SolverFCBIILU2.cpp 8.28 KB
Newer Older
Dmitry Bagaev's avatar
Dmitry Bagaev committed
1
#include <Source/Misc/utils.h>
2
#include "SolverFCBIILU2.h"
Dmitry Bagaev's avatar
Dmitry Bagaev committed
3
#include "solver_fcbiilu2.h"
4
5
6

namespace INMOST {

Dmitry Bagaev's avatar
Dmitry Bagaev committed
7
    SolverFCBIILU2::SolverFCBIILU2() {
Dmitry Bagaev's avatar
Dmitry Bagaev committed
8
9
        solver_data = NULL;
        matrix_data = NULL;
10
11
    }

Dmitry Bagaev's avatar
Dmitry Bagaev committed
12
    SolverInterface *SolverFCBIILU2::Copy(const SolverInterface *other) {
13
14
15
16
17
18
19
20
21
        if (other == NULL) {
            throw INMOST::SolverCopyNullException;
        }
        const SolverFCBIILU2 *fcother;
        try {
            fcother = dynamic_cast<const SolverFCBIILU2 *>(other);
        } catch (...) {
            throw INMOST::SolverCopyException;
        }
22
23
24
25
26
        SolverCopyDataFcbiilu2(&solver_data, fcother->solver_data, communicator);
        if (fcother->matrix_data != NULL) {
            MatrixCopyDataFcbiilu2(&matrix_data, fcother->matrix_data);
            SolverSetMatrixFcbiilu2(solver_data, matrix_data, false, false);
        }
Dmitry Bagaev's avatar
Dmitry Bagaev committed
27
        return this;
28
29
30
    }

    void SolverFCBIILU2::Assign(const SolverInterface *other) {
31
32
33
34
35
36
37
38
39
        if (other == NULL) {
            throw INMOST::SolverAssignNullException;
        }
        const SolverFCBIILU2 *fcother;
        try {
            fcother = dynamic_cast<const SolverFCBIILU2 *>(other);
        } catch (...) {
            throw INMOST::SolverAssignException;
        }
40
41
42
43
44
45
46
47
48
49
50
        SolverAssignDataFcbiilu2(solver_data, fcother->solver_data);
        if (fcother->matrix_data != NULL) {
            if (matrix_data != NULL) {
                MatrixAssignDataFcbiilu2(matrix_data, fcother->matrix_data);
            } else {
                MatrixCopyDataFcbiilu2(&matrix_data, fcother->matrix_data);
            }
            SolverSetMatrixFcbiilu2(solver_data, matrix_data, false, false);
        }
    }

Dmitry Bagaev's avatar
Dmitry Bagaev committed
51
52
    void SolverFCBIILU2::Setup(int *argc, char ***argv, SolverParameters &p) {
        SolverInitDataFcbiilu2(&solver_data, communicator, p.solverPrefix.c_str());
Dmitry Bagaev's avatar
Dmitry Bagaev committed
53
54
55
56
57
        solver_data->kovl = 0;    // number of overlap layers: kovl=0,1,2,...
        solver_data->tau = 3e-3;  // the ILU2 precision (for the submatrix factorization); tau=3e-3
        solver_data->eps = 1e-5;  // the residual precision: ||r|| < eps * ||b||; eps=1e-6
        solver_data->nit = 999;   // number of iterations permitted; nit=999
        solver_data->msglev = 2;  // messages level; msglev=0 for silent; msglev=1 to output solution statistics
Dmitry Bagaev's avatar
Dmitry Bagaev committed
58
59
60
        SolverInitializeFcbiilu2(solver_data, argc, argv, p.internalFile.c_str());
        for (parameters_iterator_t parameter = p.parameters.begin(); parameter < p.parameters.end(); parameter++) {
            this->SetParameter((*parameter).first, (*parameter).second);
Dmitry Bagaev's avatar
Dmitry Bagaev committed
61
        }
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
    }

    void SolverFCBIILU2::SetMatrix(Sparse::Matrix &A, bool ModifiedPattern, bool OldPreconditioner) {
        bool modified_pattern = ModifiedPattern;
        //~ if( A.comm != comm ) throw DifferentCommunicatorInSolver;
        if (matrix_data == NULL) {
            MatrixInitDataFcbiilu2(&matrix_data, A.GetCommunicator(), A.GetName().c_str());
            modified_pattern = true;
        }
        if (modified_pattern) {
            global_size = local_size = A.Size();

