def test_scf_cell():
filename = 'files/pw.vc_relax_coords_fixed.out'
common.system('gunzip %s.gz' %filename)
pp = parse.PwSCFOutputFile(filename, use_alat=False)
cell_2d_red = pp.get_cell()
assert np.allclose(cell_2d_red, cell_2d_red_ref, atol=1e-15, rtol=0)
pp = parse.PwSCFOutputFile(filename, use_alat=True)
assert np.allclose(pp.get_cell(),
cell_2d_red*pp.get_alat(),
atol=1e-15,
rtol=0)
st = io.read_pw_scf(filename)
tr = io.read_pw_md(filename)
# tr is from a vc-relax w/ fixed fractional coords, check that
assert np.allclose(np.zeros((tr.nstep,tr.natoms,3)),
tr.coords_frac - tr.coords_frac[0,...].copy(),
rtol=0, atol=1e-15)
# check if scf parser gets the same coords_frac as the trajectory parser
# Note: this and the next test have the same max error of
# 4.33868466709e-08 (b/c of limited accuracy in printed numbers in
# pwscf output)
assert np.allclose(st.coords_frac,tr.coords_frac[0,...], atol=1e-7, rtol=0)
# same test, plus test of concatenate() works
trcat = crys.concatenate((st,tr))
assert np.allclose(np.zeros((trcat.nstep,trcat.natoms,3)),
trcat.coords_frac - trcat.coords_frac[0,...].copy(),
rtol=0, atol=1e-7)
def __call__(self, obj, logfile=None, structfile=None, disp=False,
keepfiles=False, tmpdir='/tmp', wait=True, bg=False,
options=''):
"""
Call viewer.
The executed shell command is::
<cmd> <options> <structfile> > <logfile>
Parameters
----------
obj : Structure or Trajectory
logfile : str, optional
Filename of a logfile for the viewer's text output.
structfile : str, optional
Filename of a file to write the structure to.
disp : bool
Display text output (i.e. `logfile`'s content).
keepfiles : bool
Keep `structfile` and `logfile` on disk.
tmpdir : str, optional
Directory where temp files are written to.
wait : bool, optional
`wait` passed to common.system(), wait (or not) for command to exit
bg : bool
Background mode. If True then this is an alias for `wait=False` +
`keepfiles=True`. The latter is needed b/c with just `wait=False`,
temp files will be deleted right after the shell call and the
viewer program may complain.
"""
if bg:
wait = False
keepfiles = True
if self.assert_cmd is not None:
self.assert_cmd(obj)
self._set_dummy_symbols(obj)
if structfile is None:
fd1,structfile = mkstemp(dir=tmpdir,
prefix='pwtools_view_struct_',
suffix=self.suffix)
if logfile is None:
fd2,logfile = mkstemp(dir=tmpdir,
prefix='pwtools_view_log_')
self.writer(structfile, obj)
if disp:
cmd_str = "%s %s %s 2>&1 | tee %s" %(self.cmd, options, structfile, logfile)
else:
cmd_str = "%s %s %s > %s 2>&1" %(self.cmd, options, structfile, logfile)
common.system(cmd_str, wait=wait)
if not keepfiles:
os.unlink(structfile)
os.unlink(logfile)
def test_mix_output():
# Mixing 'run' and 'minimize' commands (and/or using either command
# multiple times) causes massive jibber-jabber text output in log.lammps,
# which we filter. Check if we get the "thermo_style custom" data between
# "Step..." and "Loop..." from each command.
#
# In this test, we have 3 commands (minimize, run (short MD), minimize),
# which are all set to perform 10 steps, so we have 30 in total. Due to
# redundant printing by lammps, the result arrays are a bit longer.
tgz = 'files/lammps/mix_output.tgz'
tgz_path = os.path.dirname(tgz)
unpack_path = tgz.replace('.tgz', '')
common.system("tar -C {0} -xzf {1}".format(tgz_path, tgz))
tr = io.read_lammps_md_txt("{0}/log.lammps".format(unpack_path))
assert tr.nstep == 31
assert tr.coords.shape == (31, 4, 3)
assert tr.stress.shape == (33, 3, 3)
assert tr.temperature.shape == (33, )
def test_mix_output():
# Mixing 'run' and 'minimize' commands (and/or using either command
# multiple times) causes massive jibber-jabber text output in log.lammps,
# which we filter. Check if we get the "thermo_style custom" data between
# "Step..." and "Loop..." from each command.
#
# In this test, we have 3 commands (minimize, run (short MD), minimize),
# which are all set to perform 10 steps, so we have 30 in total. Due to
# redundant printing by lammps, the result arrays are a bit longer.
tgz = 'files/lammps/mix_output.tgz'
tgz_path = os.path.dirname(tgz)
unpack_path = tgz.replace('.tgz','')
common.system("tar -C {0} -xzf {1}".format(tgz_path,tgz))
tr = io.read_lammps_md_txt("{0}/log.lammps".format(unpack_path))
assert tr.nstep == 31
assert tr.coords.shape == (31,4,3)
assert tr.stress.shape == (33,3,3)
assert tr.temperature.shape == (33,)
def test_pw_vc_relax_out():
filename = 'files/pw.vc_relax_cell_unit.out'
common.system('gunzip %s.gz' % filename)
pp = PwMDOutputFile(filename=filename)
pp.parse()
common.system('gzip %s' % filename)
none_attrs = [
'coords',
'ekin',
'temperature',
'timestep',
]
assert_attrs_not_none(pp, none_attrs=none_attrs)
traj = pp.get_traj()
none_attrs = [\
'ekin',
'temperature',
'timestep',
'velocity',
'time',
]
assert_attrs_not_none(traj, none_attrs=none_attrs)
assert pp.cell_unit == 'alat'
assert pp.cell.shape == (6, 3, 3)
for idx in range(1, pp.cell.shape[0]):
