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_helper.py
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# -*- mode:python; coding: utf-8 -*-
# @file
# LICENSE
#
# Copyright (©) 2016-2021 EPFL (École Polytechnique Fédérale de Lausanne),
# Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
"""
Helper functions for dumpers
"""
from functools import wraps
from pathlib import Path
import numpy as np
from .. import model_type, type_traits, mpi
__all__ = ["step_dump", "directory_dump"]
_basic_types = [t for t, trait in type_traits.items() if trait.components == 1]
def _is_surface_field(field, model):
bn = model.boundary_shape
# Testing works for both local and global fields
return list(field.shape[:len(bn)]) == bn \
or list(field.shape[:len(bn)]) == mpi.global_shape(bn)
def local_slice(field, model):
n = model.shape
bn = model.boundary_shape
gshape = mpi.global_shape(bn)
offsets = np.zeros_like(gshape)
offsets[0] = mpi.local_offset(gshape)
if not _is_surface_field(field, model) and len(n) > len(bn):
gshape = [n[0]] + gshape
offsets = np.concatenate(([0], offsets))
shape = bn if _is_surface_field(field, model) else n
if len(field.shape) > len(shape):
shape += field.shape[len(shape):]
def sgen(pair):
offset, size = pair
return slice(offset, offset + size, None)
def sgen_basic(pair):
offset, size = pair
return slice(offset, offset + size)
slice_gen = sgen_basic if model_type in _basic_types else sgen
return tuple(map(slice_gen, zip(offsets, shape)))
def step_dump(cls):
"""
Decorator for dumper with counter for steps
"""
orig_init = cls.__init__
orig_dump = cls.dump
@wraps(cls.__init__)
def __init__(obj, *args, **kwargs):
orig_init(obj, *args, **kwargs)
obj.count = 0
def postfix(obj):
return "_{:04d}".format(obj.count)
@wraps(cls.dump)
def dump(obj, *args, **kwargs):
orig_dump(obj, *args, **kwargs)
obj.count += 1
cls.__init__ = __init__
cls.dump = dump
cls.postfix = property(postfix)
return cls
def directory_dump(directory=""):
"Decorator for dumper in a directory"
directory = Path(directory)
def actual_decorator(cls):
orig_dump = cls.dump
orig_filepath = cls.file_path.fget
@wraps(cls.dump)
def dump(obj, *args, **kwargs):
if mpi.rank() == 0:
directory.mkdir(parents=True, exist_ok=True)
orig_dump(obj, *args, **kwargs)
@wraps(cls.file_path.fget)
def file_path(obj):
return str(directory / orig_filepath(obj))
cls.dump = dump
cls.file_path = property(file_path)
return cls
return actual_decorator
def hdf5toVTK(inpath, outname):
"Convert HDF5 dump of a model to VTK"
import h5py as h5 # noqa
from .. import ModelFactory # noqa
from . import UVWDumper # noqa
type_translate = {
'model_type.basic_1d': model_type.basic_1d,
'model_type.basic_2d': model_type.basic_2d,
'model_type.surface_1d': model_type.surface_1d,
'model_type.surface_2d': model_type.surface_2d,
'model_type.volume_1d': model_type.volume_1d,
'model_type.volume_2d': model_type.volume_2d,
}
with h5.File(inpath, 'r') as h5file:
model_t = h5file.attrs['model_type']
system_size = list(h5file.attrs['system_size'])
n = list(h5file.attrs['discretization'])
model = ModelFactory.createModel(type_translate[model_t],
system_size, n)
fields = []
for field in h5file:
model.registerField(field, h5file[field][:])
fields.append(field)
uvw_dumper = UVWDumper(outname, *fields)
uvw_dumper << model

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