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/* Copyright (C) 2005-2022 Massachusetts Institute of Technology
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2, or (at your option)
% any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software Foundation,
% Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <meep.hpp>
using namespace meep;
using std::complex;
double one(const vec &) { return 1.0; }
double targets(const vec &pt) {
const double r = sqrt(pt.x() * pt.x() + pt.y() * pt.y());
double dr = r;
while (dr > 1)
dr -= 1;
if (dr > 0.7001) return 12.0;
return 1.0;
}
#if MEEP_SINGLE
static const double tol = 1e-3, thresh = 1e-3;
#else
static const double tol = 1e-9, thresh = 1e-15;
#endif
int compare(double a, double b, const char *n) {
if (fabs(a - b) > fabs(b) * tol && fabs(b) > thresh) {
master_printf("%s differs by\t%g out of\t%g\n", n, a - b, b);
master_printf("This gives a fractional error of %g\n", fabs(a - b) / fabs(b));
return 0;
}
else { return 1; }
}
int compare_point(fields &f1, fields &f2, const vec &p) {
monitor_point m1, m_test;
f1.get_point(&m_test, p);
f2.get_point(&m1, p);
for (int i = 0; i < 10; i++) {
component c = (component)i;
if (f1.gv.has_field(c)) {
complex<double> v1 = m_test.get_component(c), v2 = m1.get_component(c);
if (abs(v1 - v2) > tol * abs(v2) && abs(v2) > thresh) {
master_printf("%s differs: %g %g out of %g %g\n", component_name(c), real(v2 - v1),
imag(v2 - v1), real(v2), imag(v2));
master_printf("This comes out to a fractional error of %g\n", abs(v1 - v2) / abs(v2));
master_printf("Right now I'm looking at %g %g %g, time %g\n", p.x(), p.y(), p.z(),
f1.time());
return 0;
}
}
}
return 1;
}
int approx_point(fields &f1, fields &f2, const vec &p) {
monitor_point m1, m_test;
f1.get_point(&m_test, p);
f2.get_point(&m1, p);
for (int i = 0; i < 10; i++) {
component c = (component)i;
if (f1.gv.has_field(c)) {
complex<double> v1 = m_test.get_component(c), v2 = m1.get_component(c);
if (abs(v1 - v2) > tol * abs(v2) && abs(v2) > thresh) {
master_printf("%s differs: %g %g out of %g %g\n", component_name(c), real(v2 - v1),
imag(v2 - v1), real(v2), imag(v2));
master_printf("This comes out to a fractional error of %g\n", abs(v1 - v2) / abs(v2));
master_printf("Right now I'm looking at %g %g %g, time %g\n", p.x(), p.y(), p.z(),
f1.time());
return 0;
}
}
}
return 1;
}
std::string structure_dump(structure *s, const std::string &filename_prefix,
const std::string &output_name) {
std::string filename = filename_prefix + "-structure-" + output_name;
s->dump(filename.c_str());
master_printf("Dumping structure: %s\n", filename.c_str());
return filename;
}
void structure_load(structure *s, const std::string &filename) {
master_printf("Loading structure: %s\n", filename.c_str());
s->load(filename.c_str());
}
std::string fields_dump(fields *f, const std::string &filename_prefix,
const std::string &output_name) {
std::string filename = filename_prefix + "-fields-" + output_name;
f->dump(filename.c_str());
master_printf("Dumping fields: %s\n", filename.c_str());
return filename;
}
void fields_load(fields *f, const std::string &filename) {
master_printf("Loading fields: %s\n", filename.c_str());
f->load(filename.c_str());
}
int test_metal(double eps(const vec &), int splitting, const char *tmpdir) {
double a = 10.0;
double ttot = 17.0;
grid_volume gv = vol3d(1.5, 0.5, 1.0, a);