assert crys.rms(pp.cell[idx, ...] - pp.cell[0, ...]) > 0.0
# Test _get_block_header_unit, which is used in get_cell_unit().
dct = \
{'FOO': None,
'FOO alat': 'alat',
'FOO (alat)': 'alat',
'FOO {alat}': 'alat',
'FOO (alat=1.23)': 'alat',
'FOO (alat= 1.23)': 'alat',
}
for txt, val in dct.items():
fn = pj(testdir, 'test_block_header_unit.txt')
common.file_write(fn, txt)
pp.filename = fn
assert pp._get_block_header_unit('FOO') == val
def test_pw_vc_relax_out():
filename = 'files/pw.vc_relax_cell_unit.out'
common.system('gunzip %s.gz' %filename)
pp = PwMDOutputFile(filename=filename)
pp.parse()
common.system('gzip %s' %filename)
none_attrs = ['coords',
'ekin',
'temperature',
'timestep',
]
assert_attrs_not_none(pp, none_attrs=none_attrs)
traj = pp.get_traj()
none_attrs = [\
'ekin',
'temperature',
'timestep',
'velocity',
'time',
]
assert_attrs_not_none(traj, none_attrs=none_attrs)
assert pp.cell_unit == 'alat'
assert pp.cell.shape == (6,3,3)
for idx in range(1, pp.cell.shape[0]):
assert crys.rms(pp.cell[idx,...] - pp.cell[0,...]) > 0.0
# Test _get_block_header_unit, which is used in get_cell_unit().
dct = \
{'FOO': None,
'FOO alat': 'alat',
'FOO (alat)': 'alat',
'FOO {alat}': 'alat',
'FOO (alat=1.23)': 'alat',
'FOO (alat= 1.23)': 'alat',
}
for txt,val in dct.iteritems():
fn = pj(testdir, 'test_block_header_unit.txt')
common.file_write(fn, txt)
pp.filename = fn
assert pp._get_block_header_unit('FOO') == val
def test_pw_vc_relax_out():
filename = 'files/pw.vc_relax.out'
common.system('gunzip %s.gz' %filename)
pp = PwMDOutputFile(filename=filename)
pp.parse()
common.system('gzip %s' %filename)
none_attrs = ['coords',
'ekin',
'temperature',
'timestep',
]
assert_attrs_not_none(pp, none_attrs=none_attrs)
traj = pp.get_traj()
none_attrs = [\
'ekin',
'temperature',
'timestep',
'velocity',
'time',
]
assert_attrs_not_none(traj, none_attrs=none_attrs)
def run(tgz, skip=[], atol_map={}):
tgz_path = os.path.dirname(tgz)
unpack_path = tgz.replace('.tgz','')
common.system("tar -C {0} -xzf {1}".format(tgz_path,tgz))
tr1 = io.read_lammps_md_txt("{0}/log.lammps".format(unpack_path))
tr2 = io.read_lammps_md_dcd("{0}/log.lammps".format(unpack_path))
for name in tr1.attr_lst:
if name in skip:
continue
elif atol_map.has_key(name):
set_atol(atol_map[name])
else:
set_atol()
x1 = getattr(tr1, name)
x2 = getattr(tr2, name)
print name
tools.assert_all_types_almost_equal(x1, x2)
# stress
assert (tr1.stress[:,0,1] == tr1.stress[:,1,0]).all()
assert (tr1.stress[:,0,2] == tr1.stress[:,2,0]).all()
assert (tr1.stress[:,1,2] == tr1.stress[:,2,1]).all()
def run(tgz, skip=[], atol_map={}):
tgz_path = os.path.dirname(tgz)
unpack_path = tgz.replace('.tgz', '')
common.system("tar -C {0} -xzf {1}".format(tgz_path, tgz))
tr1 = io.read_lammps_md_txt("{0}/log.lammps".format(unpack_path))
tr2 = io.read_lammps_md_dcd("{0}/log.lammps".format(unpack_path))
for name in tr1.attr_lst:
if name in skip:
continue
elif name in atol_map:
set_atol(atol_map[name])
else:
set_atol()
x1 = getattr(tr1, name)
x2 = getattr(tr2, name)
print(name)
tools.assert_all_types_almost_equal(x1, x2)
# stress
assert (tr1.stress[:, 0, 1] == tr1.stress[:, 1, 0]).all()
assert (tr1.stress[:, 0, 2] == tr1.stress[:, 2, 0]).all()
assert (tr1.stress[:, 1, 2] == tr1.stress[:, 2, 1]).all()
def test_scf_cell():
filename = 'files/pw.vc_relax_coords_fixed.out'
common.system('gunzip %s.gz' % filename)
pp = parse.PwSCFOutputFile(filename, use_alat=False)
cell_2d_red = pp.get_cell()
assert np.allclose(cell_2d_red, cell_2d_red_ref, atol=1e-15, rtol=0)
pp = parse.PwSCFOutputFile(filename, use_alat=True)
assert np.allclose(pp.get_cell(),
cell_2d_red * pp.get_alat(),
atol=1e-15,
rtol=0)
st = io.read_pw_scf(filename)
tr = io.read_pw_md(filename)
# tr is from a vc-relax w/ fixed fractional coords, check that
assert np.allclose(np.zeros((tr.nstep, tr.natoms, 3)),
tr.coords_frac - tr.coords_frac[0, ...].copy(),
rtol=0,
atol=1e-15)
# check if scf parser gets the same coords_frac as the trajectory parser
# Note: this and the next test have the same max error of
# 4.33868466709e-08 (b/c of limited accuracy in printed numbers in
# pwscf output)
assert np.allclose(st.coords_frac,
tr.coords_frac[0, ...],
atol=1e-7,
rtol=0)
# same test, plus test of concatenate() works
trcat = crys.concatenate((st, tr))
assert np.allclose(np.zeros((trcat.nstep, trcat.natoms, 3)),
trcat.coords_frac - trcat.coords_frac[0, ...].copy(),
rtol=0,
atol=1e-7)
pair_coeff * * ../AlN.tersoff Al N
### IO
dump dump_txt all custom 1 lmp.out.dump id type xu yu zu fx fy fz &
vx vy vz xsu ysu zsu
dump_modify dump_txt sort id
dump dump_dcd all dcd 1 lmp.out.dcd
dump_modify dump_dcd sort id unwrap yes
thermo_style custom step temp vol cella cellb cellc cellalpha cellbeta cellgamma &
ke pe etotal &
press pxx pyy pzz pxy pxz pyz cpu press
thermo_modify flush yes
thermo 1
fix 1 all box/relax tri 0.0
minimize 1e-8 1e-8 5000 10000
"""
