def test3(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) instance = Hermite(convert_nbody) instance.initialize_code() instance.parameters.epsilon_squared = 0.00001 | units.AU**2 instance.dt_dia = 5000 stars = datamodel.Stars(2) star1 = stars[0] star2 = stars[1] star1.mass = units.MSun(1.0) star1.position = units.AU(numpy.array((-1.0,0.0,0.0))) star1.velocity = units.AUd(numpy.array((0.0,0.0,0.0))) star1.radius = units.RSun(1.0) star2.mass = units.MSun(1.0) star2.position = units.AU(numpy.array((1.0,0.0,0.0))) star2.velocity = units.AUd(numpy.array((0.0,0.0,0.0))) star2.radius = units.RSun(100.0) instance.particles.add_particles(stars) for x in range(1,2000,10): instance.evolve_model(x | units.day) instance.particles.copy_values_of_all_attributes_to(stars) stars.savepoint() instance.stop()
def test3(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) instance = Hermite(convert_nbody) instance.initialize_code() instance.parameters.epsilon_squared = 0.00001 | units.AU**2 instance.dt_dia = 5000 stars = datamodel.Stars(2) star1 = stars[0] star2 = stars[1] star1.mass = units.MSun(1.0) star1.position = units.AU(numpy.array((-1.0, 0.0, 0.0))) star1.velocity = units.AUd(numpy.array((0.0, 0.0, 0.0))) star1.radius = units.RSun(1.0) star2.mass = units.MSun(1.0) star2.position = units.AU(numpy.array((1.0, 0.0, 0.0))) star2.velocity = units.AUd(numpy.array((0.0, 0.0, 0.0))) star2.radius = units.RSun(100.0) instance.particles.add_particles(stars) for x in range(1, 2000, 10): instance.evolve_model(x | units.day) instance.particles.copy_values_of_all_attributes_to(stars) stars.savepoint() instance.stop()
def test1(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) hermite = Hermite(convert_nbody) hermite.initialize_code() hermite.parameters.epsilon_squared = 0.0 | units.AU**2 hermite.parameters.end_time_accuracy_factor = 0.0 hermite.dt_dia = 5000 stars = self.new_system_of_sun_and_earth() earth = stars[1] hermite.particles.add_particles(stars) hermite.evolve_model(365.0 | units.day) hermite.particles.copy_values_of_all_attributes_to(stars) position_at_start = earth.position.value_in(units.AU)[0] position_after_full_rotation = earth.position.value_in(units.AU)[0] self.assertAlmostRelativeEqual(position_at_start, position_after_full_rotation, 6) hermite.evolve_model(365.0 + (365.0 / 2) | units.day) hermite.particles.copy_values_of_all_attributes_to(stars) position_after_half_a_rotation = earth.position.value_in(units.AU)[0] self.assertAlmostRelativeEqual(-position_at_start, position_after_half_a_rotation, 3) hermite.evolve_model(365.0 + (365.0 / 2) + (365.0 / 4) | units.day) hermite.particles.copy_values_of_all_attributes_to(stars) position_after_half_a_rotation = earth.position.value_in(units.AU)[1] self.assertAlmostRelativeEqual(-position_at_start, position_after_half_a_rotation, 3) hermite.cleanup_code() hermite.stop()
def test2(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) instance = Hermite(convert_nbody) instance.initialize_code() instance.parameters.epsilon_squared = 0.0 | units.AU**2 instance.dt_dia = 5000 stars = self.new_system_of_sun_and_earth() earth = stars[1] instance.particles.add_particles(stars) for x in range(1, 500, 10): instance.evolve_model(x | units.day) instance.particles.copy_values_of_all_attributes_to(stars) stars.savepoint() if HAS_MATPLOTLIB: figure = pyplot.figure() plot = figure.add_subplot(1,1,1) x_points = earth.get_timeline_of_attribute("x") y_points = earth.get_timeline_of_attribute("y") x_points_in_AU = map(lambda (t,x) : x.value_in(units.AU), x_points) y_points_in_AU = map(lambda (t,x) : x.value_in(units.AU), y_points) plot.scatter(x_points_in_AU,y_points_in_AU, color = "b", marker = 'o') plot.set_xlim(-1.5, 1.5) plot.set_ylim(-1.5, 1.5) test_results_path = self.get_path_to_results() output_file = os.path.join(test_results_path, "hermite-earth-sun2.svg") figure.savefig(output_file) instance.cleanup_code() instance.stop()
