run_sim.py 3.62 KB
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from ObservationSim.ObservationSim import Observation
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from ObservationSim._util import parse_args, make_run_dirs, generate_pointing_list
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from pkg_resources import get_distribution
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import os
import yaml
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import shutil
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import datetime
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import importlib
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import gc
gc.enable()

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def run_sim():
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    """
    Main method for simulation call.
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    Parameters
    ----------
    Catalog : Class
        a catalog class which is inherited from ObservationSim.MockObject.CatalogBase 
    
    Returns
    ----------
        None
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    """
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    # Get version of CSSTSim Package
    __version__ = get_distribution("CSSTSim").version

    # Get run datetime
    now = datetime.datetime.now()

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    args = parse_args()
    if args.config_dir is None:
        args.config_dir = ''
    args.config_dir = os.path.abspath(args.config_dir)
    args.config_file = os.path.join(args.config_dir, args.config_file)
    with open(args.config_file, "r") as stream:
        try:
            config = yaml.safe_load(stream)
            for key, value in config.items():
                print (key + " : " + str(value))
        except yaml.YAMLError as exc:
            print(exc)

    # Overwrite the data and working directories
    # if they are specified by the command line inputs
    if args.data_dir is not None:
        config['data_dir'] = args.data_dir
    if args.work_dir is not None:
        config['work_dir'] = args.work_dir

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    # Some default values
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    if "bias_16channel" not in config["ins_effects"]:
        config["ins_effects"]["bias_16channel"] = False
    if "gain_16channel" not in config["ins_effects"]:
        config["ins_effects"]["gain_16channel"] = False
    if "mag_sat_margin" not in config["obs_setting"]:
        config["obs_setting"]["mag_sat_margin"] = -2.5
    if "mag_lim_margin" not in config["obs_setting"]:
        config["obs_setting"]["mag_lim_margin"] = 1.0
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    # Generate lists pointings based on the input pointing list (or default 
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    # pointing RA, DEC) and "config["obs_setting"]["run_pointings"]".
    # "config['obs_setting']['np_cal']"" is the number of CAL pointings which will be 
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    # appended to the front.
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    # NOTE: the implementation of gerenating time_stamps is temporary.
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    pointing_list = generate_pointing_list(config=config, pointing_filename=config['obs_setting']['pointing_file'], data_dir=config['obs_setting']['pointing_dir'])
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    # Make the main output directories
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    run_dir = make_run_dirs(work_dir=config['work_dir'], run_name=config['run_name'], pointing_list=pointing_list)
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    # Copy the config file to output directory & Write Run metadata
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    shutil.copy(args.config_file, run_dir)
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    run_meta = os.path.join(run_dir, "run_metadata.yaml")
    with open(run_meta, "w") as config_out:
        config_out.write("\n")
        config_out.write("###############################################\n")
        config_out.write("CSSTSim_version: \"%s\"\n"%__version__)
        date_str = datetime.datetime.strftime(now, '%m/%d/%Y')
        time_str = datetime.datetime.strftime(now, '%H:%M:%S')
        config_out.write("Run_date: \"%s\"\n"%date_str)
        config_out.write("Run_time: \"%s\"\n"%time_str)
        config_out.write("###############################################\n")
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    # Initialize the simulation
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    catalog_module = importlib.import_module('Catalog.'+args.catalog)
    obs = Observation(config=config, Catalog=catalog_module.Catalog, work_dir=config['work_dir'], data_dir=config['data_dir'])
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    # Run simulation
    obs.runExposure_MPI_PointingList(
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        pointing_list=pointing_list,
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        use_mpi=config["run_option"]["use_mpi"],
        chips=config["obs_setting"]["run_chips"])

if __name__=='__main__':
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    run_sim()