st = crys.Structure(coords_frac=np.array([[0.0]*3, [.5]*3]),
cryst_const=np.array([2.85]*3 + [60]*3),
symbols=['Al','N'])
for dr in ['md-nvt', 'md-npt', 'vc-relax']:
common.system("rm -rfv {dr}; mkdir -v {dr}".format(dr=dr))
io.write_lammps('vc-relax/lmp.struct', st)
io.write_lammps('md-nvt/lmp.struct', crys.scell(st,(2,2,2)))
io.write_lammps('md-npt/lmp.struct', crys.scell(st,(2,2,2)))
for dr,txt in lmp_in.iteritems():
common.file_write('%s/lmp.in' %dr, txt)
matdyn_in_fn = 'matdyn.disp.in'
matdyn_freq_fn = 'matdyn.freq.disp'
mass_str = '\n'.join("amass(%i)=%e" %(ii+1,m) for ii,m in \
enumerate(st.mass_unique))
rules = {
'XXXNKS': ks_path.shape[0],
'XXXKS': common.str_arr(ks_path),
'XXXMASS': mass_str,
'XXXFNFREQ': matdyn_freq_fn,
}
txt = common.template_replace(templ_txt, rules, conv=True, mode='txt')
common.file_write(matdyn_in_fn, txt)
redo_matdyn = input('redo the matdyn.x calculation? Y/N')
if redo_matdyn == "Y":
common.system(
"gunzip q2r.fc.gz; /gpfsnyu/home/yf1159/qe-6.5/bin/matdyn.x < %s; gzip q2r.fc"
% matdyn_in_fn)
else:
pass
# parse matdyn output and plot
# define special points path, used in plot_dis() to plot lines at special
# points and make x-labels
sp = kpath.SpecialPointsPath(ks=sp_points,
ks_frac=sp_points_frac,
symbols=sp_symbols)
# QE 4.x, 5.x
# ks is the coordinates of kpoints and the freqs is the frequencies for each band
ks, freqs = pwscf.read_matdyn_freq(matdyn_freq_fn)
def __call__(self,
obj,
logfile=None,
structfile=None,
disp=False,
keepfiles=False,
tmpdir='/tmp',
wait=True,
bg=False,
options=''):
"""
Call viewer.
The executed shell command is::
<cmd> <options> <structfile> > <logfile>
Parameters
----------
obj : Structure or Trajectory
logfile : str, optional
Filename of a logfile for the viewer's text output.
structfile : str, optional
Filename of a file to write the structure to.
disp : bool
Display text output (i.e. `logfile`'s content).
keepfiles : bool
Keep `structfile` and `logfile` on disk.
tmpdir : str, optional
Directory where temp files are written to.
wait : bool, optional
`wait` passed to common.system(), wait (or not) for command to exit
bg : bool
Background mode. If True then this is an alias for `wait=False` +
`keepfiles=True`. The latter is needed b/c with just `wait=False`,
temp files will be deleted right after the shell call and the
viewer program may complain.
"""
if bg:
wait = False
keepfiles = True
if self.assert_cmd is not None:
self.assert_cmd(obj)
self._set_dummy_symbols(obj)
if structfile is None:
fd1, structfile = mkstemp(dir=tmpdir,
prefix='pwtools_view_struct_',
suffix=self.suffix)
if logfile is None:
fd2, logfile = mkstemp(dir=tmpdir, prefix='pwtools_view_log_')
self.writer(structfile, obj)
if disp:
cmd_str = "%s %s %s 2>&1 | tee %s" % (self.cmd, options,
structfile, logfile)
else:
cmd_str = "%s %s %s > %s 2>&1" % (self.cmd, options, structfile,
logfile)
common.system(cmd_str, wait=wait)
if not keepfiles:
os.unlink(structfile)
os.unlink(logfile)
templates = [batch.FileTemplate(basename='pw.in')]
# rs-AlN
st = crys.Structure(coords_frac=np.array([[0.0]*3, [0.5]*3]),
symbols=['Al','N'],
cryst_const=np.array([2.76]*3 + [60]*3))
params_lst = []
for ecutwfc in np.linspace(30,100,8):
params_lst.append([sql.SQLEntry(key='ecutwfc', sqlval=ecutwfc),
sql.SQLEntry(key='ecutrho', sqlval=4.0*ecutwfc),
sql.SQLEntry(key='cell', sqlval=common.str_arr(st.cell)),
sql.SQLEntry(key='natoms', sqlval=st.natoms),
sql.SQLEntry(key='atpos',
sqlval=pwscf.atpos_str(st.symbols,
st.coords_frac)),
])
calc = batch.ParameterStudy(machines=theo,
templates=templates,
params_lst=params_lst,
study_name='convergence_test_cutoff',
)
calc.write_input(sleep=0, backup=False, mode='w')
if not os.path.exists('calc'):
os.symlink('calc_theo', 'calc')
common.system("cp -r ../../../test/files/qe_pseudos calc_theo/pseudo; gunzip calc_theo/pseudo/*")
def view_lst(lst):
from pwtools.common import system
cmd = 'qiv -fm ' + ' '.join(lst)
system(cmd, wait=True)
import os
import numpy as np
from matplotlib import pyplot as plt
from pwtools import parse, crys, constants, common, io
pj = os.path.join
if __name__ == '__main__':
tmpdir = '/tmp/rpdf_vmd_test/'
if not os.path.exists(tmpdir):
os.makedirs(tmpdir)
dct = {}
common.system("gunzip pw.out.gz")
traj = io.read_pw_md('pw.out')
common.system("gzip pw.out")
symbols = np.array(traj.symbols)
# O_Ca
msk1 = symbols=='O'
msk2 = symbols=='Ca'
amask = [msk1, msk2]
tmask = np.s_[-1]
dct['O:Ca:-1:-1'] = {'amask': amask, 'tmask': tmask}
tmask = np.s_[0:]
dct['O:Ca:0:-1'] = {'amask': amask, 'tmask': tmask}
# Ca_O
msk1 = symbols=='Ca'
def write_input(self, mode='a', backup=True, sleep=0, excl=True):
"""
Create calculation dir(s) for each parameter set and write input files
based on ``templates``. Write sqlite database storing all relevant
parameters. Write (bash) shell script to start all calculations (run
locally or submitt batch job file, depending on ``machine.subcmd``).
