def read_old_gpw(filename):
from gpaw.io.tar import Reader
r = Reader(filename)
positions = r.get('CartesianPositions') * Bohr
numbers = r.get('AtomicNumbers')
cell = r.get('UnitCell') * Bohr
pbc = r.get('BoundaryConditions')
tags = r.get('Tags')
magmoms = r.get('MagneticMoments')
energy = r.get('PotentialEnergy') * Hartree
if r.has_array('CartesianForces'):
forces = r.get('CartesianForces') * Hartree / Bohr
else:
forces = None
atoms = Atoms(positions=positions,
numbers=numbers,
cell=cell,
pbc=pbc)
if tags.any():
atoms.set_tags(tags)
if magmoms.any():
atoms.set_initial_magnetic_moments(magmoms)
magmom = magmoms.sum()
else:
magmoms = None
magmom = None
atoms.calc = SinglePointDFTCalculator(atoms, energy=energy,
forces=forces,
magmoms=magmoms,
magmom=magmom)
kpts = []
if r.has_array('IBZKPoints'):
for w, kpt, eps_n, f_n in zip(r.get('IBZKPointWeights'),
r.get('IBZKPoints'),
r.get('Eigenvalues'),
r.get('OccupationNumbers')):
kpts.append(SinglePointKPoint(w, kpt[0], kpt[1],
eps_n[0], f_n[0]))
atoms.calc.kpts = kpts
return atoms
def read_old_gpw(filename):
from gpaw.io.tar import Reader
r = Reader(filename)
positions = r.get('CartesianPositions') * Bohr
numbers = r.get('AtomicNumbers')
cell = r.get('UnitCell') * Bohr
pbc = r.get('BoundaryConditions')
tags = r.get('Tags')
magmoms = r.get('MagneticMoments')
energy = r.get('PotentialEnergy') * Hartree
if r.has_array('CartesianForces'):
forces = r.get('CartesianForces') * Hartree / Bohr
else:
forces = None
atoms = Atoms(positions=positions, numbers=numbers, cell=cell, pbc=pbc)
if tags.any():
atoms.set_tags(tags)
if magmoms.any():
atoms.set_initial_magnetic_moments(magmoms)
magmom = magmoms.sum()
else:
magmoms = None
magmom = None
atoms.calc = SinglePointDFTCalculator(atoms,
energy=energy,
forces=forces,
magmoms=magmoms,
magmom=magmom)
kpts = []
if r.has_array('IBZKPoints'):
for w, kpt, eps_n, f_n in zip(r.get('IBZKPointWeights'),
r.get('IBZKPoints'),
r.get('Eigenvalues'),
r.get('OccupationNumbers')):
kpts.append(SinglePointKPoint(w, kpt[0], kpt[1], eps_n[0], f_n[0]))
atoms.calc.kpts = kpts
return atoms
def wrap_old_gpw_reader(filename):
warnings.warn('You are reading an old-style gpw-file. Please check '
'the results carefully!')
r = Reader(filename)
data = {
'version': -1,
'gpaw_version': '1.0',
'ha': Ha,
'bohr': Bohr,
'scf.': {
'converged': True
},
'atoms.': {},
'wave_functions.': {}
}
class DictBackend:
def write(self, **kwargs):
data['atoms.'].update(kwargs)
write_atoms(DictBackend(), read_atoms(r))
e_total_extrapolated = r.get('PotentialEnergy').item() * Ha
magmom_a = r.get('MagneticMoments')
data['results.'] = {
'energy': e_total_extrapolated,
'magmoms': magmom_a,
'magmom': magmom_a.sum()
}
if r.has_array('CartesianForces'):
data['results.']['forces'] = r.get('CartesianForces') * Ha / Bohr
p = data['parameters.'] = {}
p['xc'] = r['XCFunctional']
p['nbands'] = r.dimension('nbands')
p['spinpol'] = (r.dimension('nspins') == 2)
bzk_kc = r.get('BZKPoints', broadcast=True)
if r.has_array('NBZKPoints'):
p['kpts'] = r.get('NBZKPoints', broadcast=True)
if r.has_array('MonkhorstPackOffset'):
offset_c = r.get('MonkhorstPackOffset', broadcast=True)
if offset_c.any():
p['kpts'] = monkhorst_pack(p['kpts']) + offset_c
else:
p['kpts'] = bzk_kc
if r['version'] < 4:
usesymm = r['UseSymmetry']
if usesymm is None:
p['symmetry'] = {'time_reversal': False, 'point_group': False}
elif usesymm:
p['symmetry'] = {'time_reversal': True, 'point_group': True}
else:
p['symmetry'] = {'time_reversal': True, 'point_group': False}
else:
p['symmetry'] = {
'point_group': r['SymmetryOnSwitch'],
'symmorphic': r['SymmetrySymmorphicSwitch'],
'time_reversal': r['SymmetryTimeReversalSwitch'],
'tolerance': r['SymmetryToleranceCriterion']
}
p['basis'] = r['BasisSet']
try:
h = r['GridSpacing']
except KeyError: # CMR can't handle None!
