def test_gulp():
# flake8: noqa
from ase.calculators.gulp import GULP, Conditions
from ase import Atoms
import numpy as np
cluster = Atoms(symbols='O4SiOSiO2SiO2SiO2SiOSiO2SiO3SiO3H8',
pbc=np.array([False, False, False], dtype=bool),
cell=np.array(
[[ 0., 0., 0.],
[ 0., 0., 0.],
[ 0., 0., 0.]]),
positions=np.array(
[[-1.444348, -0.43209 , -2.054785],
[-0.236947, 2.98731 , 1.200025],
[ 3.060238, -1.05911 , 0.579909],
[ 2.958277, -3.289076, 2.027579],
[-0.522747, 0.847624, -2.47521 ],
[-2.830486, -2.7236 , -2.020633],
[-0.764328, -1.251141, 1.402431],
[ 3.334801, 0.041643, -4.168601],
[-1.35204 , -2.009562, 0.075892],
[-1.454655, -1.985635, -1.554533],
[ 0.85504 , 0.298129, -3.159972],
[ 1.75833 , 1.256026, 0.690171],
[ 2.376446, -0.239522, -2.881245],
[ 1.806515, -4.484208, -2.686456],
[-0.144193, -2.74503 , -2.177778],
[ 0.167583, 1.582976, 0.47998 ],
[-1.30716 , 1.796853, -3.542121],
[ 1.441364, -3.072993, -1.958788],
[-1.694171, -1.558913, 2.704219],
[ 4.417516, 1.263796, 0.563573],
[ 3.066366, 0.49743 , 0.071898],
[-0.704497, 0.351869, 1.102318],
[ 2.958884, 0.51505 , -1.556651],
[ 1.73983 , -3.161794, -0.356577],
[ 2.131519, -2.336982, 0.996026],
[ 0.752313, -1.788039, 1.687183],
[-0.142347, 1.685301, -1.12086 ],
[ 2.32407 , -1.845905, -2.588202],
[-2.571557, -1.937877, 2.604727],
[ 2.556369, -4.551103, -3.2836 ],
[ 3.032586, 0.591698, -4.896276],
[-1.67818 , 2.640745, -3.27092 ],
[ 5.145483, 0.775188, 0.95687 ],
[-2.81059 , -3.4492 , -2.650319],
[ 2.558023, -3.594544, 2.845928],
[ 0.400993, 3.469148, 1.733289]]))
c = Conditions(cluster)
c.min_distance_rule('O', 'H', 'O2', 'H', 'O1')
cluster.calc = GULP(
keywords='opti conp phon noden distance molq compare angle nono',
shel=['O1','O2'],
conditions=c)
print(cluster.get_potential_energy())
def GULPRelaxation(inputStr):
##for gulp to work. gulp folder must be in the same folder as the script
environ["GULP_LIB"] = "\"" + getcwd() + "/Gulp_40/Libraries/\""
environ["ASE_GULP_COMMAND"] = "\"" + getcwd(
) + "/Gulp_40/Exe/gulp.exe\" < PREFIX.gin > PREFIX.got"
##takes string inputStr and turns it into stepNb, shouldRestartFromScratch listOfAtoms
if len(inputStr) % 4 != 2:
print("Args nb " + str(len(inputStr)))
print(inputStr)
print(
"Not enough args. Args order : stepNb, shouldRestartFromScratch (0 or 1), \n atom list formatted as Name Xpos Ypos Zpos for each atom (example CO2 would be C 0 0 0 O 0 1 1 O 0 1 -1)"
)
return "", False
atomNames = []
atomXYZ = []
stepNb = int(inputStr[0])
shouldRestartFromScratch = int(inputStr[1])
#if restart from scratch, destroy previously known trajectory
if (shouldRestartFromScratch == 1):
my_file = Path('tmp.pckl')
if my_file.is_file():
remove('tmp.pckl')
#create Atoms object to optimize
for i in range(0, math.floor(len(inputStr) / 4)):
atomNames.append(inputStr[4 * i + 2])
atomXYZ.append((float(inputStr[4 * i + 3]), float(inputStr[4 * i + 4]),
float(inputStr[4 * i + 5])))
atoms = Atoms(atomNames, positions=atomXYZ)
c = Conditions(atoms)
#attach calculator
calc = GULP(keywords='conp', library="./Gulp_40/Libraries/reaxff.lib")
atoms.calc = calc
calc.set(keywords='conp opti')
#optimize
opt = calc.get_optimizer(atoms)
opt.run(fmax=0.05)