Parameters
----------
mode : str, optional
Fine tune how to write input files (based on ``templates``) to calc
dirs calc_foo/0/, calc_foo/1/, ... . Note that this doesn't change
the base dir calc_foo at all, only the subdirs for each calc.
{'a', 'w'}
| 'a': Append mode (default). If a previous database is found, then
| subsequent calculations are numbered based on the last 'idx'.
| calc_foo/0 # old
| calc_foo/1 # old
| calc_foo/2 # new
| calc_foo/3 # new
| 'w': Write mode. The target dirs are purged and overwritten. Also,
| the database (self.dbfn) is overwritten. Use this to
| iteratively tune your inputs, NOT for working on already
| present results!
| calc_foo/0 # new
| calc_foo/1 # new
backup : bool, optional
Before writing anything, do a backup of self.calc_dir if it already
exists.
sleep : int, optional
For the script to start (submitt) all jobs: time in seconds for the
shell sleep(1) commmand.
excl : bool
If in append mode, a file <calc_root>/excl_push with all indices of
calculations from old revisions is written. Can be used with
``rsync --exclude-from=excl_push`` when pushing appended new
calculations to a cluster.
"""
assert mode in ['a', 'w'], "Unknown mode: '%s'" % mode
if os.path.exists(self.dbfn):
if backup:
common.backup(self.dbfn)
if mode == 'w':
os.remove(self.dbfn)
have_new_db = not os.path.exists(self.dbfn)
common.makedirs(self.calc_root)
# this call creates a file ``self.dbfn`` if it doesn't exist
sqldb = SQLiteDB(self.dbfn, table=self.db_table)
# max_idx: counter for calc dir numbering
revision = 0
if have_new_db:
max_idx = -1
else:
if mode == 'a':
if sqldb.has_column('idx'):
max_idx = sqldb.execute("select max(idx) from %s" \
%self.db_table).fetchone()[0]
else:
raise Exception(
"database '%s': table '%s' has no "
"column 'idx', don't know how to number calcs" %
(self.dbfn, self.db_table))
if sqldb.has_column('revision'):
revision = int(
sqldb.get_single("select max(revision) \
from %s" % self.db_table)) + 1
elif mode == 'w':
max_idx = -1
sql_records = []
hostnames = []
for imach, machine in enumerate(self.machines):
hostnames.append(machine.hostname)
calc_dir = pj(self.calc_root, self.calc_dir_prefix + \
'_%s' %machine.hostname)
if os.path.exists(calc_dir):
if backup:
common.backup(calc_dir)
if mode == 'w':
common.system("rm -r %s" % calc_dir, wait=True)
run_txt = "here=$(pwd)\n"
for _idx, params in enumerate(self.params_lst):
params = common.flatten(params)
idx = max_idx + _idx + 1
calc_subdir = pj(calc_dir, str(idx))
extra_dct = \
{'revision': revision,
'study_name': self.study_name,
'idx': idx,
'calc_name' : self.study_name + "_run%i" %idx,
}
extra_params = [SQLEntry(key=key, sqlval=val) for key,val in \
extra_dct.items()]
# templates[:] to copy b/c they may be modified in Calculation
calc = Calculation(
machine=machine,
templates=self.templates[:],
params=params + extra_params,
calc_dir=calc_subdir,
)
if mode == 'w' and os.path.exists(calc_subdir):
shutil.rmtree(calc_subdir)
calc.write_input()
run_txt += "cd %i && %s %s && cd $here && sleep %i\n" %(idx,\
machine.subcmd, machine.get_jobfile_basename(), sleep)
if imach == 0:
sql_records.append(calc.get_sql_record())
common.file_write(pj(calc_dir, 'run.sh'), run_txt)
for record in sql_records:
record['hostname'] = SQLEntry(sqlval=','.join(hostnames))
# for incomplete parameters: collect header parts from all records and
# make a set = unique entries
raw_header = [(key, entry.sqltype.upper()) for record in sql_records \
for key, entry in record.items()]
header = list(set(raw_header))
if have_new_db:
sqldb.create_table(header)
else:
for record in sql_records:
for key, entry in record.items():
if not sqldb.has_column(key):
sqldb.add_column(key, entry.sqltype.upper())
for record in sql_records:
cmd = "insert into %s (%s) values (%s)"\
%(self.db_table,
",".join(list(record.keys())),
",".join(['?']*len(list(record.keys()))))
sqldb.execute(cmd,
tuple(entry.sqlval for entry in record.values()))
if excl and revision > 0 and sqldb.has_column('revision'):
old_idx_lst = [
str(x) for x, in sqldb.execute(
"select idx from calc where \
revision < ?", (
revision, ))
]
common.file_write(pj(self.calc_root, 'excl_push'),
'\n'.join(old_idx_lst))
sqldb.finish()
def unpack(fns):
for fn in fns:
common.system('gunzip %s' % fn)
def pack(fns):
for fn in fns:
common.system('gzip %s' % fn)
import os
import numpy as np
from matplotlib import pyplot as plt
from pwtools import parse, crys, constants, common, io
pj = os.path.join
if __name__ == '__main__':
tmpdir = '/tmp/rpdf_vmd_test/'
if not os.path.exists(tmpdir):
os.makedirs(tmpdir)
dct = {}
common.system("gunzip pw.out.gz")
traj = io.read_pw_md('pw.out')
common.system("gzip pw.out")
symbols = np.array(traj.symbols)
# O_Ca
msk1 = symbols == 'O'
msk2 = symbols == 'Ca'
amask = [msk1, msk2]
tmask = np.s_[-1]
dct['O:Ca:-1:-1'] = {'amask': amask, 'tmask': tmask}
tmask = np.s_[0:]
dct['O:Ca:0:-1'] = {'amask': amask, 'tmask': tmask}
# Ca_O
msk1 = symbols == 'Ca'
def test_pw_scf_out():
# ref data for Structure, all lengths in Ang, energy in eV
natoms = 2
symbols = ['Si', 'Si']
cell = np.array([[-2.71536701, 0. , 2.71536701],
[ 0. , 2.71536701, 2.71536701],
[-2.71536701, 2.71536701, 0. ]])
forces = np.array([[ 2.57110316, 5.14220632, 7.71330948],
[-2.57110316, -5.14220632, -7.71330948]]) # eV / Ang
nspecies = {'Si': 2}
mass = np.array([ 28.0855, 28.0855]) # amu
cryst_const = np.array([ 3.84010885, 3.84010885, 3.84010885, 60. ,
60. , 60. ])
symbols_unique = ['Si']
etot = -258.58148870118305 # eV
typat = [1, 1]
volume = 40.041985843396688 # Ang**3
stress = np.array([[ 9.825, 0. , 0. ],
[ 0. , 9.825, 0. ],
[ 0. , 0. , 9.825]]) # GPa
coords_frac = np.array([[ 0. , 0. , 0. ],
[ 0.25, 0.25, 0.25]])
pressure = 9.825 # GPa
coords = np.array([[ 0. , 0. , 0. ],
[-1.35768351, 1.35768351, 1.35768351]])
order = {'Si': 1}
alat = 10.2626 # Bohr
filename = 'files/pw.scf.out'
common.system('gunzip %s.gz' %filename)
