Example #1
0
        public static void SubMatrixTest(
            [Values(XDGusage.none, XDGusage.mixed1, XDGusage.mixed2, XDGusage.all)] XDGusage UseXdg,
            [Values(1, 3)] int DGOrder,
            [Values(false, true)] bool compressL1,
            [Values(false, true)] bool compressL2)
        {
            unsafe
            {
                int[] Params = new int[8], ParamsGlob = new int[8];
                fixed(int *pParams = Params, pParamsGlob = ParamsGlob)
                {
                    pParams[0] = (int)UseXdg;
                    pParams[1] = DGOrder;
                    pParams[2] = compressL1 ? 1 : 0;
                    pParams[3] = compressL2 ? 1 : 0;
                    pParams[4] = -pParams[0];
                    pParams[5] = -pParams[1];
                    pParams[6] = -pParams[2];
                    pParams[7] = -pParams[3];

                    csMPI.Raw.Allreduce((IntPtr)pParams, (IntPtr)pParamsGlob, 8, csMPI.Raw._DATATYPE.INT, csMPI.Raw._OP.MIN, csMPI.Raw._COMM.WORLD);
                }

                int[] ParamsMin = ParamsGlob.GetSubVector(0, 4);
                int[] ParamsMax = ParamsGlob.GetSubVector(4, 4);
                for (int i = 0; i < 4; i++)
                {
                    if (Params[i] != ParamsMin[i])
                    {
                        throw new ApplicationException();
                    }
                    if (Params[i] != -ParamsMax[i])
                    {
                        throw new ApplicationException();
                    }
                }

                Console.WriteLine("SubMatrixTest({0},{1},{2},{3})", UseXdg, DGOrder, compressL1, compressL2);
            }

            using (var solver = new Matrix_MPItestMain()
            {
                m_UseXdg = UseXdg, m_DGorder = DGOrder
            }) {
                // create the test data
                // ====================

                BoSSS.Solution.Application.CommandLineOptions opts = null;
                //opts = new BoSSS.Solution.Application.CommandLineOptions();
                solver.Init(null, opts);
                solver.RunSolverMode();

                Stopwatch stw = new Stopwatch();
                stw.Reset();
                stw.Start();

                BlockMsrMatrix M = solver.OperatorMatrix;

                int[] Ilist1 = solver.ProblemMapping.GetSubvectorIndices(false, 0);
                int[] Ilist2 = solver.ProblemMapping.GetSubvectorIndices(false, 1);

                foreach (int i in Ilist1)
                {
                    Assert.IsTrue(solver.ProblemMapping.IsInLocalRange(i));
                }
                foreach (int i in Ilist2)
                {
                    Assert.IsTrue(solver.ProblemMapping.IsInLocalRange(i));
                }

                var Blk1 = solver.ProblemMapping.GetSubBlocking(Ilist1, csMPI.Raw._COMM.WORLD, compressL1 ? -1 : 0);
                var Blk2 = solver.ProblemMapping.GetSubBlocking(Ilist2, csMPI.Raw._COMM.WORLD, compressL2 ? -1 : 0);



                int[] Tlist1 = compressL1 ? default(int[]) : Blk1.GetOccupiedIndicesList();
                int[] Tlist2 = compressL2 ? default(int[]) : Blk2.GetOccupiedIndicesList();
                if (Tlist1 != null)
                {
                    Assert.AreEqual(Tlist1.Length, Ilist1.Length);
                    foreach (int i in Tlist1)
                    {
                        Assert.IsTrue(Blk1.IsInLocalRange(i));
                    }
                }
                if (Tlist2 != null)
                {
                    Assert.AreEqual(Tlist2.Length, Ilist2.Length);
                    foreach (int i in Tlist2)
                    {
                        Assert.IsTrue(Blk2.IsInLocalRange(i));
                    }
                }
                BlockMsrMatrix M11 = new BlockMsrMatrix(Blk1, Blk1);
                BlockMsrMatrix M12 = new BlockMsrMatrix(Blk1, Blk2);
                BlockMsrMatrix M21 = new BlockMsrMatrix(Blk2, Blk1);
                BlockMsrMatrix M22 = new BlockMsrMatrix(Blk2, Blk2);

