void oskar_station_create_child_stations(oskar_Station* station,
int* status)
{
int i, type, location;
/* Check if safe to proceed. */
if (*status) return;
/* Check that the memory isn't already allocated. */
if (station->child)
{
*status = OSKAR_ERR_MEMORY_ALLOC_FAILURE;
return;
}
/* Allocate memory for child station array. */
station->child = (oskar_Station**) malloc(
station->num_elements * sizeof(oskar_Station*));
if (!station->child)
{
*status = OSKAR_ERR_MEMORY_ALLOC_FAILURE;
return;
}
/* Create and initialise each child station. */
type = oskar_station_precision(station);
location = oskar_station_mem_location(station);
for (i = 0; i < station->num_elements; ++i)
{
station->child[i] = oskar_station_create(type, location, 0, status);
}
}
oskar_Station* oskar_station_create_copy(const oskar_Station* src,
int location, int* status)
{
int i = 0;
oskar_Station* model = 0;
/* Check if safe to proceed. */
if (*status) return model;
/* Create the new model. */
model = oskar_station_create(oskar_station_precision(src), location,
oskar_station_num_elements(src), status);
/* Set meta-data. */
model->unique_id = src->unique_id;
model->precision = src->precision;
model->mem_location = location;
/* Copy common station parameters. */
model->station_type = src->station_type;
model->normalise_final_beam = src->normalise_final_beam;
model->lon_rad = src->lon_rad;
model->lat_rad = src->lat_rad;
model->alt_metres = src->alt_metres;
model->pm_x_rad = src->pm_x_rad;
model->pm_y_rad = src->pm_y_rad;
model->beam_lon_rad = src->beam_lon_rad;
model->beam_lat_rad = src->beam_lat_rad;
model->beam_coord_type = src->beam_coord_type;
oskar_mem_copy(model->noise_freq_hz, src->noise_freq_hz, status);
oskar_mem_copy(model->noise_rms_jy, src->noise_rms_jy, status);
/* Copy aperture array data, except num_element_types (done later). */
model->identical_children = src->identical_children;
model->num_elements = src->num_elements;
model->normalise_array_pattern = src->normalise_array_pattern;
model->enable_array_pattern = src->enable_array_pattern;
model->common_element_orientation = src->common_element_orientation;
model->array_is_3d = src->array_is_3d;
model->apply_element_errors = src->apply_element_errors;
model->apply_element_weight = src->apply_element_weight;
model->seed_time_variable_errors = src->seed_time_variable_errors;
model->num_permitted_beams = src->num_permitted_beams;
/* Copy Gaussian station beam data. */
model->gaussian_beam_fwhm_rad = src->gaussian_beam_fwhm_rad;
model->gaussian_beam_reference_freq_hz = src->gaussian_beam_reference_freq_hz;
/* Copy memory blocks. */
oskar_mem_copy(model->element_true_x_enu_metres,
src->element_true_x_enu_metres, status);
oskar_mem_copy(model->element_true_y_enu_metres,
src->element_true_y_enu_metres, status);
oskar_mem_copy(model->element_true_z_enu_metres,
src->element_true_z_enu_metres, status);
oskar_mem_copy(model->element_measured_x_enu_metres,
src->element_measured_x_enu_metres, status);
oskar_mem_copy(model->element_measured_y_enu_metres,
src->element_measured_y_enu_metres, status);
oskar_mem_copy(model->element_measured_z_enu_metres,
src->element_measured_z_enu_metres, status);
oskar_mem_copy(model->element_weight, src->element_weight, status);
oskar_mem_copy(model->element_gain, src->element_gain, status);
oskar_mem_copy(model->element_gain_error, src->element_gain_error, status);
oskar_mem_copy(model->element_phase_offset_rad,
src->element_phase_offset_rad, status);
oskar_mem_copy(model->element_phase_error_rad,
src->element_phase_error_rad, status);
oskar_mem_copy(model->element_x_alpha_cpu,
src->element_x_alpha_cpu, status);
