#!/usr/bin/python3
import numpy as np
# from lib.vasp import system_from_poscar
def _make_pwscf_01_runctrl(sys_data, ecut, ediff, smearing, degauss):
tot_natoms = sum(sys_data["atom_numbs"])
ntypes = len(sys_data["atom_names"])
ret = ""
ret += "&control\n"
ret += "calculation='scf',\n"
ret += "restart_mode='from_scratch',\n"
ret += "pseudo_dir='./',\n"
ret += "outdir='./OUT',\n"
ret += "tprnfor = .TRUE.,\n"
ret += "tstress = .TRUE.,\n"
ret += "disk_io = 'none',\n"
ret += "/\n"
ret += "&system\n"
ret += "ibrav= 0,\n"
ret += "nat = %d,\n" % tot_natoms
ret += "ntyp = %d,\n" % ntypes
ret += "vdw_corr = 'TS',\n"
ret += "ecutwfc = %f,\n" % ecut
ret += "ts_vdw_econv_thr=%e,\n" % ediff
ret += "nosym = .TRUE.,\n"
if degauss is not None:
ret += "degauss = %f,\n" % degauss
if smearing is not None:
ret += "smearing = '%s',\n" % (smearing.lower())
ret += "/\n"
ret += "&electrons\n"
ret += "conv_thr = %e,\n" % ediff
ret += "/\n"
return ret
def _make_pwscf_02_species(sys_data, pps):
atom_names = sys_data["atom_names"]
if "atom_masses" in sys_data:
atom_masses = sys_data["atom_masses"]
else:
atom_masses = [1 for ii in atom_names]
ret = ""
ret += "ATOMIC_SPECIES\n"
ntypes = len(atom_names)
assert ntypes == len(atom_names)
assert ntypes == len(atom_masses)
assert ntypes == len(pps)
for ii in range(ntypes):
ret += "%s %d %s\n" % (atom_names[ii], atom_masses[ii], pps[ii])
return ret
def _make_pwscf_03_config(sys_data):
cell = sys_data["cell"]
cell = np.reshape(cell, [3, 3])
coordinates = sys_data["coordinates"]
atom_names = sys_data["atom_names"]
atom_numbs = sys_data["atom_numbs"]
ntypes = len(atom_names)
ret = ""
ret += "CELL_PARAMETERS { angstrom }\n"
for ii in range(3):
for jj in range(3):
ret += "%f " % cell[ii][jj]
ret += "\n"
ret += "\n"
ret += "ATOMIC_POSITIONS { angstrom }\n"
cc = 0
for ii in range(ntypes):
for jj in range(atom_numbs[ii]):
ret += f"{atom_names[ii]} {coordinates[cc][0]:f} {coordinates[cc][1]:f} {coordinates[cc][2]:f}\n"
cc += 1
return ret
def _kshift(nkpt):
if (nkpt // 2) * 2 == nkpt:
return 1
else:
return 0
def _make_pwscf_04_kpoints(sys_data, kspacing):
cell = sys_data["cell"]
cell = np.reshape(cell, [3, 3])
rcell = np.linalg.inv(cell)
rcell = rcell.T
kpoints = [
(np.ceil(2 * np.pi * np.linalg.norm(ii) / kspacing).astype(int)) for ii in rcell
]
ret = ""
ret += "K_POINTS { automatic }\n"
for ii in range(3):
ret += "%d " % kpoints[ii]
for ii in range(3):
ret += "%d " % _kshift(kpoints[ii])
ret += "\n"
return ret
def _make_smearing(fp_params):
smearing = None
degauss = None
if "smearing" in fp_params:
smearing = (fp_params["smearing"]).lower()
if "sigma" in fp_params:
degauss = fp_params["sigma"]
if (smearing is not None) and (smearing.split(":")[0] == "mp"):
smearing = "mp"
if smearing not in [None, "gauss", "mp", "fd"]:
raise RuntimeError("unknow smearing method " + smearing)
return smearing, degauss
# sys_data = system_from_poscar('POSCAR')
# ret = ""
# ret += _make_pwscf_01_runctrl(sys_data, 20, 1e-8)
# ret += "\n"
# ret += _make_pwscf_02_species(sys_data, ['../pp/C_HSCV_PBE-1.0.UPF', '../H_HSCV_PBE-1.0.UPF', '../N_HSCV_PBE-1.0.UPF'])
# ret += "\n"
# ret += _make_pwscf_03_config(sys_data)
# ret += "\n"
# ret += _make_pwscf_04_kpoints(sys_data, 0.6)
# ret += "\n"
# open('input', 'w').write(ret)