            MatrixDestroyDataFcbiilu2(&matrix_data);
            MatrixInitDataFcbiilu2(&matrix_data, A.GetCommunicator(), A.GetName().c_str());
            INMOST_DATA_ENUM_TYPE nnz = 0, k = 0, q = 1, shift = 1;
            int nproc, myid;
#if defined(USE_MPI)
            MPI_Comm_size(A.GetCommunicator(), &nproc);
            MPI_Comm_rank(A.GetCommunicator(), &myid);
#else
            nproc = 1;
Dmitry Bagaev's avatar
Dmitry Bagaev committed
83
            myid = 0;
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
#endif
            int *ibl = (int *) malloc(sizeof(int) * (nproc + 1));
            ibl[0] = 0;
            int n = A.Size();
#if defined(USE_MPI)
            INMOST_DATA_ENUM_TYPE mbeg, mend;
            A.GetInterval(mbeg, mend);
            n = mend - mbeg;
            int block_end = mend;
            MPI_Allgather(&block_end, 1, MPI_INT, &ibl[1], 1, MPI_INT, A.GetCommunicator());
#else
            ibl[1] = n;
#endif
            int *ia = (int *) malloc(sizeof(int) * (n + 1));
            for (Sparse::Matrix::iterator it = A.Begin(); it != A.End(); it++) nnz += it->Size();
            int *ja = (int *) malloc(sizeof(int) * nnz);
            double *values = (double *) malloc(sizeof(double) * nnz);
            ia[0] = shift;
            for (Sparse::Matrix::iterator it = A.Begin(); it != A.End(); it++) {
                for (Sparse::Row::iterator jt = it->Begin(); jt != it->End(); jt++) {
                    ja[k] = jt->first + 1;
                    values[k] = jt->second;
                    //std::cout<<"# q="<<q<<" k="<<k<<" ja="<<ja[k]<<" a="<<values[k]<<std::endl;//db!
                    k++;
                }
                shift += it->Size();
                ia[q++] = shift;
            }
            MatrixFillFcbiilu2(matrix_data, n, nproc, ibl, ia, ja, values);
        } else {
            INMOST_DATA_ENUM_TYPE nnz = 0, k = 0;
            for (Sparse::Matrix::iterator it = A.Begin(); it != A.End(); it++) nnz += it->Size();
            double *values = (double *) malloc(sizeof(double) * nnz);
            k = 0;
            for (Sparse::Matrix::iterator it = A.Begin(); it != A.End(); it++)
                for (Sparse::Row::iterator jt = it->Begin(); jt != it->End(); jt++)
                    values[k++] = jt->second;
            MatrixFillValuesFcbiilu2(matrix_data, values);
        }
        MatrixFinalizeFcbiilu2(matrix_data);
        SolverSetMatrixFcbiilu2(solver_data, matrix_data, modified_pattern, OldPreconditioner);
    }

    bool SolverFCBIILU2::Solve(INMOST::Sparse::Vector &RHS, INMOST::Sparse::Vector &SOL) {
        INMOST_DATA_ENUM_TYPE vbeg, vend;
        RHS.GetInterval(vbeg, vend);

131
        vector_fcbiilu2 *rhs_data = NULL;
132
133
134
        VectorInitDataFcbiilu2(&rhs_data, RHS.GetCommunicator(), RHS.GetName().c_str());
        VectorPreallocateFcbiilu2(rhs_data, local_size);

135
        vector_fcbiilu2 *solution_data = NULL;
136
137
138
139
140
141
142
143
144
        VectorInitDataFcbiilu2(&solution_data, SOL.GetCommunicator(), SOL.GetName().c_str());
        VectorPreallocateFcbiilu2(solution_data, local_size);
        VectorFillFcbiilu2(rhs_data, &RHS[vbeg]);
        VectorFinalizeFcbiilu2(rhs_data);

        VectorFillFcbiilu2(solution_data, &SOL[vbeg]);
        VectorFinalizeFcbiilu2(solution_data);
        bool result = SolverSolveFcbiilu2(solver_data, rhs_data, solution_data);
        if (result) VectorLoadFcbiilu2(solution_data, &SOL[vbeg]);
Dmitry Bagaev's avatar
Dmitry Bagaev committed
145
        iter_time = solver_data->dstat[9];
146
        time_prec = solver_data->dstat[7];
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
        return result;
    }

    bool SolverFCBIILU2::Clear() {
        if (matrix_data != NULL) {
            MatrixDestroyDataFcbiilu2(&matrix_data);
        }
        SolverDestroyDataFcbiilu2(&solver_data);
        return true;
    }

    bool SolverFCBIILU2::isMatrixSet() {
        return matrix_data != NULL;
    }

Dmitry Bagaev's avatar
Dmitry Bagaev committed
162
    std::string SolverFCBIILU2::GetParameter(std::string name) const {
Dmitry Bagaev's avatar
Dmitry Bagaev committed
163
164
165
166
167
168
        if (name == "time_prec") return INMOST::to_string(time_prec);
        if (name == "time_iter") return INMOST::to_string(iter_time);
        if (name == "time_total") return INMOST::to_string(time_prec + iter_time);
        if (name == "prec_density") return INMOST::to_string(solver_data->dstat[0]);
        if (name == "pivot_mod") return INMOST::to_string(solver_data->istat[0]);
        std::cout << "Parameter " << name << " is unknown" << std::endl;
Dmitry Bagaev's avatar
Dmitry Bagaev committed
169
170
171
172
        return "";
    }

    void SolverFCBIILU2::SetParameter(std::string name, std::string value) {
Dmitry Bagaev's avatar
Dmitry Bagaev committed
173
174
175
176
177
178
179
        const char *val = value.c_str();
        if (name == "kovl") solver_data->kovl = atoi(val);
        else if (name == "tau") solver_data->tau = atof(val);
        else if (name == "eps") solver_data->eps = atof(val);
        else if (name == "nit") solver_data->nit = atoi(val);
        else if (name == "msglev") solver_data->msglev = atoi(val);
        else std::cout << "Parameter " << name << " is unknown" << std::endl;
Dmitry Bagaev's avatar
Dmitry Bagaev committed
180
181
    }

182
    const INMOST_DATA_ENUM_TYPE SolverFCBIILU2::Iterations() const {
Dmitry Bagaev's avatar
Dmitry Bagaev committed
183
        return static_cast<INMOST_DATA_ENUM_TYPE>(solver_data->ITER);
184
185
186
    }

    const INMOST_DATA_REAL_TYPE SolverFCBIILU2::Residual() const {
Dmitry Bagaev's avatar
Dmitry Bagaev committed
187
        return solver_data->RESID;
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
    }

    const std::string SolverFCBIILU2::ReturnReason() const {
        return "Unspecified for FCBIILU2";
    }

    const std::string SolverFCBIILU2::SolverName() const {
        return "fcbiilu2";
    }

    void SolverFCBIILU2::Finalize() {
        SolverFinalizeFcbiilu2();
    }

    SolverFCBIILU2::~SolverFCBIILU2() {
        this->Clear();
    }

206
}