oskar_mem_copy(model->element_x_beta_cpu,
src->element_x_beta_cpu, status);
oskar_mem_copy(model->element_x_gamma_cpu,
src->element_x_gamma_cpu, status);
oskar_mem_copy(model->element_y_alpha_cpu,
src->element_y_alpha_cpu, status);
oskar_mem_copy(model->element_y_beta_cpu,
src->element_y_beta_cpu, status);
oskar_mem_copy(model->element_y_gamma_cpu,
src->element_y_gamma_cpu, status);
oskar_mem_copy(model->element_types, src->element_types, status);
oskar_mem_copy(model->element_types_cpu, src->element_types_cpu, status);
oskar_mem_copy(model->element_mount_types_cpu, src->element_mount_types_cpu, status);
oskar_mem_copy(model->permitted_beam_az_rad, src->permitted_beam_az_rad, status);
oskar_mem_copy(model->permitted_beam_el_rad, src->permitted_beam_el_rad, status);
/* Copy element models, if set. */
if (oskar_station_has_element(src))
{
/* Ensure enough space for element model data. */
oskar_station_resize_element_types(model, src->num_element_types,
status);
/* Copy the element model data. */
for (i = 0; i < src->num_element_types; ++i)
{
oskar_element_copy(model->element[i], src->element[i], status);
}
}
/* Recursively copy child stations. */
if (oskar_station_has_child(src))
{
model->child = malloc(src->num_elements * sizeof(oskar_Station*));
if (!model->child)
{
*status = OSKAR_ERR_MEMORY_ALLOC_FAILURE;
return model;
}
for (i = 0; i < src->num_elements; ++i)
{
model->child[i] = oskar_station_create_copy(
oskar_station_child_const(src, i), location, status);
}
}
return model;
}
int benchmark(int num_elements, int num_directions, OpType op_type,
int loc, int precision, bool evaluate_2d, int niter, double& time_taken)
{
int status = 0;
// Create the timer.
oskar_Timer *tmr = oskar_timer_create(OSKAR_TIMER_CUDA);
oskar_Station* station = oskar_station_create(precision, loc,
num_elements, &status);
if (status) return status;
station->array_is_3d = (evaluate_2d) ? OSKAR_FALSE : OSKAR_TRUE;
oskar_Mem *x, *y, *z, *weights = 0, *beam = 0, *signal = 0;
x = oskar_mem_create(precision, loc, num_directions, &status);
y = oskar_mem_create(precision, loc, num_directions, &status);
z = oskar_mem_create(precision, loc, num_directions, &status);
if (status) return status;
if (op_type == O2C)
{
int type = precision | OSKAR_COMPLEX;
beam = oskar_mem_create(type, loc, num_directions, &status);
weights = oskar_mem_create(type, loc, num_elements, &status);
if (status) return status;
oskar_timer_start(tmr);
for (int i = 0; i < niter; ++i)
{
oskar_evaluate_array_pattern(beam, 2.0 * M_PI, station,
num_directions, x, y, z, weights, &status);
}
time_taken = oskar_timer_elapsed(tmr);
}
else if (op_type == C2C || op_type == M2M)
{
int type = precision | OSKAR_COMPLEX;
int num_signals = num_directions * num_elements;
weights = oskar_mem_create(type, loc, num_elements, &status);
if (op_type == C2C)
{
beam = oskar_mem_create(type, loc, num_directions, &status);
signal = oskar_mem_create(type, loc, num_signals, &status);
}
else
{
type |= OSKAR_MATRIX;
beam = oskar_mem_create(type, loc, num_directions, &status);
signal = oskar_mem_create(type, loc, num_signals, &status);
}
if (status) return status;
oskar_timer_start(tmr);
for (int i = 0; i < niter; ++i)
{
oskar_evaluate_array_pattern_hierarchical(beam, 2.0 * M_PI, station,
num_directions, x, y, z, signal, weights, &status);
}
time_taken = oskar_timer_elapsed(tmr);
}
// Destroy the timer.
oskar_timer_free(tmr);
// Free memory.
oskar_station_free(station, &status);
oskar_mem_free(x, &status);
oskar_mem_free(y, &status);
oskar_mem_free(z, &status);
oskar_mem_free(weights, &status);
oskar_mem_free(beam, &status);
oskar_mem_free(signal, &status);
return status;
}