#io.write('../MoleculeLibrary/tmp.xyz', atoms, format='xyz')
pos = atoms.get_positions()
outStr = ""
for i in range(0, len(atomNames)):
outStr += atomNames[i] + " "
outStr += str(pos[i][0]) + " "
outStr += str(pos[i][1]) + " "
outStr += str(pos[i][2]) + " "
return outStr, True
[-0.144193, -2.74503, -2.177778],
[0.167583, 1.582976, 0.47998],
[-1.30716, 1.796853, -3.542121],
[1.441364, -3.072993, -1.958788],
[-1.694171, -1.558913, 2.704219],
[4.417516, 1.263796, 0.563573],
[3.066366, 0.49743, 0.071898],
[-0.704497, 0.351869, 1.102318],
[2.958884, 0.51505, -1.556651],
[1.73983, -3.161794, -0.356577],
[2.131519, -2.336982, 0.996026],
[0.752313, -1.788039, 1.687183],
[-0.142347, 1.685301, -1.12086],
[2.32407, -1.845905, -2.588202],
[-2.571557, -1.937877, 2.604727],
[2.556369, -4.551103, -3.2836],
[3.032586, 0.591698, -4.896276],
[-1.67818, 2.640745, -3.27092],
[5.145483, 0.775188, 0.95687],
[-2.81059, -3.4492, -2.650319],
[2.558023, -3.594544, 2.845928],
[0.400993, 3.469148, 1.733289]]))
c = Conditions(cluster)
c.min_distance_rule('O', 'H', 'O2', 'H', 'O1')
cluster.set_calculator(
GULP(keywords='opti conp phon noden distance molq compare angle nono',
shel=['O1', 'O2'],
conditions=c))
print(cluster.get_potential_energy())
def multi_stage_gulp_calc(structure,
num_calcs,
gulp_files,
main_keywords,
additional_keywords,
main_options,
additional_options,
max_gnorms,
gulp_shells=[],
gulp_library="",
gulp_conditions=None,
remove_vacancies=True):
"""
Run a GULP calculation that consists of many stages, which can involve
different keywords and options.
Parameters
----------
structure : ChemDASH structure
The structure class containing ASE atoms object and properties.
num_calcs : integer
The number of GULP calculations to run
gulp_files : string
Name used for input and output files for each GULP calculation
main_keywords : list
List of GULP keywords. Default is "sing" for a single point energy
calculation.
additional_keywords : list
List of extra GULP keywords for each calculation. Default is None
main_options : list
List of GULP options. Default is None
additional_options : list
List of extra GULP options for each calculation. Default is None
max_gnorms : list
List of maximum values of the final gnorm for each calculation.
gulp_shells : dictionary, optional
A dictionary with atom labels as keys and charges as values for each
atomic species to have a shell attached.
gulp_library : string, optional
The library file containing the forcefield to be used in the calculation.
gulp_conditions : ASE Conditions, optional
The conditions used to determine the label given to particular atoms if
the forcefield has different atom types.
Returns
-------
atoms : ase atoms
The structure after the split calculation.
result : string
The result of the GULP calculation,
either "converged", "unconverged", "gulp failure", or "timed out"
energy : float
Energy of the structure in eV/atom.
outcome : string
GULP outcome of the final stage of this calculation.
calc_time : float
Time taken for this GULP calculation.
potentials : float
Site potentials for each atom.
derivs : float
Magnitude of the derivatives of the potential for each atom.