                M.AccSubMatrixTo(1.0, M11, Ilist1, Tlist1, Ilist1, Tlist1);
                M.AccSubMatrixTo(1.0, M12, Ilist1, Tlist1, Ilist2, Tlist2);
                M.AccSubMatrixTo(1.0, M21, Ilist2, Tlist2, Ilist1, Tlist1);
                M.AccSubMatrixTo(1.0, M22, Ilist2, Tlist2, Ilist2, Tlist2);

                BlockMsrMatrix restored_M = new BlockMsrMatrix(M._RowPartitioning, M._ColPartitioning);
                int[]          Idx1       = compressL1 ? Blk1.LocalLength.ForLoop(i => i + Blk1.i0) : Tlist1;
                int[]          Idx2       = compressL2 ? Blk2.LocalLength.ForLoop(i => i + Blk2.i0) : Tlist2;
                M11.AccSubMatrixTo(1.0, restored_M, Idx1, Ilist1, Idx1, Ilist1);
                M12.AccSubMatrixTo(1.0, restored_M, Idx1, Ilist1, Idx2, Ilist2);
                M21.AccSubMatrixTo(1.0, restored_M, Idx2, Ilist2, Idx1, Ilist1);
                M22.AccSubMatrixTo(1.0, restored_M, Idx2, Ilist2, Idx2, Ilist2);

                // test transpose-operator
                var M_TT   = M.Transpose().Transpose();
                var M11_TT = M11.Transpose().Transpose();
                var M12_TT = M12.Transpose().Transpose();
                var M21_TT = M21.Transpose().Transpose();
                var M22_TT = M22.Transpose().Transpose();
                M_TT.Acc(-1.0, M);
                M11_TT.Acc(-1.0, M11);
                M12_TT.Acc(-1.0, M12);
                M21_TT.Acc(-1.0, M21);
                M22_TT.Acc(-1.0, M22);
                double M_TT_norm   = M_TT.InfNorm();
                double M11_TT_norm = M11_TT.InfNorm();
                double M12_TT_norm = M12_TT.InfNorm();
                double M21_TT_norm = M21_TT.InfNorm();
                double M22_TT_norm = M22_TT.InfNorm();
                Assert.IsTrue(M_TT_norm == 0.0, "Transpose^2 is not identity.");
                Assert.IsTrue(M11_TT_norm == 0.0, "Transpose^2 is not identity.");
                Assert.IsTrue(M12_TT_norm == 0.0, "Transpose^2 is not identity.");
                Assert.IsTrue(M21_TT_norm == 0.0, "Transpose^2 is not identity.");
                Assert.IsTrue(M22_TT_norm == 0.0, "Transpose^2 is not identity.");

                //M.SaveToTextFileSparse(@"C:\tmp\M.txt");
                //M11.SaveToTextFileSparse(@"C:\tmp\M11.txt");
                //M12.SaveToTextFileSparse(@"C:\tmp\M12.txt");
                //M21.SaveToTextFileSparse(@"C:\tmp\M21.txt");
                //M22.SaveToTextFileSparse(@"C:\tmp\M22.txt");
                //restored_M.SaveToTextFileSparse(@"C:\tmp\Mr.txt");

                stw.Stop();

                using (var MatlabRef = new BatchmodeConnector()) {
                    MatlabRef.PutVector(Ilist1.Select(i => (double)i + 1.0).ToArray(), "Ilist1");
                    MatlabRef.PutVector(Ilist2.Select(i => (double)i + 1.0).ToArray(), "Ilist2");
                    MatlabRef.PutVector(Tlist1 == null ? Ilist1.Length.ForLoop(i => (double)i + 1.0 + Blk1.i0) : Tlist1.Select(i => (double)i + 1.0).ToArray(), "Tlist1");
                    MatlabRef.PutVector(Tlist2 == null ? Ilist2.Length.ForLoop(i => (double)i + 1.0 + Blk2.i0) : Tlist2.Select(i => (double)i + 1.0).ToArray(), "Tlist2");

                    MultidimensionalArray CheckRes = MultidimensionalArray.Create(1, 4);

                    MatlabRef.PutSparseMatrix(M, "M");
                    MatlabRef.PutSparseMatrix(M11, "M11");
                    MatlabRef.PutSparseMatrix(M12, "M12");
                    MatlabRef.PutSparseMatrix(M21, "M21");
                    MatlabRef.PutSparseMatrix(M22, "M22");

