forked from moebiusband/NuSiF-Solver
141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/*
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* Copyright (C) NHR@FAU, University Erlangen-Nuremberg.
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* All rights reserved.
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "allocate.h"
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#include "discretization.h"
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#include "parameter.h"
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#include "progress.h"
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#include "solver.h"
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#include "timing.h"
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#include "vtkWriter.h"
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int main(int argc, char** argv)
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{
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double timeStart, timeStop;
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Parameter p;
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Solver s;
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Discretization d;
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commInit(&d.comm, argc, argv);
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initParameter(&p);
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FILE* fp;
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if (commIsMaster(&d.comm)) fp = initResidualWriter();
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if (argc != 2) {
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printf("Usage: %s <configFile>\n", argv[0]);
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exit(EXIT_SUCCESS);
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}
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readParameter(&p, argv[1]);
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commPartition(&d.comm, p.kmax, p.jmax, p.imax);
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if (commIsMaster(&d.comm)) {
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printParameter(&p);
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}
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initDiscretization(&d, &p);
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initSolver(&s, &d, &p);
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#ifndef VERBOSE
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initProgress(d.te);
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#endif
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double tau = d.tau;
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double te = d.te;
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double t = 0.0;
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int nt = 0;
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double res = 0.0;
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timeStart = getTimeStamp();
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while (t <= te) {
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if (tau > 0.0) computeTimestep(&d);
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setBoundaryConditions(&d);
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setSpecialBoundaryCondition(&d);
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computeFG(&d);
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computeRHS(&d);
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if (nt % 100 == 0) normalizePressure(&d);
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res = solve(&s, d.p, d.rhs);
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adaptUV(&d);
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if (commIsMaster(&d.comm)) writeResidual(fp, t, res);
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t += d.dt;
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nt++;
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#ifdef VERBOSE
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if (commIsMaster(s.comm)) {
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printf("TIME %f , TIMESTEP %f\n", t, d.dt);
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}
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#else
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printProgress(t);
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#endif
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}
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timeStop = getTimeStamp();
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#ifndef VERBOSE
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stopProgress();
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#endif
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if (commIsMaster(s.comm)) {
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printf("Solution took %.2fs\n", timeStop - timeStart);
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}
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timeStart = getTimeStamp();
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#ifdef _VTK_WRITER_MPI
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VtkOptions opts = { .grid = s.grid, .comm = s.comm };
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vtkOpen(&opts, s.problem);
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vtkScalar(&opts, "pressure", d.p);
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vtkVector(&opts, "velocity", (VtkVector) { d.u, d.v, d.w });
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vtkClose(&opts);
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#else
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if (commIsMaster(&d.comm)) fclose(fp);
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double *pg, *ug, *vg, *wg;
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if (commIsMaster(s.comm)) {
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size_t bytesize = s.grid->imax * s.grid->jmax * s.grid->kmax * sizeof(double);
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pg = allocate(64, bytesize);
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ug = allocate(64, bytesize);
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vg = allocate(64, bytesize);
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wg = allocate(64, bytesize);
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}
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commCollectResult(s.comm,
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ug,
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vg,
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wg,
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pg,
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d.u,
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d.v,
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d.w,
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d.p,
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s.grid->kmax,
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s.grid->jmax,
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s.grid->imax);
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if (commIsMaster(s.comm)) {
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VtkOptions opts = { .grid = s.grid };
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vtkOpen(&opts, s.problem);
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vtkScalar(&opts, "pressure", pg);
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vtkVector(&opts, "velocity", (VtkVector) { ug, vg, wg });
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vtkClose(&opts);
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}
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#endif
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timeStop = getTimeStamp();
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if (commIsMaster(s.comm)) {
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printf("Result output took %.2fs\n", timeStop - timeStart);
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}
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commFinalize(s.comm);
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return EXIT_SUCCESS;
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}
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