ShallowWaterSolver.cpp File Reference

#include <LibUtilities/BasicUtils/SessionReader.h>
#include <LibUtilities/BasicUtils/Timer.h>
#include <SolverUtils/EquationSystem.h>

Go to the source code of this file.

Functions
int	main (int argc, char *argv[])

Function Documentation

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 43 of file ShallowWaterSolver.cpp.

{
    // Create session reader and MeshGraph.
    LibUtilities::SessionReaderSharedPtr session;
    session = LibUtilities::SessionReader::CreateInstance(argc, argv);
 
    SpatialDomains::MeshGraphSharedPtr graph;
    graph = SpatialDomains::MeshGraph::Read(session);
 
    Nektar::LibUtilities::Timer timer;
    NekDouble CPUtime;
    EquationSystemSharedPtr equ;
 
    // Record start time.
    timer.Start();
 
    // Create instance of module to solve the equation specified in the session.
    try
    {
        equ = GetEquationSystemFactory().CreateInstance(
            session->GetSolverInfo("EQTYPE"), session, graph);
    }
    catch (int e)
    {
        ASSERTL0(e == -1, "No such solver class defined.");
    }
 
    // Print a summary of solver and problem parameters and initialise the
    // solver.
    equ->PrintSummary(cout);
    equ->DoInitialise();
 
    // Solve the problem.
    equ->DoSolve();
 
    // Record end time.
    timer.Stop();
    CPUtime = (1.0 / 60.0 / 60.0) * timer.Elapsed().count();
 
    // Write output to .fld file
    equ->Output();
 
    // Evaluate and output computation time and solution accuracy.
    // The specific format of the error output is essential for the
    // regression tests to work.
    cout << "-------------------------------------------" << endl;
    cout << "Total Computation Time = " << CPUtime << " hr." << endl;
 
    for (int i = 0; i < equ->GetNvariables(); ++i)
    {
        cout << "L 2 error (variable " << equ->GetVariable(i)
             << "): " << equ->L2Error(i, true) << endl;
        cout << "L inf error (variable " << equ->GetVariable(i)
             << "): " << equ->LinfError(i) << endl;
    }
 
    session->Finalise();
}

References ASSERTL0, Nektar::LibUtilities::NekFactory< tKey, tBase, tParam >::CreateInstance(), Nektar::LibUtilities::Timer::Elapsed(), Nektar::SolverUtils::GetEquationSystemFactory(), Nektar::LibUtilities::Timer::Start(), and Nektar::LibUtilities::Timer::Stop().