Source code for simple

#!/usr/bin/env python
# 12.01.2007, c
Solve partial differential equations given in a SfePy problem definition file.

Example problem definition files can be found in ``examples/`` directory of the
SfePy top-level directory. This script works with all the examples except those
in ``examples/standalone/``.

Both normal and parametric study runs are supported. A parametric study allows
repeated runs for varying some of the simulation parameters - see
``examples/diffusion/`` file.
from __future__ import print_function
from __future__ import absolute_import
from argparse import ArgumentParser, RawDescriptionHelpFormatter

import sfepy
from sfepy.base.base import output
from sfepy.base.conf import ProblemConf, get_standard_keywords
from sfepy.applications import PDESolverApp, EVPSolverApp

helps = {
    'automatically start debugger when an exception is raised',
    'conf' :
    'override problem description file items, written as python'
    ' dictionary without surrounding braces',
    'options' : 'override options item of problem description,'
    ' written as python dictionary without surrounding braces',
    'define' : 'pass given arguments written as python dictionary'
    ' without surrounding braces to define() function of problem description'
    ' file',
    'filename' :
    'basename of output file(s) [default: <basename of input file>]',
    'output_format' :
    'output file format, one of: {vtk, h5} [default: vtk]',
    'save_restart' :
    'if given, save restart files according to the given mode.',
    'load_restart' :
    'if given, load the given restart file',
    'log' :
    'log all messages to specified file (existing file will be overwritten!)',
    'quiet' :
    'do not print any messages to screen',
    'save_ebc' :
    'save a zero solution with applied EBCs (Dirichlet boundary conditions)',
    'save_ebc_nodes' :
    'save a zero solution with added non-zeros in EBC (Dirichlet boundary'
    ' conditions) nodes - scalar variables are shown using colors,'
    ' vector variables using arrows with non-zero components corresponding'
    ' to constrained components',
    'save_regions' :
    'save problem regions as meshes',
    'save_regions_as_groups' :
    'save problem regions in a single mesh but mark them by using different'
    ' element/node group numbers',
    'save_field_meshes' :
    'save meshes of problem fields (with extra DOF nodes)',
    'solve_not' :
    'do not solve (use in connection with --save-*)',
    'list' :
    'list data, what can be one of: {terms, solvers}',

[docs]def main(): parser = ArgumentParser(description=__doc__, formatter_class=RawDescriptionHelpFormatter) parser.add_argument('--version', action='version', version='%(prog)s ' + sfepy.__version__) parser.add_argument('--debug', action='store_true', dest='debug', default=False, help=helps['debug']) parser.add_argument('-c', '--conf', metavar='"key : value, ..."', action='store', dest='conf', type=str, default=None, help= helps['conf']) parser.add_argument('-O', '--options', metavar='"key : value, ..."', action='store', dest='app_options', type=str, default=None, help=helps['options']) parser.add_argument('-d', '--define', metavar='"key : value, ..."', action='store', dest='define_args', type=str, default=None, help=helps['define']) parser.add_argument('-o', metavar='filename', action='store', dest='output_filename_trunk', default=None, help=helps['filename']) parser.add_argument('--format', metavar='format', action='store', dest='output_format', default=None, help=helps['output_format']) parser.add_argument('--save-restart', metavar='mode', type=int, action='store', dest='save_restart', default=None, help=helps['save_restart']) parser.add_argument('--load-restart', metavar='filename', action='store', dest='load_restart', default=None, help=helps['load_restart']) parser.add_argument('--log', metavar='file', action='store', dest='log', default=None, help=helps['log']) parser.add_argument('-q', '--quiet', action='store_true', dest='quiet', default=False, help=helps['quiet']) parser.add_argument('--save-ebc', action='store_true', dest='save_ebc', default=False, help=helps['save_ebc']) parser.add_argument('--save-ebc-nodes', action='store_true', dest='save_ebc_nodes', default=False, help=helps['save_ebc_nodes']) parser.add_argument('--save-regions', action='store_true', dest='save_regions', default=False, help=helps['save_regions']) parser.add_argument('--save-regions-as-groups', action='store_true', dest='save_regions_as_groups', default=False, help=helps['save_regions_as_groups']) parser.add_argument('--save-field-meshes', action='store_true', dest='save_field_meshes', default=False, help=helps['save_field_meshes']) parser.add_argument('--solve-not', action='store_true', dest='solve_not', default=False, help=helps['solve_not']) group = parser.add_mutually_exclusive_group(required=True) group.add_argument('--list', metavar='what', action='store', dest='_list', default=None, help=helps['list']) group.add_argument('filename_in', nargs='?') options, petsc_opts = parser.parse_known_args() if options._list is not None: if options._list == 'terms': print_terms() elif options._list == 'solvers': print_solvers() return if options.debug: from sfepy.base.base import debug_on_error; debug_on_error() filename_in = options.filename_in output.set_output(filename=options.log, quiet=options.quiet, combined=options.log is not None) required, other = get_standard_keywords() if options.solve_not: required.remove('equations') required.remove('solver_[0-9]+|solvers') other.extend(['equations']) conf = ProblemConf.from_file_and_options(filename_in, options, required, other, define_args=options.define_args) opts = conf.options output_prefix = opts.get('output_prefix', 'sfepy:') opts.save_restart = options.save_restart opts.load_restart = options.load_restart if conf.options.get('evps') is None: app = PDESolverApp(conf, options, output_prefix) else: app = EVPSolverApp(conf, options, output_prefix) if hasattr(opts, 'parametric_hook'): # Parametric study. parametric_hook = conf.get_function(opts.parametric_hook) app.parametrize(parametric_hook) app()
if __name__ == '__main__': main()