                    MatlabRef.Cmd("L1 = {0};", Blk1.TotalLength);
                    MatlabRef.Cmd("L2 = {0};", Blk2.TotalLength);
                    MatlabRef.Cmd("refM11 = sparse(L1, L1);");
                    MatlabRef.Cmd("refM12 = sparse(L1, L2);");
                    MatlabRef.Cmd("refM21 = sparse(L2, L1);");
                    MatlabRef.Cmd("refM22 = sparse(L2, L2);");

                    MatlabRef.Cmd("refM11(Tlist1, Tlist1) = M(Ilist1, Ilist1);");
                    MatlabRef.Cmd("refM12(Tlist1, Tlist2) = M(Ilist1, Ilist2);");
                    MatlabRef.Cmd("refM21(Tlist2, Tlist1) = M(Ilist2, Ilist1);");
                    MatlabRef.Cmd("refM22(Tlist2, Tlist2) = M(Ilist2, Ilist2);");

                    MatlabRef.Cmd("err11 = norm(refM11 - M11, inf);");
                    MatlabRef.Cmd("err12 = norm(refM12 - M12, inf);");
                    MatlabRef.Cmd("err21 = norm(refM21 - M21, inf);");
                    MatlabRef.Cmd("err22 = norm(refM22 - M22, inf);");

                    MatlabRef.Cmd("CheckRes = [err11, err12, err21, err22];");
                    MatlabRef.GetMatrix(CheckRes, "CheckRes");

                    MatlabRef.Execute();

                    Console.WriteLine("Matlab check 11: " + CheckRes[0, 0]);
                    Console.WriteLine("Matlab check 12: " + CheckRes[0, 1]);
                    Console.WriteLine("Matlab check 21: " + CheckRes[0, 2]);
                    Console.WriteLine("Matlab check 22: " + CheckRes[0, 3]);

                    Assert.IsTrue(CheckRes[0, 0] == 0.0);
                    Assert.IsTrue(CheckRes[0, 1] == 0.0);
                    Assert.IsTrue(CheckRes[0, 2] == 0.0);
                    Assert.IsTrue(CheckRes[0, 3] == 0.0);
                }

                stw.Start();

                restored_M.Acc(-1.0, M);
                double err = restored_M.InfNorm();
                Console.WriteLine("Submatrix operations error: " + err);
                Assert.IsTrue(err == 0.0);

                restored_M.Clear();
                restored_M.Acc(1.0, M);
                IMutuableMatrixEx_Extensions.Acc(restored_M, -1.0, M);
                double err2 = restored_M.InfNorm();
                Console.WriteLine("Submatrix operations error: " + err2);
                Assert.IsTrue(err2 == 0.0);

                stw.Stop();

                Console.WriteLine("Time spend in matrix operations: " + stw.Elapsed.TotalSeconds + " sec.");

                TotTime_MatrixOp += stw.Elapsed;
            }
        }
Example #2
0
        public static void SpMVTest(
            [Values(XDGusage.none, XDGusage.mixed1, XDGusage.mixed2, XDGusage.all)] XDGusage UseXdg,
            [Values(1, 3)] int DGOrder,
            [Values(false, true)] bool compressL1,
            [Values(false, true)] bool compressL2)
        {
            unsafe
            {
                int[] Params = new int[8], ParamsGlob = new int[8];
                fixed(int *pParams = Params, pParamsGlob = ParamsGlob)
                {
                    pParams[0] = (int)UseXdg;
                    pParams[1] = DGOrder;
                    pParams[2] = compressL1 ? 1 : 0;
                    pParams[3] = compressL2 ? 1 : 0;
                    pParams[4] = -pParams[0];
                    pParams[5] = -pParams[1];
                    pParams[6] = -pParams[2];
                    pParams[7] = -pParams[3];

                    csMPI.Raw.Allreduce((IntPtr)pParams, (IntPtr)pParamsGlob, 8, csMPI.Raw._DATATYPE.INT, csMPI.Raw._OP.MIN, csMPI.Raw._COMM.WORLD);
                }

                int[] ParamsMin = ParamsGlob.GetSubVector(0, 4);
                int[] ParamsMax = ParamsGlob.GetSubVector(4, 4);
                for (int i = 0; i < 4; i++)
                {
                    if (Params[i] != ParamsMin[i])
                    {
                        throw new ApplicationException();
                    }
                    if (Params[i] != -ParamsMax[i])
                    {
                        throw new ApplicationException();
                    }
                }

