Révision 12
| ase/calculators/mopac.py (revision 12) | ||
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| 8 | 8 |
import commands |
| 9 | 9 |
import numpy as np |
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from copy import deepcopy |
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|
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from ase.atoms import Atoms |
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from ase.units import kcal, mol |
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from ase.calculators.general import Calculator |
| ... | ... | |
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self.spin = 0 |
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self.occupations = None |
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self.first = True |
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self.stress = None |
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self.energy_zero = None |
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self.energy_free = None |
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self.forces = None |
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self.atoms_old = None |
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def write_moldata(self): |
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""" |
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Writes the files that have to be written each timestep |
| ... | ... | |
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def run(self): |
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self.write_moldata() |
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print '<MOPAC calculation started>' |
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out = commands.getoutput('mopac pymopac.in')
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outputfile = open('pymopac.in.out')
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outfile = open('mopac%02i.out'%(self.restart),'w')
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for line in outputfile: |
| ... | ... | |
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if energy == None: |
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energy = self.rerun() |
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self.forces = self.read_forces() |
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print '<MOPAC calculation finished>' |
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self.energy_zero = energy |
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self.energy_free = energy |
| ... | ... | |
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return energy |
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def read_forces(self): |
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outfile = open('pymopac.in.aux')
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lines = outfile.readlines() |
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outfile.close() |
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|
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outputforces = None |
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nats = len(self.atoms) |
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nx = nats * 3 |
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forces = np.zeros((nats, 3), float) |
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for i,line in enumerate(lines): |
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if line.find('GRADIENTS:') != -1:
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forces = [] |
|
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l = 0 |
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for j in range(nx):
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for j in range(nats * 3):
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|
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if j%10 == 0: |
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l += 1 |
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gline = lines[i+l] |
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k = j -((l-1)*10) |
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|
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try: |
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forces.append(-float(gline[k*18:(k*18)+18]))
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f = -float(gline[k*18:(k*18)+18])
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except ValueError: |
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if outputforces == None: |
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outputforces = self.read_output_forces() |
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forces.append(outputforces[j]) |
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f = outputforces[j] |
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forces[j/3, j%3] = f |
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break |
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forces = np.reshape(forces, (nats, 3)) |
|
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forces *= kcal_mol |
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return forces |
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|
| ... | ... | |
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outfile.close() |
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|
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nats = len(self.atoms) |
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nx = nats * 3 |
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forces = []
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forces = np.zeros((nats, 3), float)
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for i,line in enumerate(lines): |
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if line.find('GRADIENT\n') != -1:
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for j in range(nx):
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for j in range(nats * 3):
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gline = lines[i+j+1] |
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forces.append(-float(gline[49:62]))
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forces[j/3, j%3] = -float(gline[49:62])
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break |
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|
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return forces |
| ... | ... | |
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return block |
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|
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def update(self, atoms): |
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if not (self.atoms.get_positions() == atoms.get_positions()).all() or self.first:
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|
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if self.atoms_old != atoms:
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|
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self.atoms = atoms.copy() |
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self.atoms_old = atoms.copy() |
|
| 188 | 191 |
self.run() |
Formats disponibles : Unified diff