internal static void TestSkylineSolver()
{
CantileverBeam benchmark = BuildCantileverBenchmark();
var solverBuilder = new SkylineSolver.Builder();
//solverBuilder.DofOrderer = new DofOrderer(new NodeMajorDofOrderingStrategy(), new NullReordering()); // default
ISolver solver = solverBuilder.BuildSolver(benchmark.Model);
RunAnalysisAndCheck(benchmark, solver);
}
internal static void TestSkylineSolverWithAmdReordering()
{
CantileverBeam benchmark = BuildCantileverBenchmark();
var solverBuilder = new SkylineSolver.Builder();
solverBuilder.DofOrderer = new DofOrderer(
new NodeMajorDofOrderingStrategy(), AmdReordering.CreateWithCSparseAmd());
ISolver solver = solverBuilder.BuildSolver(benchmark.Model);
RunAnalysisAndCheck(benchmark, solver);
}
internal static void TestPcgJacobiSolver()
{
CantileverBeam benchmark = BuildCantileverBenchmark();
//LibrarySettings.LinearAlgebraProviders = LinearAlgebraProviderChoice.MKL;
var solverBuilder = new PcgSolver.Builder();
//var pcgBuilder = new PcgAlgorithm.Builder();
//solverBuilder.PcgAlgorithm = pcgBuilder.Build(); // default
//solverBuilder.DofOrderer = new DofOrderer(new NodeMajorDofOrderingStrategy(), new NullReordering()); // default
PcgSolver solver = solverBuilder.BuildSolver(benchmark.Model);
RunAnalysisAndCheck(benchmark, solver);
}
internal static void TestSuiteSparseSolver()
{
Skip.IfNot(TestSettings.TestSuiteSparse, TestSettings.MessageWhenSkippingSuiteSparse);
CantileverBeam benchmark = BuildCantileverBenchmark();
var solverBuilder = new SuiteSparseSolver.Builder();
solverBuilder.DofOrderer = new DofOrderer(new NodeMajorDofOrderingStrategy(), new NullReordering());
using (SuiteSparseSolver solver = solverBuilder.BuildSolver(benchmark.Model))
{
RunAnalysisAndCheck(benchmark, solver);
}
}
internal static void TestPcgJacobiSolverWithAmdReordering()
{
CantileverBeam benchmark = BuildCantileverBenchmark();
var solverBuilder = new PcgSolver.Builder();
//var pcgBuilder = new PcgAlgorithm.Builder();
//solverBuilder.PcgAlgorithm = pcgBuilder.Build();
solverBuilder.DofOrderer = new DofOrderer(
new NodeMajorDofOrderingStrategy(), AmdReordering.CreateWithCSparseAmd());
PcgSolver solver = solverBuilder.BuildSolver(benchmark.Model);
RunAnalysisAndCheck(benchmark, solver);
}
private static Model CreateModel()
{
int numElementsX = 2, numElementsY = 4; // for the hardcoded stiffness matrices
var cantileverBuilder = new CantileverBeam.Builder();
cantileverBuilder.Length = numElementsX;
cantileverBuilder.Height = numElementsY;
cantileverBuilder.Width = 1.0;
cantileverBuilder.YoungModulus = 1.0;
cantileverBuilder.PoissonRatio = 0.3;
CantileverBeam cantilever = cantileverBuilder.BuildWithQuad4Elements(numElementsX, numElementsY);
return(cantilever.Model);
}
internal static void TestDenseSolver()
{
Skip.IfNot(TestSettings.TestMkl, TestSettings.MessageWhenSkippingMKL);
// Dense solver is too slow for a ~17.000 dof linear system, without MKL
TestSettings.RunMultiproviderTest(LinearAlgebraProviderChoice.MKL, delegate()
{
CantileverBeam benchmark = BuildCantileverBenchmark();
var solverBuilder = new DenseMatrixSolver.Builder();
DenseMatrixSolver solver = solverBuilder.BuildSolver(benchmark.Model);
//solverBuilder.DofOrderer = new DofOrderer(new NodeMajorDofOrderingStrategy(), new NullReordering()); // default
RunAnalysisAndCheck(benchmark, solver);
});
}
private static void RunAnalysisAndCheck(CantileverBeam benchmark, ISolver solver)
{
// Structural problem provider
var provider = new ProblemStructural(benchmark.Model, solver);
// Linear static analysis
var childAnalyzer = new LinearAnalyzer(benchmark.Model, solver, provider);
var parentAnalyzer = new StaticAnalyzer(benchmark.Model, solver, provider, childAnalyzer);
// Run the analysis
parentAnalyzer.Initialize();
parentAnalyzer.Solve();
// Check output
double endDeflectionExpected = benchmark.CalculateEndDeflectionWithEulerBeamTheory();
double endDeflectionComputed =
benchmark.CalculateAverageEndDeflectionFromSolution(solver.LinearSystems.First().Value.Solution);
var comparer = new ValueComparer(1E-2);
Assert.True(comparer.AreEqual(endDeflectionExpected, endDeflectionComputed));
}