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/* ******************************************************************** */
/* See the file COPYRIGHT for a complete copyright notice, contact */
/* person and disclaimer. */
/* ******************************************************************** */
#include "ml_config.h"
#include "ml_common.h"
#ifdef HAVE_ML_MLAPI
#include "MLAPI.h"
#include "MLAPI_MultiLevelNonSymmetricSA.h"
using namespace Teuchos;
using namespace MLAPI;
//
// ============== //
// example driver //
// ============== //
int main(int argc, char *argv[])
{
#ifdef HAVE_MPI
MPI_Init(&argc,&argv);
#endif
Init();
try {
int NX = 10; // number of nodes on the X-axis
int NY = 10; // number of nodes on the Y-axis
double conv = 1.0; // convection coefficient
double diff = 1e-5; // diffusion coefficient
Operator A = GetRecirc2D(NX, NY, conv, diff);
Teuchos::ParameterList List;
List.set("smoother: type", "symmetric Gauss-Seidel");
List.set("smoother: sweeps", 1);
List.set("aggregation: damping factor", 0.0);
List.set("coarse: max size", 32);
MultiLevelNonSymmetricSA Prec(A, List);
MultiVector LHS(A.GetRangeSpace());
MultiVector RHS(A.GetDomainSpace());
LHS.Random();
RHS = 0.0;
List.set("krylov: type", "gmres");
Krylov(A, LHS, RHS, Prec, List);
Finalize();
}
catch (const int e) {
cerr << "Caught integer exception, code = " << e << endl;
}
catch (...) {
cerr << "Caught exception..." << endl;
}
#ifdef HAVE_MPI
MPI_Finalize() ;
#endif
return(0);
}
#else
#include "ml_include.h"
int main(int argc, char *argv[])
{
#ifdef HAVE_MPI
MPI_Init(&argc,&argv);
#endif
puts("This MLAPI example requires the following configuration options:");
puts("\t--enable-epetra");
puts("\t--enable-teuchos");
puts("\t--enable-ifpack");
puts("\t--enable-amesos");
puts("Please check your configure line.");
#ifdef HAVE_MPI
MPI_Finalize();
#endif
return(0);
}
#endif // #if defined(HAVE_ML_MLAPI)
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