Source code for pycbc

# Copyright (C) 2012  Alex Nitz, Josh Willis
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# Public License for more details.
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

# =============================================================================
#                                   Preamble
# =============================================================================
"""PyCBC contains a toolkit for CBC gravitational wave analysis
from __future__ import (absolute_import, print_function)
import subprocess, os, sys, tempfile, signal, warnings

# Filter annoying Cython warnings that serve no good purpose.
warnings.filterwarnings("ignore", message="numpy.dtype size changed")
warnings.filterwarnings("ignore", message="numpy.ufunc size changed")
import logging
import random
import string

    # This will fail when pycbc is imported during the build process,
    # before has been generated.
    from .version import git_hash
    from .version import version as pycbc_version
    git_hash = 'none'
    pycbc_version = 'none'

__version__ = pycbc_version

[docs]def init_logging(verbose=False, format='%(asctime)s %(message)s'): """Common utility for setting up logging in PyCBC. Installs a signal handler such that verbosity can be activated at run-time by sending a SIGUSR1 to the process. Parameters ---------- verbose : bool or int, optional What level to set the verbosity level to. Accepts either a boolean or an integer representing the level to set. If True/False will set to ``logging.INFO``/``logging.WARN``. For higher logging levels, pass an integer representing the level to set (see the ``logging`` module for details). Default is ``False`` (``logging.WARN``). format : str, optional The format to use for logging messages. """ def sig_handler(signum, frame): logger = logging.getLogger() log_level = logger.level if log_level == logging.DEBUG: log_level = logging.WARN else: log_level = logging.DEBUG logging.warn('Got signal %d, setting log level to %d', signum, log_level) logger.setLevel(log_level) signal.signal(signal.SIGUSR1, sig_handler) if not verbose: initial_level = logging.WARN elif int(verbose) == 1: initial_level = logging.INFO else: initial_level = int(verbose) logging.getLogger().setLevel(initial_level) logging.basicConfig(format=format, level=initial_level)
[docs]def makedir(path): """ Make the analysis directory path and any parent directories that don't already exist. Will do nothing if path already exists. """ if path is not None and not os.path.exists(path): os.makedirs(path)
# PyCBC-Specific Constants # Set the value we want any aligned memory calls to use # N.B.: *Not* all pycbc memory will be aligned to multiples # of this value PYCBC_ALIGNMENT = 32 # Dynamic range factor: a large constant for rescaling # GW strains. This is 2**69 rounded to 17 sig.fig. DYN_RANGE_FAC = 5.9029581035870565e+20 # String used to separate parameters in configuration file section headers. # This is used by the distributions and transforms modules VARARGS_DELIM = '+' # Check for optional components of the PyCBC Package try: # This is a crude check to make sure that the driver is installed try: loaded_modules = subprocess.Popen(['lsmod'], stdout=subprocess.PIPE).communicate()[0] loaded_modules = loaded_modules.decode() if 'nvidia' not in loaded_modules: raise ImportError("nvidia driver may not be installed correctly") except OSError: pass # Check that pycuda is installed and can talk to the driver import pycuda.driver as _pycudadrv HAVE_CUDA=True except ImportError: HAVE_CUDA=False # Check for MKL capability try: import pycbc.fft.mkl HAVE_MKL=True except ImportError: HAVE_MKL=False # Check for openmp suppport, currently we pressume it exists, unless on # platforms (mac) that are silly and don't use the standard gcc. if sys.platform == 'darwin': HAVE_OMP = False else: HAVE_OMP = True #
[docs]def random_string(stringLength=10): """Generate a random string of fixed length """ letters = string.ascii_lowercase return ''.join(random.choice(letters) for i in range(stringLength))