Commit 65e1cc9e authored by Jakub Klinkovský's avatar Jakub Klinkovský
Browse files

Fixed ILU preconditioners for distributed matrices

parent 863a4f69

src/TNL/Solvers/Linear/Preconditioners/Diagonal_impl.h

+0 −3
Original line number Diff line number Diff line
@@ -96,9 +96,6 @@ solve( ConstVectorViewType b, VectorViewType x ) const 
   const auto b_view = b.getConstLocalView();

   auto x_view = x.getLocalView();



   // wait for pending synchronization

   b.waitForSynchronization();



   // compute without ghosts (diagonal includes only local rows)

   x_view = b_view / diag_view;

src/TNL/Solvers/Linear/Preconditioners/ILU0.h

+6 −1
Original line number Diff line number Diff line
@@ -90,7 +90,12 @@ protected: 
   template< typename M >

   static IndexType getMinColumn( const Matrices::DistributedMatrix< M >& m )

   {

      if( m.getRows() == m.getColumns() )

         // square matrix, assume global column indices

         return m.getLocalRowRange().getBegin();

      else

         // non-square matrix, assume ghost indexing

         return 0;

   }

};

src/TNL/Solvers/Linear/Preconditioners/ILU0_impl.h

+3 −0
Original line number Diff line number Diff line
@@ -145,6 +145,9 @@ solve( ConstVectorViewType _b, VectorViewType _x ) const 


   // Step 2: solve x from Ux = y

   triangularSolveUpper< true, true >( U, x, x );



   // synchronize ghosts

   Traits< Matrix >::startSynchronization( _x );

}

src/TNL/Solvers/Linear/Preconditioners/ILUT.h

+6 −1
Original line number Diff line number Diff line
@@ -79,7 +79,12 @@ protected: 
   template< typename M >

   static IndexType getMinColumn( const Matrices::DistributedMatrix< M >& m )

   {

      if( m.getRows() == m.getColumns() )

         // square matrix, assume global column indices

         return m.getLocalRowRange().getBegin();

      else

         // non-square matrix, assume ghost indexing

         return 0;

   }

};

src/TNL/Solvers/Linear/Preconditioners/ILUT_impl.h

+3 −0
Original line number Diff line number Diff line
@@ -272,6 +272,9 @@ solve( ConstVectorViewType _b, VectorViewType _x ) const 


   // Step 2: solve x from Ux = y

   triangularSolveUpper< true, false >( U, x, x );



   // synchronize ghosts

   Traits< Matrix >::startSynchronization( _x );

}



} // namespace Preconditioners