                Console.WriteLine("SpMVTest({0},{1},{2},{3})", UseXdg, DGOrder, compressL1, compressL2);
            }

            using (var solver = new Matrix_MPItestMain()
            {
                m_UseXdg = UseXdg, m_DGorder = DGOrder
            }) {
                // create the test data
                // ====================

                BoSSS.Solution.Application.CommandLineOptions opts = null;
                //opts = new BoSSS.Solution.Application.CommandLineOptions();
                solver.Init(null, opts);
                solver.RunSolverMode();

                Stopwatch stw = new Stopwatch();
                stw.Reset();

                BlockMsrMatrix M = solver.OperatorMatrix;
                double[]       B = new double[M.RowPartitioning.LocalLength];
                double[]       X = new double[M.ColPartition.LocalLength];

                Random R = new Random();
                for (int i = 0; i < X.Length; i++)
                {
                    X[i] = R.NextDouble();
                }
                for (int i = 0; i < B.Length; i++)
                {
                    B[i] = R.NextDouble();
                }

                double[] Bb4 = B.CloneAs();

                double RefNorm = B.L2NormPow2().MPISum().Sqrt() * 1e-10;

                stw.Start();

                M.SpMV(1.6, X, 0.5, B);

                stw.Stop();

                //M.SaveToTextFileSparse(@"C:\tmp\M.txt");
                //M11.SaveToTextFileSparse(@"C:\tmp\M11.txt");
                //M12.SaveToTextFileSparse(@"C:\tmp\M12.txt");
                //M21.SaveToTextFileSparse(@"C:\tmp\M21.txt");
                //M22.SaveToTextFileSparse(@"C:\tmp\M22.txt");
                //M22xM21.SaveToTextFileSparse(@"C:\tmp\M22xM21.txt");


                using (var MatlabRef = new BatchmodeConnector()) {
                    MultidimensionalArray CheckRes = MultidimensionalArray.Create(1, 1);

                    MatlabRef.PutSparseMatrix(M, "M");
                    MatlabRef.PutVector(Bb4, "Bref");
                    MatlabRef.PutVector(B, "B");
                    MatlabRef.PutVector(X, "X");


                    MatlabRef.Cmd("Bref = Bref*0.5 + M*X*1.6;");
                    MatlabRef.Cmd("errB = norm(B - Bref, 2);");

                    MatlabRef.Cmd("CheckRes = [errB];");
                    MatlabRef.GetMatrix(CheckRes, "CheckRes");



                    MatlabRef.Execute();

                    Console.WriteLine("Matlab check SpMV: " + CheckRes[0, 0]);


                    Assert.LessOrEqual(CheckRes[0, 0], RefNorm, "Error in SpMV");
                }


                Console.WriteLine("Time spend in matrix operations: " + stw.Elapsed.TotalSeconds + " sec.");

                TotTime_MatrixOp += stw.Elapsed;
            }
        }
Example #3
0
        public static void MultiplyTest(
            [Values(XDGusage.none, XDGusage.mixed1, XDGusage.mixed2, XDGusage.all)] XDGusage UseXdg,
            [Values(1, 3)] int DGOrder,
            [Values(false, true)] bool compressL1,
            [Values(false, true)] bool compressL2)
        {
            unsafe
            {
                int[] Params = new int[8], ParamsGlob = new int[8];
                fixed(int *pParams = Params, pParamsGlob = ParamsGlob)
                {
                    pParams[0] = (int)UseXdg;
                    pParams[1] = DGOrder;
                    pParams[2] = compressL1 ? 1 : 0;
                    pParams[3] = compressL2 ? 1 : 0;
                    pParams[4] = -pParams[0];
                    pParams[5] = -pParams[1];
                    pParams[6] = -pParams[2];
                    pParams[7] = -pParams[3];

                    csMPI.Raw.Allreduce((IntPtr)pParams, (IntPtr)pParamsGlob, 8, csMPI.Raw._DATATYPE.INT, csMPI.Raw._OP.MIN, csMPI.Raw._COMM.WORLD);
                }

                int[] ParamsMin = ParamsGlob.GetSubVector(0, 4);
                int[] ParamsMax = ParamsGlob.GetSubVector(4, 4);
                for (int i = 0; i < 4; i++)
                {
                    if (Params[i] != ParamsMin[i])
                    {
                        throw new ApplicationException();
                    }
                    if (Params[i] != -ParamsMax[i])
                    {
                        throw new ApplicationException();
                    }
                }

