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#!/usr/bin/env python3
# -*- mode: python -*-
#
# Copyright (c) 2016-2018 Weitian LI <weitian@aaronly.me>
# MIT license
"""
Simulate the low-frequency radio foregrounds for the 21cm EoR signal.
"""
import os
import sys
import argparse
import logging
import time
import fg21sim
from fg21sim.share import CONFIGS, COSMO
from fg21sim.utils import setup_logging
def main():
parser = argparse.ArgumentParser(
description="Simulate the radio foregrounds for 21cm EoR signal",
epilog="Set environment variable 'DEBUG_FG21SIM=1' to force debug!")
parser.add_argument("config", help="user configuration file")
parser.add_argument("-v", "--version", action="version",
version="%(prog)s: version "+fg21sim.__version__)
parser.add_argument("-l", "--log", dest="loglevel", default=None,
choices=["debug", "info", "warning",
"error", "critical"],
help="set the log level")
parser.add_argument("-L", "--logfile", default=None,
help="filename where to save the log messages")
parser.add_argument("-Q", "--quiet", action="store_true",
help="be quiet so do not log messages to screen")
args = parser.parse_args()
t1_start = time.perf_counter()
t2_start = time.process_time()
CONFIGS.read_userconfig(args.config)
if os.environ.get("DEBUG_FG21SIM"):
print("DEBUG: Current configurations:", CONFIGS._config,
sep="\n", file=sys.stderr)
CONFIGS.check_all()
log_stream = "" if args.quiet else None
setup_logging(dict_config=CONFIGS.logging,
level=args.loglevel,
stream=log_stream,
logfile=args.logfile)
tool = os.path.basename(sys.argv[0])
logger = logging.getLogger(tool)
logger.info("FG21sim: version %s" % fg21sim.__version__)
logger.info("COMMAND: {0}".format(" ".join(sys.argv)))
# Save/backup current configurations
configfile_dump = os.path.splitext(CONFIGS.userconfig)[0] + "_dump.conf"
CONFIGS.save(configfile_dump, clobber=True, backup=True)
logger.info("Saved current configurations to file: %s" % configfile_dump)
# Setup cosmology model
logger.info("Setup cosmology model with parameters from configs ...")
COSMO.setup(**CONFIGS.cosmology)
logger.info("Importing modules + Numba JIT, waiting ...")
from fg21sim.foregrounds import Foregrounds
fg = Foregrounds(CONFIGS)
fg.preprocess()
fg.simulate()
fg.postprocess()
t1_stop = time.perf_counter()
t2_stop = time.process_time()
logger.info("Elapsed time: %.1f [min]" % ((t1_stop-t1_start)/60))
logger.info("CPU process time: %.1f [min]" % ((t2_stop-t2_start)/60))
if __name__ == "__main__":
main()
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