private ConvergenceObserver ActivateCObserver(MultigridOperator mop, BlockMsrMatrix Massmatrix, SolverFactory SF, List <Action <int, double[], double[], MultigridOperator> > Callback)
{
Console.WriteLine("===Convergence Observer activated===");
//string AnalyseOutputpath = String.Join(@"\",this.Control.DbPath, this.CurrentSessionInfo.ID);
string AnalyseOutputpath = System.IO.Directory.GetCurrentDirectory();
var CO = new ConvergenceObserver(mop, Massmatrix, uEx.CoordinateVector.ToArray(), SF);
//CO.TecplotOut = String.Concat(AnalyseOutputpath, @"\Xdg_conv");
Callback.Add(CO.IterationCallback);
Console.WriteLine("Analysis output will be written to: {0}", AnalyseOutputpath);
Console.WriteLine("====================");
return(CO);
}
private void WriteTrendToDatabase(ConvergenceObserver CO)
{
CO.WriteTrendToSession(base.DatabaseDriver.FsDriver, this.CurrentSessionInfo);
}
/// <summary>
/// Solution of the system
/// <see cref="LaplaceMtx"/>*<see cref="T"/> + <see cref="LaplaceAffine"/> = <see cref="RHS"/>
/// using the modular solver framework.
/// </summary>
private void ExperimentalSolve(out double mintime, out double maxtime, out bool Converged, out int NoOfIter) {
using (var tr = new FuncTrace()) {
int p = this.T.Basis.Degree;
var MgSeq = this.MultigridSequence;
mintime = double.MaxValue;
maxtime = 0;
Converged = false;
NoOfIter = int.MaxValue;
Console.WriteLine("Construction of Multigrid basis...");
Stopwatch mgBasis = new Stopwatch();
mgBasis.Start();
AggregationGridBasis[][] AggBasis;
using (new BlockTrace("Aggregation_basis_init", tr)) {
AggBasis = AggregationGridBasis.CreateSequence(MgSeq, new Basis[] { this.T.Basis });
}
mgBasis.Stop();
Console.WriteLine("done. (" + mgBasis.Elapsed.TotalSeconds + " sec)");
//foreach (int sz in new int[] { 1000, 2000, 5000, 10000, 20000 }) {
// base.Control.TargetBlockSize = sz;
for (int irun = 0; irun < base.Control.NoOfSolverRuns; irun++) {
Stopwatch stw = new Stopwatch();
stw.Reset();
stw.Start();
Console.WriteLine("Setting up multigrid operator...");
var mgsetup = new Stopwatch();
mgsetup.Start();
var MultigridOp = new MultigridOperator(AggBasis, this.T.Mapping, this.LaplaceMtx, null, MgConfig);
mgsetup.Stop();
Console.WriteLine("done. (" + mgsetup.Elapsed.TotalSeconds + " sec)");
Console.WriteLine("Setting up solver...");
var solverSetup = new Stopwatch();
solverSetup.Start();
ISolverSmootherTemplate solver;
switch (base.Control.solver_name) {
case SolverCodes.exp_direct:
solver = new DirectSolver() {
WhichSolver = DirectSolver._whichSolver.PARDISO
};
break;
case SolverCodes.exp_direct_lapack:
solver = new DirectSolver() {
WhichSolver = DirectSolver._whichSolver.Lapack
};
break;
case SolverCodes.exp_softpcg_schwarz_directcoarse: {
double LL = this.LaplaceMtx._RowPartitioning.LocalLength;
int NoOfBlocks = (int)Math.Max(1, Math.Round(LL / (double)this.Control.TargetBlockSize));
Console.WriteLine("Additive Schwarz w. direct coarse, No of blocks: " + NoOfBlocks.MPISum());
solver = new SoftPCG() {
m_MaxIterations = 50000,
m_Tolerance = 1.0e-10,
Precond = new Schwarz() {