# use_alat=False. Provide high-precision alat from outside (e.g.
# from pw.in instead of parsing and using low-precision value from pw.out).
# Here we use the same alat for the tests.
pp1 = PwSCFOutputFile(filename=filename,
use_alat=False, # alat=1.0
units={'length': alat*Bohr/Ang})
struct1 = pp1.get_struct() # pp1.parse() called here
assert_attrs_not_none(struct1)
assert_attrs_not_none(pp1)
assert pp1.scf_converged is True
assert alat == pp1.get_alat(True)
assert 1.0 == pp1.get_alat(False)
aaae(cryst_const, struct1.cryst_const)
aaae(cell, struct1.cell)
aaae(coords, struct1.coords)
aaae(coords_frac, struct1.coords_frac)
aaae(forces, struct1.forces)
aaae(stress, struct1.stress)
assert np.allclose(volume, struct1.volume)
assert np.allclose(etot, struct1.etot)
assert np.allclose(pressure, struct1.pressure)
# use_alat=True, alat = 10.2626 Bohr
pp2 = PwSCFOutputFile(filename=filename, use_alat=True)
struct2 = pp2.get_struct() # pp.parse() called here
assert_attrs_not_none(struct2)
assert_attrs_not_none(pp2)
assert np.allclose(alat, pp2.alat)
assert pp2.scf_converged is True
assert alat == pp2.get_alat(True) # Bohr
assert 1.0 == pp2.get_alat(False)
# Skip coords adn cell b/c they are modified by self.alat and
# pp1.alat = 1.0, pp2.alat = 10.2626
attr_lst = common.pop_from_list(pp1.attr_lst, ['coords', 'cell'])
adae(pp1.__dict__, pp2.__dict__, keys=attr_lst)
attr_lst = struct1.attr_lst
adae(struct1.__dict__, struct2.__dict__, keys=attr_lst)
pp3 = PwSCFOutputFile(filename=filename)
assert alat == pp3.get_alat() # self.use_alat=True default
common.system('gzip %s' %filename)
fourier_in_data = np.zeros((arr.shape[0], 7))
fourier_in_data[:, 0] = np.arange(arr.shape[0])
fourier_in_data[:, 4] = arr
fourier_in_data_fn = pj(fourier_dir, 'fourier_in_data_1d.txt')
fourier_out_data_fn = pj(fourier_dir, 'fourier_out_data_1d.txt')
fourier_in_fn = pj(fourier_dir, 'fourier_1d.in')
fourier_out_fn = pj(fourier_dir, 'fourier_1d.log')
fourier_in_txt = '%s\n%s\n%e\n%e\n%e\n%i' % (
fourier_in_data_fn, fourier_out_data_fn, dt / constants.th, 0,
fmax * fmax_extend_fac / (constants.c0 * 100), 1)
common.file_write(fourier_in_fn, fourier_in_txt)
# In order to make picky gfortrans happy, we need to use savetxt(...,
# fmt="%g") such that the first column is an integer (1 instead of
# 1.0000e+00).
np.savetxt(fourier_in_data_fn, fourier_in_data, fmt='%g')
common.system("%s < %s > %s" %
(fourier_exe, fourier_in_fn, fourier_out_fn))
fourier_out_data = np.loadtxt(fourier_out_data_fn)
f3 = fourier_out_data[:, 0] * (constants.c0 * 100) # 1/cm -> Hz
y3n = num.norm_int(fourier_out_data[:, 1], f3)
f1, y1n = cut_norm(y1, dt)
f2, y2n = cut_norm(y2, dt)
figs = []
axs = []
figs.append(plt.figure())
axs.append(figs[-1].add_subplot(111))
axs[-1].set_title('1d arr')
axs[-1].plot(f1, y1n, label='1d |fft(arr)|^2, direct')
axs[-1].plot(f2, y2n, label='1d |fft(acorr(arr))|, vacf')
elif sys.argv[1] == 'nvt':
ens_txt = nvt_txt
else:
raise StandardError("only nvt / npt allowed")
# create structure file
st = crys.Structure(coords_frac=np.array([[0.0]*3, [.5]*3]),
cryst_const=np.array([2.85]*3 + [60]*3),
symbols=['Al','N'])
io.write_lammps('lmp.struct', crys.scell(st,(3,3,3)))
# write lmp.in for nvt or npt
common.file_write('lmp.in', lmp_in_templ.format(ensemble=ens_txt))
# run lammps
common.system("mpirun -np 2 lammps < lmp.in", wait=True)
# read trajectory
trtxt_orig = io.read_lammps_md_txt('log.lammps')
trdcd = io.read_lammps_md_dcd('log.lammps')
# plotting
plots = mpl.prepare_plots(['coords', 'coords_frac', 'velocity',
'cryst_const', 'cell'])
for name,pl in plots.iteritems():
trtxt = trtxt_orig.copy()
print name
xtxt = getattr(trtxt, name)
setattr(trtxt, name, None)
xcalc = eval('trtxt.get_%s()' %name)
if name == 'cell':
def run(dr, none_attrs=[]):
dr = dr[:-1] if dr.endswith('/') else dr
archive = dr + '.tgz'
workdir = unpack_compressed(archive)
common.system('../bin/cut-cpmd.sh %s 20 > %s/cut-cpmd.log' %(workdir,
workdir))
fourier_in_data_fn = pj(fourier_dir, 'fourier_in_data_1d.txt')
fourier_out_data_fn = pj(fourier_dir, 'fourier_out_data_1d.txt')
fourier_in_fn = pj(fourier_dir, 'fourier_1d.in')
fourier_out_fn = pj(fourier_dir, 'fourier_1d.log')
fourier_in_txt = '%s\n%s\n%e\n%e\n%e\n%i' %(fourier_in_data_fn,
fourier_out_data_fn,
dt/constants.th,
0,
fmax*fmax_extend_fac/(constants.c0*100),
1)
common.file_write(fourier_in_fn, fourier_in_txt)
