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pyiron_ase.py
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pyiron_ase.py
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# coding: utf-8
# Copyright (c) Max-Planck-Institut für Eisenforschung GmbH - Computational Materials Design (CM) Department
# Distributed under the terms of "New BSD License", see the LICENSE file.
from ase import Atoms
from ase.constraints import dict2constraint
import copy
import importlib
import numpy as np
from pyiron_base import InteractiveBase
from pyiron.atomistics.job.interactive import GenericInteractiveOutput
try:
from ase.cell import Cell
except ImportError:
Cell = None
__author__ = "Jan Janssen"
__copyright__ = (
"Copyright 2020, Max-Planck-Institut für Eisenforschung GmbH - "
"Computational Materials Design (CM) Department"
)
__version__ = "1.0"
__maintainer__ = "Jan Janssen"
__email__ = "janssen@mpie.de"
__status__ = "development"
__date__ = "Sep 1, 2018"
class AseJob(InteractiveBase):
def __init__(self, project, job_name):
super(AseJob, self).__init__(project, job_name)
self.__name__ = "AseJob"
self.__version__ = (
None
) # Reset the version number to the executable is set automatically
self._structure = None
self.interactive_cache = {
"cells": [],
"energy_pot": [],
"energy_tot": [],
"forces": [],
"positions": [],
"steps": [],
"indices": [],
"time": [],
"volume": [],
}
self.output = GenericInteractiveOutput(job=self)
self._python_only_job = True
@staticmethod
def _cellfromdict(celldict):
if Cell is not None:
return Cell(**celldict)
else:
return celldict
def _todict(self):
atoms_dict = {
"symbols": self._structure.get_chemical_symbols(),
"positions": self._structure.get_positions(),
"pbc": self._structure.get_pbc(),
"celldisp": self._structure.get_celldisp(),
"constraint": [c.todict() for c in self._structure.constraints],
"info": copy.deepcopy(self._structure.info),
}
if Cell is not None:
atoms_dict["cell"] = self._structure.get_cell().todict()
else:
atoms_dict["cell"] = self._structure.get_cell()
if self._structure.has("tags"):
atoms_dict["tags"] = self._structure.get_tags()
if self._structure.has("masses"):
atoms_dict["masses"] = self._structure.get_masses()
if self._structure.has("momenta"):
atoms_dict["momenta"] = self._structure.get_momenta()
if self._structure.has("initial_magmoms"):
atoms_dict["magmoms"] = self._structure.get_initial_magnetic_moments()
if self._structure.has("initial_charges"):
atoms_dict["charges"] = self._structure.get_initial_charges()
if self._structure._calc is not None:
calculator_dict = self._structure._calc.todict()
calculator_dict["calculator_class"] = (
str(self._structure._calc.__class__).replace("'", " ").split()[1]
)
calculator_dict["label"] = self._structure._calc.label
atoms_dict["calculator"] = calculator_dict
return atoms_dict
def _fromdict(self, atoms_dict):
atoms_dict_copy = copy.deepcopy(atoms_dict)
if "calculator" in atoms_dict_copy.keys():
calculator_dict = atoms_dict_copy["calculator"]
calculator_class = calculator_dict["calculator_class"]
del calculator_dict["calculator_class"]
atoms_dict_copy["calculator"] = self._dict2calculator(
calculator_class, calculator_dict
)
if "constraint" in atoms_dict_copy.keys():
atoms_dict_copy["constraint"] = [
dict2constraint(const_dict)
for const_dict in atoms_dict_copy["constraint"]
]
atoms_dict_copy["cell"] = self._cellfromdict(celldict=atoms_dict_copy["cell"])
atoms = Atoms(**atoms_dict_copy)
if atoms.calc is not None:
atoms.calc.read(atoms.calc.label)
return atoms
@staticmethod
def _dict2calculator(class_path, class_dict):
module_loaded = importlib.import_module(".".join(class_path.split(".")[:-1]))
module_class = getattr(module_loaded, class_path.split(".")[-1])
return module_class(**class_dict)
@property
def structure(self):
return self._structure
@structure.setter
def structure(self, basis):
self._structure = basis
def to_hdf(self, hdf=None, group_name=None):
super(AseJob, self).to_hdf(hdf=hdf, group_name=group_name)
with self.project_hdf5.open("input") as hdf_input:
hdf_input["structure"] = self._todict()
def from_hdf(self, hdf=None, group_name=None):
super(AseJob, self).from_hdf(hdf=hdf, group_name=group_name)
with self.project_hdf5.open("input") as hdf_input:
self.structure = self._fromdict(hdf_input["structure"])
def run_static(self):
raise ValueError("ASEJob requires interactive mode.")