h = None
if h is not None:
p['h'] = Bohr * h
if r.has_array('GridPoints'):
p['gpts'] = r.get('GridPoints')
p['lmax'] = r['MaximumAngularMomentum']
p['setups'] = r['SetupTypes']
p['fixdensity'] = r['FixDensity']
nbtc = r['NumberOfBandsToConverge']
if not isinstance(nbtc, (int, str)):
# The string 'all' was eval'ed to the all() function!
nbtc = 'all'
p['convergence'] = {
'density': r['DensityConvergenceCriterion'],
'energy': r['EnergyConvergenceCriterion'] * Ha,
'eigenstates': r['EigenstatesConvergenceCriterion'],
'bands': nbtc
}
mixer = r['MixClass']
weight = r['MixWeight']
for key in ['basis', 'setups']:
dct = p[key]
if isinstance(dct, dict) and None in dct:
dct['default'] = dct.pop(None)
if mixer == 'Mixer':
from gpaw.mixer import Mixer
elif mixer == 'MixerSum':
from gpaw.mixer import MixerSum as Mixer
elif mixer == 'MixerSum2':
from gpaw.mixer import MixerSum2 as Mixer
elif mixer == 'MixerDif':
from gpaw.mixer import MixerDif as Mixer
elif mixer == 'DummyMixer':
from gpaw.mixer import DummyMixer as Mixer
else:
Mixer = None
if Mixer is None:
p['mixer'] = None
else:
p['mixer'] = Mixer(r['MixBeta'], r['MixOld'], weight)
p['stencils'] = (r['KohnShamStencil'], r['InterpolationStencil'])
vt_sG = r.get('PseudoPotential') * Ha
ps = r['PoissonStencil']
if isinstance(ps, int) or ps == 'M':
poisson = {'name': 'fd'}
poisson['nn'] = ps
if data['atoms.']['pbc'] == [1, 1, 0]:
v1, v2 = vt_sG[0, :, :, [0, -1]].mean(axis=(1, 2))
if abs(v1 - v2) > 0.01:
warnings.warn('I am guessing that this calculation was done '
'with a dipole-layer correction?')
poisson['dipolelayer'] = 'xy'
p['poissonsolver'] = poisson
p['charge'] = r['Charge']
fixmom = r['FixMagneticMoment']
p['occupations'] = FermiDirac(r['FermiWidth'] * Ha, fixmagmom=fixmom)
p['mode'] = r['Mode']
if p['mode'] == 'pw':
p['mode'] = PW(ecut=r['PlaneWaveCutoff'] * Ha)
if len(bzk_kc) == 1 and not bzk_kc[0].any():
# Gamma point only:
if r['DataType'] == 'Complex':
p['dtype'] = complex
data['occupations.'] = {
'fermilevel': r['FermiLevel'] * Ha,
'split': r.parameters.get('FermiSplit', 0) * Ha,
'h**o': np.nan,
'lumo': np.nan
}
data['density.'] = {
'density': r.get('PseudoElectronDensity') * Bohr**-3,
'atomic_density_matrices': r.get('AtomicDensityMatrices')
}
data['hamiltonian.'] = {
'e_coulomb': r['Epot'] * Ha,
'e_entropy': -r['S'] * Ha,
'e_external': r['Eext'] * Ha,
'e_kinetic': r['Ekin'] * Ha,
'e_total_extrapolated': e_total_extrapolated,
'e_xc': r['Exc'] * Ha,
'e_zero': r['Ebar'] * Ha,
'potential': vt_sG,
'atomic_hamiltonian_matrices': r.get('NonLocalPartOfHamiltonian') * Ha
}
data['hamiltonian.']['e_total_free'] = (sum(
data['hamiltonian.'][e] for e in [
'e_coulomb', 'e_entropy', 'e_external', 'e_kinetic', 'e_xc',
'e_zero'
]))
if r.has_array('GLLBPseudoResponsePotential'):
data['hamiltonian.']['xc.'] = {
'gllb_pseudo_response_potential':
r.get('GLLBPseudoResponsePotential') * Ha,
'gllb_dxc_pseudo_response_potential':
r.get('GLLBDxcPseudoResponsePotential') * Ha / Bohr,
'gllb_atomic_density_matrices':
r.get('GLLBAtomicDensityMatrices'),
'gllb_atomic_response_matrices':
r.get('GLLBAtomicResponseMatrices'),
'gllb_dxc_atomic_density_matrices':
r.get('GLLBDxcAtomicDensityMatrices'),
'gllb_dxc_atomic_response_matrices':
r.get('GLLBDxcAtomicResponseMatrices')
}
special = [('eigenvalues', 'Eigenvalues'),
('occupations', 'OccupationNumbers'),
('projections', 'Projections')]
if r['Mode'] == 'pw':
special.append(('coefficients', 'PseudoWaveFunctions'))
try:
data['wave_functions.']['indices'] = r.get('PlaneWaveIndices')
except KeyError:
pass
elif r['Mode'] == 'fd':
special.append(('values', 'PseudoWaveFunctions'))
else:
special.append(('coefficients', 'WaveFunctionCoefficients'))
for name, old in special:
try:
fd, shape, size, dtype = r.get_file_object(old, ())
except KeyError:
continue
offset = fd
data['wave_functions.'][name + '.'] = {
'ndarray': (shape, dtype.name, offset)
}
new = ulm.Reader(devnull,
data=data,
little_endian=r.byteswap ^ np.little_endian)
for ref in new._data['wave_functions']._data.values():
try:
ref.fd = ref.offset
except AttributeError:
continue
ref.offset = 0
return new