# In order to make picky gfortrans happy, we need to use savetxt(...,
# fmt="%g") such that the first column is an integer (1 instead of
# 1.0000e+00).
np.savetxt(fourier_in_data_fn, fourier_in_data, fmt='%g')
common.system("%s < %s > %s" %(fourier_exe, fourier_in_fn, fourier_out_fn))
fourier_out_data = np.loadtxt(fourier_out_data_fn)
f3 = fourier_out_data[:,0]*(constants.c0*100) # 1/cm -> Hz
y3n = num.norm_int(fourier_out_data[:,1], f3)
f1, y1n = cut_norm(y1, dt)
f2, y2n = cut_norm(y2, dt)
figs = []
axs = []
figs.append(plt.figure())
axs.append(figs[-1].add_subplot(111))
axs[-1].set_title('1d arr')
axs[-1].plot(f1, y1n, label='1d |fft(arr)|^2, direct')
axs[-1].plot(f2, y2n, label='1d |fft(acorr(arr))|, vacf')
XXXNKS
XXXKS
"""
matdyn_in_fn = 'matdyn.disp.in'
matdyn_freq_fn = 'matdyn.freq.disp'
mass_str = '\n'.join("amass(%i)=%e" %(ii+1,m) for ii,m in \
enumerate(st.mass_unique))
rules = {
'XXXNKS': ks_path.shape[0],
'XXXKS': common.str_arr(ks_path),
'XXXMASS': mass_str,
'XXXFNFREQ': matdyn_freq_fn,
}
txt = common.template_replace(templ_txt, rules, conv=True, mode='txt')
common.file_write(matdyn_in_fn, txt)
common.system("gunzip q2r.fc.gz; matdyn.x < %s; gzip q2r.fc" % matdyn_in_fn)
# parse matdyn output and plot
# define special points path, used in plot_dis() to plot lines at special
# points and make x-labels
sp = kpath.SpecialPointsPath(ks=sp_points,
ks_frac=sp_points_frac,
symbols=sp_symbols)
# QE 4.x, 5.x
ks, freqs = pwscf.read_matdyn_freq(matdyn_freq_fn)
fig, ax = kpath.plot_dis(kpath.get_path_norm(ks_path),
freqs,
sp,
marker='',
def pack(fns):
for fn in fns:
common.system('gzip %s' %fn)
scratch='/tmp',
filename='calc.templ/job.local',
home='/home/schmerler')
templates = [batch.FileTemplate(basename=x) for x in
['lmp.in', 'lmp.struct', 'lmp.struct.symbols']]
# rs-AlN
st = crys.Structure(coords_frac=np.array([[0.0]*3, [0.5]*3]),
symbols=['Al','N'],
cryst_const=np.array([2.78]*3 + [60]*3))
params_lst = []
for target_press in np.linspace(-20,20,15): # GPa, bar in lammps
params_lst.append([sql.SQLEntry(key='target_press', sqlval=target_press*1e4),
sql.SQLEntry(key='struct', sqlval=lammps.struct_str(st)),
sql.SQLEntry(key='symbols', sqlval='\n'.join(st.symbols)),
])
calc = batch.ParameterStudy(machines=local,
templates=templates,
params_lst=params_lst,
study_name='lammps_ev',
)
calc.write_input(sleep=0, backup=False, mode='w')
if not os.path.exists('calc'):
os.symlink('calc_local', 'calc')
common.system("cp -r potentials calc_local/")
def unpack(fns):
for fn in fns:
common.system('gunzip %s' %fn)
"""
matdyn_in_fn = 'matdyn.disp.in'
matdyn_freq_fn = 'matdyn.freq.disp'
mass_str = '\n'.join("amass(%i)=%e" %(ii+1,m) for ii,m in \
enumerate(st.mass_unique))
rules = {'XXXNKS': ks_path.shape[0],
'XXXKS': common.str_arr(ks_path),
'XXXMASS': mass_str,
'XXXFNFREQ': matdyn_freq_fn,
}
txt = common.template_replace(templ_txt,
rules,
conv=True,
mode='txt')
common.file_write(matdyn_in_fn, txt)
common.system("gunzip q2r.fc.gz; matdyn.x < %s; gzip q2r.fc" %matdyn_in_fn)
# parse matdyn output and plot
# define special points path, used in plot_dis() to plot lines at special
# points and make x-labels
sp = kpath.SpecialPointsPath(ks=sp_points, ks_frac=sp_points_frac,
symbols=sp_symbols)
# QE 4.x, 5.x
ks, freqs = pwscf.read_matdyn_freq(matdyn_freq_fn)
fig,ax = kpath.plot_dis(kpath.get_path_norm(ks_path), freqs, sp, marker='', ls='-', color='k')
# QE 5.x
##d = np.loadtxt(matdyn_freq_fn + '.gp')
##fig,ax = kpath.plot_dis(d[:,0], d[:,1:], sp, marker='', ls='-', color='k')
elif sys.argv[1] == 'nvt':
ens_txt = nvt_txt
else:
raise Exception("only nvt / npt allowed")
# create structure file
st = crys.Structure(coords_frac=np.array([[0.0]*3, [.5]*3]),
cryst_const=np.array([2.85]*3 + [60]*3),
symbols=['Al','N'])
io.write_lammps('lmp.struct', crys.scell(st,(3,3,3)))
# write lmp.in for nvt or npt
common.file_write('lmp.in', lmp_in_templ.format(ensemble=ens_txt))
# run lammps
common.system("mpirun -np 2 lammps < lmp.in", wait=True)
# read trajectory
trtxt_orig = io.read_lammps_md_txt('log.lammps')
trdcd = io.read_lammps_md_dcd('log.lammps')
# plotting
plots = mpl.prepare_plots(['coords', 'coords_frac', 'velocity',
'cryst_const', 'cell'])
for name,pl in plots.items():
trtxt = trtxt_orig.copy()
print(name)
xtxt = getattr(trtxt, name)
setattr(trtxt, name, None)
xcalc = eval('trtxt.get_%s()' %name)
if name == 'cell':
def write_input(self, mode='a', backup=True, sleep=0, excl=True):
"""
Create calculation dir(s) for each parameter set and write input files
based on ``templates``. Write sqlite database storing all relevant
parameters. Write (bash) shell script to start all calculations (run
locally or submitt batch job file, depending on ``machine.subcmd``).