def run_if_interactive(self):
self.status.running = True
self._structure.calc.set_label(self.working_directory + "/")
self.structure.calc.calculate(self.structure)
self.interactive_collect()
def interactive_close(self):
self.status.collect = True
if (
len(list(self.interactive_cache.keys())) > 0
and len(self.interactive_cache[list(self.interactive_cache.keys())[0]]) != 0
):
self.interactive_flush(path="interactive")
with self.project_hdf5.open("output") as h5:
if "interactive" in h5.list_groups():
for key in h5["interactive"].list_nodes():
h5["generic/" + key] = h5["interactive/" + key]
self.status.finished = True
def interactive_forces_getter(self):
return self._structure.get_forces()
def interactive_energy_pot_getter(self):
return self._structure.get_potential_energy()
def interactive_energy_tot_getter(self):
return self._structure.get_potential_energy()
def interactive_indices_getter(self):
element_lst = sorted(list(set(self._structure.get_chemical_symbols())))
return np.array(
[element_lst.index(el) for el in self._structure.get_chemical_symbols()]
)
def interactive_positions_getter(self):
return self._structure.positions.copy()
def interactive_steps_getter(self):
return len(self.interactive_cache[list(self.interactive_cache.keys())[0]])
def interactive_time_getter(self):
return self.interactive_steps_getter()
def interactive_volume_getter(self):
return self._structure.get_volume()
def interactive_cells_getter(self):
return self._structure.cell.copy()
def interactive_collect(self):
if "cells" in self.interactive_cache.keys():
self.interactive_cache["cells"].append(self.interactive_cells_getter())
if "energy_pot" in self.interactive_cache.keys():
self.interactive_cache["energy_pot"].append(
self.interactive_energy_pot_getter()
)
if "energy_tot" in self.interactive_cache.keys():
self.interactive_cache["energy_tot"].append(
self.interactive_energy_tot_getter()
)
if "forces" in self.interactive_cache.keys():
self.interactive_cache["forces"].append(self.interactive_forces_getter())
if "positions" in self.interactive_cache.keys():
self.interactive_cache["positions"].append(
self.interactive_positions_getter()
)
if "pressures" in self.interactive_cache.keys():
self.interactive_cache["pressures"].append(
self.interactive_pressures_getter()
)
if "steps" in self.interactive_cache.keys():
self.interactive_cache["steps"].append(self.interactive_steps_getter())
if "temperatures" in self.interactive_cache.keys():
self.interactive_cache["temperatures"].append(
self.interactive_temperatures_getter()
)
if "time" in self.interactive_cache.keys():
self.interactive_cache["time"].append(self.interactive_time_getter())
if "indices" in self.interactive_cache.keys():
self.interactive_cache["indices"].append(self.interactive_indices_getter())
if "spin_constraints" in self.interactive_cache.keys():
self.interactive_cache["spin_constraints"].append(
self.interactive_spin_constraints_getter()
)
if "magnetic_forces" in self.interactive_cache.keys():
if np.any(self._structure_current.get_initial_magnetic_moments()):
self.interactive_cache["magnetic_forces"].append(
self.interactive_magnetic_forces_getter()
)
else:
del self.interactive_cache["magnetic_forces"]
if "unwrapped_positions" in self.interactive_cache.keys():
self.interactive_cache["unwrapped_positions"].append(
self.interactive_unwrapped_positions_getter()
)
if "volume" in self.interactive_cache.keys():
self.interactive_cache["volume"].append(self.interactive_volume_getter())
if (
len(list(self.interactive_cache.keys())) > 0
and len(self.interactive_cache[list(self.interactive_cache.keys())[0]])
% self._interactive_flush_frequency
== 0
):
self.interactive_flush(path="interactive")
class AseAdapter(object):
def __init__(self, ham, fast_mode=False):
self._ham = ham
self._fast_mode = fast_mode
if self._ham.server.run_mode.interactive and fast_mode:
self.interactive_cache = {
"velocities": [],
"energy_kin": [],
"momenta": [],
"positions": [],
"energy_tot": [],
"energy_pot": []
}
self._ham.run()
self._ham.interactive_cache = {}
elif self._ham.server.run_mode.interactive:
self.interactive_cache = {
"velocities": [],
"energy_kin": [],
"momenta": []
}
self.constraints = []
try:
self.arrays = {
"positions": self._ham.structure.positions.copy(),
"numbers": self._ham.structure.numbers,
}
except AttributeError:
self.arrays = {
"positions": self._ham.structure.positions.copy(),
"numbers": self._ham.structure.get_atomic_numbers(),
}
@property
def communicator(self):
return None
def get_masses(self):
return np.array(self._ham.structure.get_masses())
def get_positions(self):
return self.arrays["positions"]
def set_positions(self, positions):
self.arrays["positions"] = positions
def get_forces(self, md=True):
if self._fast_mode:
self._ham.interactive_positions_setter(self.arrays["positions"])
self.interactive_cache["positions"].append(self.arrays["positions"])
self._ham.interactive_execute()
self.interactive_cache["energy_pot"].append(self._ham.interactive_energy_pot_getter())
return np.array(self._ham.interactive_forces_getter())
else:
self._ham.structure.positions = self.arrays["positions"]
if self._ham.server.run_mode.interactive:
self._ham.run()
else:
self._ham.run(delete_existing_job=True)
return self._ham.output.forces[-1]
def interactive_close(self):
self._ham.interactive_store_in_cache(
"velocities", self.interactive_cache["velocities"]
)
self._ham.interactive_store_in_cache(
"energy_kin", self.interactive_cache["energy_kin"]
)
if self._fast_mode:
self._ham.interactive_store_in_cache(
"positions", self.interactive_cache["positions"]
)
self._ham.interactive_store_in_cache(
"energy_pot", self.interactive_cache["energy_pot"][::2]
)
self._ham.interactive_store_in_cache(
"energy_tot",
(
np.array(self.interactive_cache["energy_pot"][::2])
+ np.array(self.interactive_cache["energy_kin"])
).tolist(),
)
else:
self._ham.interactive_store_in_cache(
"energy_tot",
(
np.array(self._ham.output.energy_pot)[::2]
+ np.array(self.interactive_cache["energy_kin"])
).tolist(),
)
self._ham.interactive_close()
def get_number_of_atoms(self):
return self._ham.structure.get_number_of_atoms()
# ASE functions
def get_kinetic_energy(self):
"""Get the kinetic energy."""
