrix>(X).packedMatrix();
   }
 
diff --git a/bench/btl/libs/eigen3/main_adv.cpp b/bench/btl/libs/eigen3/main_adv.cpp
index efe5857..9586535 100644
--- a/bench/btl/libs/eigen3/main_adv.cpp
+++ b/bench/btl/libs/eigen3/main_adv.cpp
@@ -29,14 +29,14 @@
 
 int main()
 {
-  bench<Action_trisolve<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
-  bench<Action_trisolve_matrix<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
-  bench<Action_cholesky<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
-  bench<Action_lu_decomp<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
-  bench<Action_partial_lu<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
+  bench<Action_trisolve<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
+  bench<Action_trisolve_matrix<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
+  bench<Action_cholesky<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
+//   bench<Action_lu_decomp<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
+  bench<Action_partial_lu<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
 
-  bench<Action_hessenberg<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
-  bench<Action_tridiagonalization<eigen3_interface<REAL_TYPE> > >(MIN_MM,MAX_MM,NB_POINT);
+//   bench<Action_hessenberg<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
+  bench<Action_tridiagonalization<eigen3_interface<REAL_TYPE> > >(MIN_LU,MAX_LU,NB_POINT);
 
   return 0;
 }