Parameters
----------
mode : str, optional
Fine tune how to write input files (based on ``templates``) to calc
dirs calc_foo/0/, calc_foo/1/, ... . Note that this doesn't change
the base dir calc_foo at all, only the subdirs for each calc.
{'a', 'w'}
| 'a': Append mode (default). If a previous database is found, then
| subsequent calculations are numbered based on the last 'idx'.
| calc_foo/0 # old
| calc_foo/1 # old
| calc_foo/2 # new
| calc_foo/3 # new
| 'w': Write mode. The target dirs are purged and overwritten. Also,
| the database (self.dbfn) is overwritten. Use this to
| iteratively tune your inputs, NOT for working on already
| present results!
| calc_foo/0 # new
| calc_foo/1 # new
backup : bool, optional
Before writing anything, do a backup of self.calc_dir if it already
exists.
sleep : int, optional
For the script to start (submitt) all jobs: time in seconds for the
shell sleep(1) commmand.
excl : bool
If in append mode, a file <calc_root>/excl_push with all indices of
calculations from old revisions is written. Can be used with
``rsync --exclude-from=excl_push`` when pushing appended new
calculations to a cluster.
"""
assert mode in ['a', 'w'], "Unknown mode: '%s'" %mode
if os.path.exists(self.dbfn):
if backup:
common.backup(self.dbfn)
if mode == 'w':
os.remove(self.dbfn)
have_new_db = not os.path.exists(self.dbfn)
common.makedirs(self.calc_root)
# this call creates a file ``self.dbfn`` if it doesn't exist
sqldb = SQLiteDB(self.dbfn, table=self.db_table)
# max_idx: counter for calc dir numbering
revision = 0
if have_new_db:
max_idx = -1
else:
if mode == 'a':
if sqldb.has_column('idx'):
max_idx = sqldb.execute("select max(idx) from %s" \
%self.db_table).fetchone()[0]
else:
raise StandardError("database '%s': table '%s' has no "
"column 'idx', don't know how to number calcs"
%(self.dbfn, self.db_table))
if sqldb.has_column('revision'):
revision = int(sqldb.get_single("select max(revision) \
from %s" %self.db_table)) + 1
elif mode == 'w':
max_idx = -1
sql_records = []
hostnames = []
for imach, machine in enumerate(self.machines):
hostnames.append(machine.hostname)
calc_dir = pj(self.calc_root, self.calc_dir_prefix + \
'_%s' %machine.hostname)
if os.path.exists(calc_dir):
if backup:
common.backup(calc_dir)
if mode == 'w':
common.system("rm -r %s" %calc_dir, wait=True)
run_txt = "here=$(pwd)\n"
for _idx, params in enumerate(self.params_lst):
params = common.flatten(params)
idx = max_idx + _idx + 1
calc_subdir = pj(calc_dir, str(idx))
extra_dct = \
{'revision': revision,
'study_name': self.study_name,
'idx': idx,
'calc_name' : self.study_name + "_run%i" %idx,
}
extra_params = [SQLEntry(key=key, sqlval=val) for key,val in \
extra_dct.iteritems()]
# templates[:] to copy b/c they may be modified in Calculation
calc = Calculation(machine=machine,
templates=self.templates[:],
params=params + extra_params,
calc_dir=calc_subdir,
)
if mode == 'w' and os.path.exists(calc_subdir):
shutil.rmtree(calc_subdir)
calc.write_input()
run_txt += "cd %i && %s %s && cd $here && sleep %i\n" %(idx,\
machine.subcmd, machine.get_jobfile_basename(), sleep)
if imach == 0:
sql_records.append(calc.get_sql_record())
common.file_write(pj(calc_dir, 'run.sh'), run_txt)
for record in sql_records:
record['hostname'] = SQLEntry(sqlval=','.join(hostnames))
# for incomplete parameters: collect header parts from all records and
# make a set = unique entries
raw_header = [(key, entry.sqltype.upper()) for record in sql_records \
for key, entry in record.iteritems()]
header = list(set(raw_header))
if have_new_db:
sqldb.create_table(header)
else:
for record in sql_records:
for key, entry in record.iteritems():
if not sqldb.has_column(key):
sqldb.add_column(key, entry.sqltype.upper())
for record in sql_records:
cmd = "insert into %s (%s) values (%s)"\
%(self.db_table,
",".join(record.keys()),
",".join(['?']*len(record.keys())))
sqldb.execute(cmd, tuple(entry.sqlval for entry in record.itervalues()))
if excl and revision > 0 and sqldb.has_column('revision'):
old_idx_lst = [str(x) for x, in sqldb.execute("select idx from calc where \
revision < ?", (revision,))]
common.file_write(pj(self.calc_root, 'excl_push'),
'\n'.join(old_idx_lst))
sqldb.finish()
templates = [
batch.FileTemplate(basename=x)
for x in ['lmp.in', 'lmp.struct', 'lmp.struct.symbols']
]
# rs-AlN
st = crys.Structure(coords_frac=np.array([[0.0] * 3, [0.5] * 3]),
symbols=['Al', 'N'],
cryst_const=np.array([2.78] * 3 + [60] * 3))
params_lst = []
for target_press in np.linspace(-20, 20, 15): # GPa, bar in lammps
params_lst.append([
sql.SQLEntry(key='target_press', sqlval=target_press * 1e4),
sql.SQLEntry(key='struct', sqlval=lammps.struct_str(st)),
sql.SQLEntry(key='symbols', sqlval='\n'.join(st.symbols)),
])
calc = batch.ParameterStudy(
machines=local,
templates=templates,
params_lst=params_lst,
study_name='lammps_ev',
)
calc.write_input(sleep=0, backup=False, mode='w')
if not os.path.exists('calc'):
os.symlink('calc_local', 'calc')
common.system("cp -r potentials calc_local/")
def test_pw_more_forces():
