def test8(self): particles = datamodel.Particles(6) particles.mass = nbody_system.mass.new_quantity(list(range(1, 7))) particles.radius = 0.00001 | nbody_system.length particles.position = [[-1.0, 0.0, 0.0], [1.0, 0.0, 0.0], [0.0, -1.0, 0.0], [0.0, 1.0, 0.0], [0.0, 0.0, -1.0], [0.0, 0.0, 1.0] ] | nbody_system.length particles.velocity = [[0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [ 0.0, 0.0, 0.0 ], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0] ] | nbody_system.speed for current_mode in ['g6lib', 'gpu', 'grape']: try: instance = PhiGRAPE(mode=current_mode) except: print("Running PhiGRAPE with mode=" + current_mode, "was unsuccessful.") else: print("Running PhiGRAPE with mode=" + current_mode + "...", end=' ') instance.initialize_code() instance.particles.add_particles(particles) instance.commit_particles() instance.evolve_model(0.1 | nbody_system.time) instance.cleanup_code() instance.stop() print("ok")
def test1(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) instance = PhiGRAPE(convert_nbody, **default_test_options)#, debugger="xterm") instance.initialize_code() instance.parameters.set_defaults() instance.parameters.initial_timestep_parameter = 0.001 instance.parameters.timestep_parameter = 0.001 stars = self.new_system_of_sun_and_earth() earth = stars[1] instance.particles.add_particles(stars) instance.commit_particles() position_at_start = earth.position.value_in(units.AU)[0] instance.evolve_model(365 | units.day) instance.particles.copy_values_of_all_attributes_to(stars) position_after_full_rotation = earth.position.value_in(units.AU)[0] self.assertAlmostEqual(position_at_start, position_after_full_rotation, 2) instance.evolve_model(365.0 + (365.0 / 2) | units.day) instance.particles.copy_values_of_all_attributes_to(stars) position_after_half_a_rotation = earth.position.value_in(units.AU)[0] self.assertAlmostEqual(-position_at_start, position_after_half_a_rotation, 2) instance.evolve_model(365.0 + (365.0 / 2) + (365.0 / 4) | units.day) instance.particles.copy_values_of_all_attributes_to(stars) position_after_half_a_rotation = earth.position.value_in(units.AU)[1] self.assertAlmostEqual(-position_at_start, position_after_half_a_rotation, 3) instance.cleanup_code() instance.stop()
def test16(self): instance = PhiGRAPE(number_of_workers=2, **default_test_options) instance.initialize_code() instance.parameters.set_defaults() print(1) particles = datamodel.Particles(2) particles.x = [-1.0, 1.0] | nbody_system.length particles.y = 0 | nbody_system.length particles.z = 0 | nbody_system.length particles.radius = 0.005 | nbody_system.length particles.vx = 0 | nbody_system.speed particles.vy = 0 | nbody_system.speed particles.vz = 0 | nbody_system.speed particles.mass = [1.0, 0.5] | nbody_system.mass instance.particles.add_particles(particles) instance.commit_particles() instance.evolve_model(0.01 | nbody_system.time) instance.particles.copy_values_of_all_attributes_to(particles) print(instance.particles.position.x) self.assertAlmostRelativeEquals(instance.particles[0].position.x, -0.999984741095 | nbody_system.length, 8) self.assertAlmostRelativeEquals(instance.particles[1].position.x, 0.999969482189 | nbody_system.length, 8) instance.evolve_model(0.10 | nbody_system.time) instance.particles.copy_values_of_all_attributes_to(particles) print(instance.particles.position.x) self.assertAlmostRelativeEquals(instance.particles[0].position.x, -0.999022960148 | nbody_system.length, 8) self.assertAlmostRelativeEquals(instance.particles[1].position.x, 0.998045920305 | nbody_system.length, 8) instance.evolve_model(0.50 | nbody_system.time) instance.particles.copy_values_of_all_attributes_to(particles) print(instance.particles.position.x) self.assertAlmostRelativeEquals(instance.particles[0].position.x, -0.984250788742 | nbody_system.length, 8) self.assertAlmostRelativeEquals(instance.particles[1].position.x, 0.968501583383 | nbody_system.length, 8) instance.cleanup_code() instance.stop()
def test15(self): instance = PhiGRAPE(number_of_workers=2, **default_test_options) #, redirection = "none") instance.initialize_code() instance.parameters.set_defaults() print(1) particles = datamodel.Particles(2) particles.x = [-1.0, 1.0] | nbody_system.length particles.y = 0 | nbody_system.length particles.z = 0 | nbody_system.length particles.radius = 0.005 | nbody_system.length particles.vx = 0 | nbody_system.speed particles.vy = 0 | nbody_system.speed particles.vz = 0 | nbody_system.speed particles.mass = 1.0 | nbody_system.mass instance.particles.add_particles(particles) instance.commit_particles() instance.evolve_model(0.01 | nbody_system.time) instance.particles.copy_values_of_all_attributes_to(particles) print(instance.particles.position.x) self.assertEqual(instance.particles[0].position.x, -instance.particles[1].position.x) self.assertAlmostRelativeEquals(instance.particles[1].position.x, 0.999969482111 | nbody_system.length, 6) instance.evolve_model(0.10 | nbody_system.time) instance.particles.copy_values_of_all_attributes_to(particles) print(instance.particles.position.x) self.assertEqual(instance.particles[0].position.x, -instance.particles[1].position.x) self.assertAlmostRelativeEquals(instance.particles[1].position.x, 0.99804560161 | nbody_system.length, 6) instance.evolve_model(0.50 | nbody_system.time) instance.particles.copy_values_of_all_attributes_to(particles) print(instance.particles.position.x) self.assertEqual(instance.particles[0].position.x, -instance.particles[1].position.x) self.assertAlmostRelativeEquals(instance.particles[1].position.x, 0.968416814302 | nbody_system.length, 6) instance.cleanup_code() instance.stop()
def test2(self): convert_nbody = nbody_system.nbody_to_si(1.0 | units.MSun, 149.5e6 | units.km) instance = PhiGRAPE(convert_nbody, **default_test_options) instance.initialize_code() instance.parameters.set_defaults() stars = self.new_system_of_sun_and_earth() earth = stars[1] instance.particles.add_particles(stars) instance.commit_particles() for x in range(1, 365, 30): 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 = [t_x[1].value_in(units.AU) for t_x in x_points] y_points_in_AU = [t_x1[1].value_in(units.AU) for t_x1 in 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, "phiGRAPE-earth-sun2.svg") figure.savefig(output_file) instance.cleanup_code() instance.stop()