                Console.WriteLine("MultiplyTest({0},{1},{2},{3})", UseXdg, DGOrder, compressL1, compressL2);
            }

            using (var solver = new Matrix_MPItestMain()
            {
                m_UseXdg = UseXdg, m_DGorder = DGOrder
            }) {
                // create the test data
                // ====================

                solver.Init(null);
                solver.RunSolverMode();

                Stopwatch stw = new Stopwatch();
                stw.Reset();
                stw.Start();

                BlockMsrMatrix M = solver.OperatorMatrix;

                int[] Ilist1 = solver.ProblemMapping.GetSubvectorIndices(false, 0);
                int[] Ilist2 = solver.ProblemMapping.GetSubvectorIndices(false, 1);

                foreach (int i in Ilist1)
                {
                    Assert.IsTrue(solver.ProblemMapping.IsInLocalRange(i));
                }
                foreach (int i in Ilist2)
                {
                    Assert.IsTrue(solver.ProblemMapping.IsInLocalRange(i));
                }

                var Blk1 = solver.ProblemMapping.GetSubBlocking(Ilist1, csMPI.Raw._COMM.WORLD, compressL1 ? -1 : 0);
                var Blk2 = solver.ProblemMapping.GetSubBlocking(Ilist2, csMPI.Raw._COMM.WORLD, compressL2 ? -1 : 0);



                int[] Tlist1 = compressL1 ? default(int[]) : Blk1.GetOccupiedIndicesList();
                int[] Tlist2 = compressL2 ? default(int[]) : Blk2.GetOccupiedIndicesList();
                if (Tlist1 != null)
                {
                    Assert.AreEqual(Tlist1.Length, Ilist1.Length);
                    foreach (int i in Tlist1)
                    {
                        Assert.IsTrue(Blk1.IsInLocalRange(i));
                    }
                }
                if (Tlist2 != null)
                {
                    Assert.AreEqual(Tlist2.Length, Ilist2.Length);
                    foreach (int i in Tlist2)
                    {
                        Assert.IsTrue(Blk2.IsInLocalRange(i));
                    }
                }
                BlockMsrMatrix M11 = new BlockMsrMatrix(Blk1, Blk1);
                BlockMsrMatrix M12 = new BlockMsrMatrix(Blk1, Blk2);
                BlockMsrMatrix M21 = new BlockMsrMatrix(Blk2, Blk1);
                BlockMsrMatrix M22 = new BlockMsrMatrix(Blk2, Blk2);

                M.AccSubMatrixTo(1.0, M11, Ilist1, Tlist1, Ilist1, Tlist1);
                M.AccSubMatrixTo(1.0, M12, Ilist1, Tlist1, Ilist2, Tlist2);
                M.AccSubMatrixTo(1.0, M21, Ilist2, Tlist2, Ilist1, Tlist1);
                M.AccSubMatrixTo(1.0, M22, Ilist2, Tlist2, Ilist2, Tlist2);