structure s(gv, eps, no_pml(), identity(), splitting);
std::string filename_prefix = std::string(tmpdir) + "/test_metal_" + std::to_string(splitting);
std::string structure_filename = structure_dump(&s, filename_prefix, "original");
master_printf("Metal test using %d chunks...\n", splitting);
fields f(&s);
f.add_point_source(Ez, 0.8, 0.6, 0.0, 4.0, vec(1.299, 0.299, 0.401), 1.0);
while (f.time() < ttot)
f.step();
std::string fields_filename = fields_dump(&f, filename_prefix, "original");
structure s_load(gv, eps, no_pml(), identity(), splitting);
structure_load(&s_load, structure_filename);
fields f_load(&s_load);
f_load.add_point_source(Ez, 0.8, 0.6, 0.0, 4.0, vec(1.299, 0.299, 0.401), 1.0);
fields_load(&f_load, fields_filename);
if (!compare_point(f, f_load, vec(0.5, 0.5, 0.01))) return 0;
if (!compare_point(f, f_load, vec(0.46, 0.33, 0.33))) return 0;
if (!compare_point(f, f_load, vec(1.301, 0.301, 0.399))) return 0;
if (!compare(f.field_energy(), f_load.field_energy(), " total energy")) return 0;
if (!compare(f.electric_energy_in_box(gv.surroundings()),
f_load.electric_energy_in_box(gv.surroundings()), "electric energy"))
return 0;
if (!compare(f.magnetic_energy_in_box(gv.surroundings()),
f_load.magnetic_energy_in_box(gv.surroundings()), "magnetic energy"))
return 0;
return 1;
}
int test_periodic(double eps(const vec &), int splitting, const char *tmpdir) {
double a = 10.0;
double ttot = 17.0;
grid_volume gv = vol3d(1.5, 0.5, 1.0, a);
structure s(gv, eps, no_pml(), identity(), splitting);
std::string filename_prefix = std::string(tmpdir) + "/test_periodic_" + std::to_string(splitting);
std::string structure_filename = structure_dump(&s, filename_prefix, "original");
master_printf("Periodic test using %d chunks...\n", splitting);
fields f(&s);
f.use_bloch(vec(0.1, 0.7, 0.3));
f.add_point_source(Ez, 0.7, 2.5, 0.0, 4.0, vec(0.3, 0.25, 0.5), 1.0);
while (f.time() < ttot)
f.step();
std::string fields_filename = fields_dump(&f, filename_prefix, "original");
structure s_load(gv, eps, no_pml(), identity(), splitting);
structure_load(&s_load, structure_filename);
fields f_load(&s_load);
f_load.use_bloch(vec(0.1, 0.7, 0.3));
f_load.add_point_source(Ez, 0.7, 2.5, 0.0, 4.0, vec(0.3, 0.25, 0.5), 1.0);
fields_load(&f_load, fields_filename);
if (!compare_point(f, f_load, vec(0.5, 0.01, 0.5))) return 0;
if (!compare_point(f, f_load, vec(0.46, 0.33, 0.2))) return 0;
if (!compare_point(f, f_load, vec(1.0, 0.25, 0.301))) return 0;
if (!compare(f.field_energy(), f_load.field_energy(), " total energy")) return 0;
if (!compare(f.electric_energy_in_box(gv.surroundings()),
f_load.electric_energy_in_box(gv.surroundings()), "electric energy"))
return 0;
if (!compare(f.magnetic_energy_in_box(gv.surroundings()),
f_load.magnetic_energy_in_box(gv.surroundings()), "magnetic energy"))
return 0;
return 1;
}
int main(int argc, char **argv) {
initialize mpi(argc, argv);
verbosity = 0;
std::unique_ptr<const char[]> temp_dir(make_output_directory());
master_printf("Testing 3D dump/load: temp_dir = %s...\n", temp_dir.get());
for (int s = 2; s < 7; s++)
if (!test_periodic(targets, s, temp_dir.get())) abort("error in test_periodic targets\n");
for (int s = 2; s < 8; s++)
if (!test_metal(one, s, temp_dir.get())) abort("error in test_metal vacuum\n");
delete_directory(temp_dir.get());
return 0;
}
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