---------------------------------------------------------------------------
Paul Sharp 28/01/2021
"""
assert len(
gulp_files
) >= num_calcs, 'ERROR in gulp_calc.multi_stage_gulp_calc() -- number of GULP calculations is set to {0:d}, but only {1:d} filenames are provided.'.format(
num_calcs, len(gulp_files))
assert len(
additional_keywords
) >= num_calcs, 'ERROR in gulp_calc.multi_stage_gulp_calc() -- number of GULP calculations is set to {0:d}, but only {1:d} sets of additional keywords are provided.'.format(
num_calcs, len(additional_keywords))
assert len(
additional_options
) >= num_calcs, 'ERROR in gulp_calc.multi_stage_gulp_calc() -- number of GULP calculations is set to {0:d}, but only {1:d} sets of additional options are provided.'.format(
num_calcs, len(additional_options))
gulp_start_time = time.time()
failed_outcome = "Too many failed attempts to optimise "
calc_files = {
"input": "",
"output": "",
"restart": "",
}
structure.potentials = []
structure.derivs = []
# Strip out vacancies from the structure
if remove_vacancies:
vacancy_positions = determine_vacancy_positions(structure.atoms.copy())
del structure.atoms[[
atom.index for atom in structure.atoms if atom.symbol == "X"
]]
if structure.labels is not None:
gulp_conditions = Conditions(structure.atoms)
gulp_conditions.atoms_labels = structure.labels
for i in range(0, num_calcs):
composite_keys = (main_keywords + " " + additional_keywords[i]).split()
gulp_keywords = " ".join(
sorted(set(composite_keys), key=composite_keys.index))
composite_options = main_options + additional_options[i]
composite_options.append("dump " + gulp_files[i] + ".res")
gulp_options = list(
sorted(set(composite_options), key=composite_options.index))
structure.atoms, structure.energy, gnorm, result, calc_files = run_gulp(
structure.atoms, gulp_files[i], calc_files["restart"],
gulp_keywords, gulp_options, gulp_shells, gulp_library,
gulp_conditions)
# Continue only if the calculation was successfully performed without timing out
if result == "timed out" or result == "gulp failure":
outcome = result
if os.path.isfile(calc_files["output"]):
outcome = read_outcome(calc_files["output"])
if outcome == "":
outcome = "Bash timeout"
break
outcome = read_outcome(calc_files["output"])
# We abandon the calculation if the outcome "Too many failed attempts to optimise" occurs,
# the energy and gradient norm have blown up such that they are not representable as floats,
# or the max gnorm for this calculation, if provided, is exceeded.
# if (outcome == failed_outcome) or (not check_float(structureenergy)) or (not check_float(gnorm)):
if (not check_float(structure.energy)) or (not check_float(gnorm)):
result = "unconverged"
break
if isinstance(max_gnorms[i], float) and isinstance(gnorm, float):
if gnorm > max_gnorms[i]:
result = "unconverged"
break
# Update atoms object before continuing
# This is necessary because of a bug in ASE, where it only updates atomic positions if they are given in cartesian coordinates
try:
structure.atoms, structure.energy = update_atoms_from_restart_file(
structure.atoms, structure.energy, calc_files["restart"])
except ValueError:
result = "unconverged"
break
else:
if os.path.isfile(calc_files["output"]):
if any(pot_keyword in gulp_keywords
for pot_keyword in ["pot", "potential"]):
structure.potentials, structure.derivs = read_potentials(
calc_files["output"])
if check_convergence(calc_files["output"], gulp_keywords):
result = "converged"
else:
result = "unconverged"
else:
outcome = ""
result = "unconverged"
# Replace the vacancies in the atoms object
if remove_vacancies:
structure.atoms = populate_points_with_vacancies(
structure.atoms, vacancy_positions)
structure.volume = structure.atoms.get_volume()
calc_time = time.time() - gulp_start_time
return structure, result, outcome, calc_time