                /*
                 * MultidimensionalArray CheckRes2 = MultidimensionalArray.Create(1, 4);
                 * using (var MatlabRef = new BatchmodeConnector()) {
                 *
                 *  MatlabRef.PutVector(Ilist1.Select(i => (double)i + 1.0).ToArray(), "Ilist1");
                 *  MatlabRef.PutVector(Ilist2.Select(i => (double)i + 1.0).ToArray(), "Ilist2");
                 *  MatlabRef.PutVector(Tlist1 == null ? Ilist1.Length.ForLoop(i => (double)i + 1.0 + Blk1.i0) : Tlist1.Select(i => (double)i + 1.0).ToArray(), "Tlist1");
                 *  MatlabRef.PutVector(Tlist2 == null ? Ilist2.Length.ForLoop(i => (double)i + 1.0 + Blk2.i0) : Tlist2.Select(i => (double)i + 1.0).ToArray(), "Tlist2");
                 *
                 *  MatlabRef.PutSparseMatrix(solver.AltOperatorMatrix, "M");
                 *
                 *
                 *  MatlabRef.Cmd("L1 = {0};", Blk1.TotalLength);
                 *  MatlabRef.Cmd("L2 = {0};", Blk2.TotalLength);
                 *  //MatlabRef.Cmd("refM11 = sparse(L1, L1);");
                 *  //MatlabRef.Cmd("refM12 = sparse(L1, L2);");
                 *  MatlabRef.Cmd("refM21 = sparse(L2, L1);");
                 *  //MatlabRef.Cmd("refM22 = sparse(L2, L2);");
                 *
                 *  //MatlabRef.Cmd("refM11(Tlist1, Tlist1) = M(Ilist1, Ilist1);");
                 *  //MatlabRef.Cmd("refM12(Tlist1, Tlist2) = M(Ilist1, Ilist2);");
                 *  MatlabRef.Cmd("refM21(Tlist2, Tlist1) = M(Ilist2, Ilist1);");
                 *  //MatlabRef.Cmd("refM22(Tlist2, Tlist2) = M(Ilist2, Ilist2);");
                 *
                 *  //MatlabRef.Cmd("err11 = norm(refM11 - M11, inf);");
                 *  //MatlabRef.Cmd("err12 = norm(refM12 - M12, inf);");
                 *  //MatlabRef.Cmd("err21 = norm(refM21 - M21, inf);");
                 *  //MatlabRef.Cmd("err22 = norm(refM22 - M22, inf);");
                 *
                 *  MatlabRef.Cmd("CheckRes = [refM21(1339, 1321), 0.0, 1.567, 0 ];");
                 *  MatlabRef.GetMatrix(CheckRes2, "CheckRes");
                 *
                 *  MatlabRef.Execute();
                 * }
                 */

                // test multipliation (later verified by matlab)
                BlockMsrMatrix M11xM12 = new BlockMsrMatrix(M11._RowPartitioning, M12._ColPartitioning);
                M11xM12.Acc(1.0, M12);
                BlockMsrMatrix.Multiply(M11xM12, M11, M12);

                BlockMsrMatrix M22xM21 = new BlockMsrMatrix(M22._RowPartitioning, M21._ColPartitioning);
                BlockMsrMatrix.Multiply(M22xM21, M22, M21);
                double ProdNorm = M22xM21.InfNorm();



                stw.Stop();

                //M.SaveToTextFileSparse(@"C:\tmp\M.txt");
                //M11.SaveToTextFileSparse(@"C:\tmp\M11.txt");
                //M12.SaveToTextFileSparse(@"C:\tmp\M12.txt");
                //M21.SaveToTextFileSparse(@"C:\tmp\M21.txt");
                //M22.SaveToTextFileSparse(@"C:\tmp\M22.txt");
                //M22xM21.SaveToTextFileSparse(@"C:\tmp\M22xM21.txt");


                using (var MatlabRef = new BatchmodeConnector()) {
                    MultidimensionalArray CheckRes = MultidimensionalArray.Create(1, 4);

                    MatlabRef.PutSparseMatrix(M11, "M11");
                    MatlabRef.PutSparseMatrix(M12, "M12");
                    MatlabRef.PutSparseMatrix(M21, "M21");
                    MatlabRef.PutSparseMatrix(M22, "M22");
                    MatlabRef.PutSparseMatrix(M11xM12, "M11xM12");
                    MatlabRef.PutSparseMatrix(M22xM21, "M22xM21");

                    MatlabRef.Cmd("refM11xM12 = M12 + M11*M12;");
                    MatlabRef.Cmd("refM22xM21 = M22*M21;");

                    MatlabRef.Cmd("err1112 = norm(refM11xM12 - M11xM12, inf);");
                    MatlabRef.Cmd("err2221 = norm(refM22xM21 - M22xM21, inf);");

                    MatlabRef.Cmd("CheckRes = [err1112, err2221, 0, 0];");
                    MatlabRef.GetMatrix(CheckRes, "CheckRes");

                    MatlabRef.Execute();

                    Console.WriteLine("Matlab check M11*M12: " + CheckRes[0, 0]);
                    Console.WriteLine("Matlab check M22*M21: " + CheckRes[0, 1]);

                    Assert.IsTrue(CheckRes[0, 0] == 0.0);
                    Assert.IsTrue(CheckRes[0, 1] < 1.0e-10 * ProdNorm);
                    //Assert.IsTrue(CheckRes[0, 2] == 0.0);
                    //Assert.IsTrue(CheckRes[0, 3] == 0.0);
                }


                Console.WriteLine("Time spend in matrix operations: " + stw.Elapsed.TotalSeconds + " sec.");

                TotTime_MatrixOp += stw.Elapsed;
            }
        }