Changed overly verbose messages to error messages

src/TNL/Solvers/PDE/SemiImplicitTimeStepper_impl.h

@@ -58,10 +58,10 @@ bool
 SemiImplicitTimeStepper< Problem >::
 init( const MeshPointer& mesh )
 {
-  std::cout << "Setting up the linear system...";
-   if( ! this->problem->setupLinearSystem( this->matrix ) )
+   if( ! this->problem->setupLinearSystem( this->matrix ) ) {
+      std::cerr << "Failed to set up the linear system." << std::endl;
       return false;
-   std::cout << " [ OK ]" << std::endl;
+   }
    if( this->matrix.getData().getRows() == 0 || this->matrix.getData().getColumns() == 0 )
    {
       std::cerr << "The matrix for the semi-implicit time stepping was not set correctly." << std::endl;

src/TNL/Solvers/PDE/TimeDependentPDESolver_impl.h

@@ -97,11 +97,11 @@ setup( const Config::ParameterContainer& parameters,
    /***
     * Set-up the initial condition
     */
-   std::cout << "Setting up the initial condition ... ";
    typedef typename Problem :: DofVectorType DofVectorType;
-   if( ! this->problem->setInitialCondition( parameters, this->dofsPointer ) )
+   if( ! this->problem->setInitialCondition( parameters, this->dofsPointer ) ) {
+      std::cerr << "Failed to set up the initial condition." << std::endl;
       return false;
-   std::cout << " [ OK ]" << std::endl;
+   }
 
    /****
     * Initialize the time discretisation