momenta = self.arrays.get("momenta")
if momenta is None:
return 0.0
return 0.5 * np.vdot(momenta, self.get_velocities())
def set_momenta(self, momenta, apply_constraint=True):
"""Set momenta."""
if apply_constraint and len(self.constraints) > 0 and momenta is not None:
momenta = np.array(momenta) # modify a copy
for constraint in self.constraints:
if hasattr(constraint, "adjust_momenta"):
constraint.adjust_momenta(self, momenta)
self.set_array("momenta", momenta, float, (3,))
self.interactive_cache["velocities"].append(self.get_velocities())
self.interactive_cache["energy_kin"].append(self.get_kinetic_energy())
def set_velocities(self, velocities):
"""Set the momenta by specifying the velocities."""
self.set_momenta(self.get_masses()[:, np.newaxis] * velocities)
def get_momenta(self):
"""Get array of momenta."""
if "momenta" in self.arrays:
return self.arrays["momenta"].copy()
else:
return np.zeros((len(self), 3))
def set_array(self, name, a, dtype=None, shape=None):
"""Update array.
If *shape* is not *None*, the shape of *a* will be checked.
If *a* is *None*, then the array is deleted."""
b = self.arrays.get(name)
if b is None:
if a is not None:
self.new_array(name, a, dtype, shape)
else:
if a is None:
del self.arrays[name]
else:
a = np.asarray(a)
if a.shape != b.shape:
raise ValueError(
"Array has wrong shape %s != %s." % (a.shape, b.shape)
)
b[:] = a
def get_angular_momentum(self):
"""Get total angular momentum with respect to the center of mass."""
com = self.get_center_of_mass()
positions = self.get_positions()
positions -= com # translate center of mass to origin
return np.cross(positions, self.get_momenta()).sum(0)
def new_array(self, name, a, dtype=None, shape=None):
"""Add new array.
If *shape* is not *None*, the shape of *a* will be checked."""
if dtype is not None:
a = np.array(a, dtype, order="C")
if len(a) == 0 and shape is not None:
a.shape = (-1,) + shape
else:
if not a.flags["C_CONTIGUOUS"]:
a = np.ascontiguousarray(a)
else:
a = a.copy()
if name in self.arrays:
raise RuntimeError
for b in self.arrays.values():
if len(a) != len(b):
raise ValueError("Array has wrong length: %d != %d." % (len(a), len(b)))
break
if shape is not None and a.shape[1:] != shape:
raise ValueError(
"Array has wrong shape %s != %s." % (a.shape, (a.shape[0:1] + shape))
)
self.arrays[name] = a
def has(self, name):
"""Check for existence of array.
name must be one of: 'tags', 'momenta', 'masses', 'initial_magmoms',
'initial_charges'."""
# XXX extend has to calculator properties
return name in self.arrays
def get_center_of_mass(self, scaled=False):
"""Get the center of mass.
If scaled=True the center of mass in scaled coordinates
is returned."""
m = self.get_masses()
com = np.dot(m, self.arrays["positions"]) / m.sum()
if scaled:
if self._fast_mode:
return np.linalg.solve(self._ham.structure.cells[-1].T, com)
else:
return np.linalg.solve(self._ham.output.cells[-1].T, com)
else:
return com
def get_velocities(self):
"""Get array of velocities."""
momenta = self.arrays.get("momenta")
if momenta is None:
return None
m = self.get_masses()
# m = self.arrays.get('masses')
# if m is None:
# m = atomic_masses[self.arrays['numbers']]
return momenta / m.reshape(-1, 1)
def __len__(self):
return len(self._ham.structure)