/// <summary>
/// Solution of the system
/// <see cref="LaplaceMtx"/>*<see cref="T"/> + <see cref="LaplaceAffine"/> = <see cref="RHS"/>
/// using a black-box solver
/// </summary>
private void ClassicSolve(out double mintime, out double maxtime, out bool Converged, out int NoOfIter)
{
mintime = double.MaxValue;
maxtime = double.MinValue;
Converged = false;
NoOfIter = int.MaxValue;
for (int i = 0; i < base.Control.NoOfSolverRuns; i++)
{
// create sparse solver
// --------------------
ISparseSolver ipSolver;
LinearSolverCode solvercodes = LinearSolverCode.classic_pardiso;
switch (solvercodes)
{
case LinearSolverCode.classic_pardiso:
ipSolver = new ilPSP.LinSolvers.PARDISO.PARDISOSolver()
{
CacheFactorization = true,
UseDoublePrecision = true
};
break;
case LinearSolverCode.classic_mumps:
ipSolver = new ilPSP.LinSolvers.MUMPS.MUMPSSolver();
break;
case LinearSolverCode.classic_cg:
ipSolver = new ilPSP.LinSolvers.monkey.CG()
{
MaxIterations = 1000000,
Tolerance = 1.0e-10,
DevType = ilPSP.LinSolvers.monkey.DeviceType.Cuda
};
break;
default:
throw new ArgumentException();
}
ipSolver.DefineMatrix(LaplaceMtx);
// call solver
// -----------
T.Clear();
Console.WriteLine("RUN " + i + ": solving system...");
var RHSvec = RHS.CoordinateVector.ToArray();
BLAS.daxpy(RHSvec.Length, -1.0, this.LaplaceAffine, 1, RHSvec, 1);
T.Clear();
SolverResult solRes = ipSolver.Solve(T.CoordinateVector, RHSvec);
mintime = Math.Min(solRes.RunTime.TotalSeconds, mintime);
maxtime = Math.Max(solRes.RunTime.TotalSeconds, maxtime);
Converged = solRes.Converged;
NoOfIter = solRes.NoOfIterations;
Console.WriteLine("Pardiso phase 11: " + ilPSP.LinSolvers.PARDISO.PARDISOSolver.Phase_11.Elapsed.TotalSeconds);
Console.WriteLine("Pardiso phase 22: " + ilPSP.LinSolvers.PARDISO.PARDISOSolver.Phase_22.Elapsed.TotalSeconds);
Console.WriteLine("Pardiso phase 33: " + ilPSP.LinSolvers.PARDISO.PARDISOSolver.Phase_33.Elapsed.TotalSeconds);
ipSolver.Dispose();
}
}