def test2(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) bhtree = BHTree(convert_nbody) bhtree.initialize_code() bhtree.eps2_for_gravity = 0.001 bhtree_particles = self.new_system_sun_and_earth() bhtree.particles.add_particles(bhtree_particles) if bhtree.legacy_interface.channel_type == 'mpi': from mpi4py import MPI if not MPI.Query_thread() == MPI.THREAD_MULTIPLE: bhtree.stop() self.skip("can only test parallel with multiple thread support in mpi implementation") hermite = Hermite(convert_nbody) hermite.dt_dia = 5000 hermite.commit_parameters() hermite_particles = self.new_system_sun_and_earth() hermite.particles.add_particles(hermite_particles) thread1 = threading.Thread(target = self.evolve_model_unit_day, args = (bhtree, bhtree_particles, 10)) thread2 = threading.Thread(target = self.evolve_model_unit_day, args = (hermite, hermite_particles, 10)) thread1.start() thread2.start() thread1.join() thread2.join() if HAS_MATPLOTLIB: figure = pyplot.figure() plot = figure.add_subplot(1,1,1) earth = bhtree_particles[1] x_points = earth.get_timeline_of_attribute("x") y_points = earth.get_timeline_of_attribute("y") x_points_in_AU = map(lambda (t,x) : x.value_in(units.AU), x_points) y_points_in_AU = map(lambda (t,x) : x.value_in(units.AU), y_points) plot.scatter(x_points_in_AU,y_points_in_AU, color = "b", marker = 'o') earth = hermite_particles[1] x_points = earth.get_timeline_of_attribute("x") y_points = earth.get_timeline_of_attribute("y") x_points_in_AU = map(lambda (t,x) : x.value_in(units.AU), x_points) y_points_in_AU = map(lambda (t,x) : x.value_in(units.AU), y_points) plot.scatter(x_points_in_AU,y_points_in_AU, color = "g", marker = 'o') plot.set_xlim(-1.5, 1.5) plot.set_ylim(-1.5, 1.5) test_results_path = self.get_path_to_results() output_file = os.path.join(test_results_path, "parallel-earth-sun.svg") figure.savefig(output_file) bhtree.stop() hermite.stop() bhtree.stop()
def test2(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) bhtree = BHTree(convert_nbody) bhtree.initialize_code() bhtree.eps2_for_gravity = 0.001 bhtree_particles = self.new_system_sun_and_earth() bhtree.particles.add_particles(bhtree_particles) if bhtree.legacy_interface.channel_type == 'mpi': from mpi4py import MPI if not MPI.Query_thread() == MPI.THREAD_MULTIPLE: bhtree.stop() self.skip( "can only test parallel with multiple thread support in mpi implementation" ) hermite = Hermite(convert_nbody) hermite.dt_dia = 5000 hermite.commit_parameters() hermite_particles = self.new_system_sun_and_earth() hermite.particles.add_particles(hermite_particles) thread1 = threading.Thread(target=self.evolve_model_unit_day, args=(bhtree, bhtree_particles, 10)) thread2 = threading.Thread(target=self.evolve_model_unit_day, args=(hermite, hermite_particles, 10)) thread1.start() thread2.start() thread1.join() thread2.join() if HAS_MATPLOTLIB: figure = pyplot.figure() plot = figure.add_subplot(1, 1, 1) earth = bhtree_particles[1] x_points = earth.get_timeline_of_attribute("x") y_points = earth.get_timeline_of_attribute("y") x_points_in_AU = map(lambda (t, x): x.value_in(units.AU), x_points) y_points_in_AU = map(lambda (t, x): x.value_in(units.AU), y_points) plot.scatter(x_points_in_AU, y_points_in_AU, color="b", marker='o') earth = hermite_particles[1] x_points = earth.get_timeline_of_attribute("x") y_points = earth.get_timeline_of_attribute("y") x_points_in_AU = map(lambda (t, x): x.value_in(units.AU), x_points) y_points_in_AU = map(lambda (t, x): x.value_in(units.AU), y_points) plot.scatter(x_points_in_AU, y_points_in_AU, color="g", marker='o') plot.set_xlim(-1.5, 1.5) plot.set_ylim(-1.5, 1.5) test_results_path = self.get_path_to_results() output_file = os.path.join(test_results_path, "parallel-earth-sun.svg") figure.savefig(output_file) bhtree.stop() hermite.stop() bhtree.stop()