m_MaxIterations = 1,
//CoarseSolver = new GenericRestriction() {
// CoarserLevelSolver = new GenericRestriction() {
CoarseSolver = new DirectSolver() {
WhichSolver = DirectSolver._whichSolver.PARDISO
// }
//}
},
m_BlockingStrategy = new Schwarz.METISBlockingStrategy() {
NoOfPartsPerProcess = NoOfBlocks
},
Overlap = 1,
}
};
break;
}
case SolverCodes.exp_softpcg_schwarz: {
double LL = this.LaplaceMtx._RowPartitioning.LocalLength;
int NoOfBlocks = (int)Math.Max(1, Math.Round(LL / (double)this.Control.TargetBlockSize));
Console.WriteLine("Additive Schwarz, No of blocks: " + NoOfBlocks.MPISum());
solver = new SoftPCG() {
m_MaxIterations = 50000,
m_Tolerance = 1.0e-10,
Precond = new Schwarz() {
m_MaxIterations = 1,
CoarseSolver = null,
m_BlockingStrategy = new Schwarz.METISBlockingStrategy {
NoOfPartsPerProcess = NoOfBlocks
},
Overlap = 1
}
};
break;
}
case SolverCodes.exp_softpcg_mg:
solver = MultilevelSchwarz(MultigridOp);
break;
case SolverCodes.exp_Kcycle_schwarz:
solver = KcycleMultiSchwarz(MultigridOp);
break;
default:
throw new ApplicationException("unknown solver: " + this.Control.solver_name);
}
T.Clear();
T.AccLaidBack(1.0, Tex);
ConvergenceObserver CO = null;
//CO = new ConvergenceObserver(MultigridOp, null, T.CoordinateVector.ToArray());
//CO.TecplotOut = "oasch";
if (solver is ISolverWithCallback) {
if (CO == null) {
((ISolverWithCallback)solver).IterationCallback = delegate (int iter, double[] xI, double[] rI, MultigridOperator mgOp) {
double l2_RES = rI.L2NormPow2().MPISum().Sqrt();
double[] xRef = new double[xI.Length];
MultigridOp.TransformSolInto(T.CoordinateVector, xRef);
double l2_ERR = GenericBlas.L2DistPow2(xI, xRef).MPISum().Sqrt();
Console.WriteLine("Iter: {0}\tRes: {1:0.##E-00}\tErr: {2:0.##E-00}\tRunt: {3:0.##E-00}", iter, l2_RES, l2_ERR, stw.Elapsed.TotalSeconds);
//Tjac.CoordinatesAsVector.SetV(xI);
//Residual.CoordinatesAsVector.SetV(rI);
//PlotCurrentState(iter, new TimestepNumber(iter), 3);
};
} else {
((ISolverWithCallback)solver).IterationCallback = CO.IterationCallback;
}
}
using (new BlockTrace("Solver_Init", tr)) {
solver.Init(MultigridOp);
}
solverSetup.Stop();
Console.WriteLine("done. (" + solverSetup.Elapsed.TotalSeconds + " sec)");
Console.WriteLine("Running solver...");
var solverIteration = new Stopwatch();
solverIteration.Start();
double[] T2 = this.T.CoordinateVector.ToArray();
using (new BlockTrace("Solver_Run", tr)) {
solver.ResetStat();
T2.Clear();
var RHSvec = RHS.CoordinateVector.ToArray();
BLAS.daxpy(RHSvec.Length, -1.0, this.LaplaceAffine, 1, RHSvec, 1);
MultigridOp.UseSolver(solver, T2, RHSvec);
T.CoordinateVector.SetV(T2);
}
solverIteration.Stop();
Console.WriteLine("done. (" + solverIteration.Elapsed.TotalSeconds + " sec)");
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);
// time measurement, statistics
stw.Stop();
mintime = Math.Min(stw.Elapsed.TotalSeconds, mintime);
maxtime = Math.Max(stw.Elapsed.TotalSeconds, maxtime);
Converged = solver.Converged;
NoOfIter = solver.ThisLevelIterations;
if (CO != null)
CO.PlotTrend(true, true, true);
}
}
}