fac = Ry / eV / Bohr * Ang
# MD: london=.true.
filename = 'files/pw.md_london.out'
common.system('gunzip %s.gz' %filename)
natoms = 141
nstep = 10
# traj case
pp = PwMDOutputFile(filename=filename)
tr = pp.get_traj()
assert tr.natoms == natoms
assert tr.forces.shape == (nstep,natoms,3)
assert tr.coords.shape == (nstep,natoms,3)
assert pp._forces_raw.shape == (nstep+1,2*natoms,3)
assert np.allclose(tr.forces, pp._forces_raw[1:,:natoms,:] * fac)
# scf case, return only 1st step
pp = PwSCFOutputFile(filename=filename)
st = pp.get_struct()
assert st.natoms == natoms
assert st.forces.shape == (natoms,3)
assert st.coords.shape == (natoms,3)
assert pp._forces_raw.shape == (nstep+1,2*natoms,3)
assert np.allclose(st.forces, pp._forces_raw[0,:natoms,:] * fac)
common.system('gzip %s' %filename)
# SCF: verbosity='high' + london=.true.
filename = 'files/pw.scf_verbose_london.out'
common.system('gunzip %s.gz' %filename)
natoms = 4
nstep = 1
pp = PwSCFOutputFile(filename=filename)
st = pp.get_struct()
assert st.natoms == natoms
assert st.forces.shape == (natoms,3)
assert st.coords.shape == (natoms,3)
assert pp._forces_raw.shape == (nstep, 8*natoms,3)
assert np.allclose(st.forces, pp._forces_raw[0,:natoms,:] * fac)
common.system('gzip %s' %filename)
# MD: verbosity='high' + natoms=1
filename = 'files/pw.md_one_atom.out'
common.system('gunzip %s.gz' %filename)
natoms = 1
nstep = 4
# traj case
pp = PwMDOutputFile(filename=filename)
tr = pp.get_traj()
assert tr.natoms == natoms
assert tr.forces.shape == (nstep,natoms,3)
assert tr.coords.shape == (nstep,natoms,3)
assert pp._forces_raw.shape == (nstep+1,7*natoms,3)
assert np.allclose(tr.forces, pp._forces_raw[1:,:natoms,:] * fac)
# scf case, return only 1st step
pp = PwSCFOutputFile(filename=filename)
st = pp.get_struct()
assert st.natoms == natoms
assert st.forces.shape == (natoms,3)
assert st.coords.shape == (natoms,3)
assert pp._forces_raw.shape == (nstep+1,7*natoms,3)
assert np.allclose(st.forces, pp._forces_raw[0,:natoms,:] * fac)
common.system('gzip %s' %filename)
def test_pw_scf_out():
# ref data for Structure, all lengths in Ang, energy in eV
natoms = 2
symbols = ['Si', 'Si']
cell = np.array([[-2.71536701, 0.,
2.71536701], [0., 2.71536701, 2.71536701],
[-2.71536701, 2.71536701, 0.]])
forces = np.array([[2.57110316, 5.14220632, 7.71330948],
[-2.57110316, -5.14220632, -7.71330948]]) # eV / Ang
nspecies = {'Si': 2}
mass = np.array([28.0855, 28.0855]) # amu
cryst_const = np.array([3.84010885, 3.84010885, 3.84010885, 60., 60., 60.])
symbols_unique = ['Si']
etot = -258.58148870118305 # eV
typat = [1, 1]
volume = 40.041985843396688 # Ang**3
stress = np.array([[9.825, 0., 0.], [0., 9.825, 0.], [0., 0.,
9.825]]) # GPa
coords_frac = np.array([[0., 0., 0.], [0.25, 0.25, 0.25]])
pressure = 9.825 # GPa
coords = np.array([[0., 0., 0.], [-1.35768351, 1.35768351, 1.35768351]])
order = {'Si': 1}
alat = 10.2626 # Bohr
filename = 'files/pw.scf.out'
common.system('gunzip %s.gz' % filename)
# use_alat=False. Provide high-precision alat from outside (e.g.
# from pw.in instead of parsing and using low-precision value from pw.out).
# Here we use the same alat for the tests.
pp1 = PwSCFOutputFile(
filename=filename,
use_alat=False, # alat=1.0
units={'length': alat * Bohr / Ang})
struct1 = pp1.get_struct() # pp1.parse() called here
assert_attrs_not_none(struct1)
assert_attrs_not_none(pp1)
assert pp1.scf_converged is True
assert alat == pp1.get_alat(True)
assert 1.0 == pp1.get_alat(False)
aaae(cryst_const, struct1.cryst_const)
aaae(cell, struct1.cell)
aaae(coords, struct1.coords)
aaae(coords_frac, struct1.coords_frac)
aaae(forces, struct1.forces)
aaae(stress, struct1.stress)
assert np.allclose(volume, struct1.volume)
assert np.allclose(etot, struct1.etot)
assert np.allclose(pressure, struct1.pressure)
# use_alat=True, alat = 10.2626 Bohr
pp2 = PwSCFOutputFile(filename=filename, use_alat=True)
struct2 = pp2.get_struct() # pp.parse() called here
assert_attrs_not_none(struct2)
assert_attrs_not_none(pp2)
assert np.allclose(alat, pp2.alat)
assert pp2.scf_converged is True
assert alat == pp2.get_alat(True) # Bohr
assert 1.0 == pp2.get_alat(False)
# Skip coords adn cell b/c they are modified by self.alat and
# pp1.alat = 1.0, pp2.alat = 10.2626
attr_lst = common.pop_from_list(pp1.attr_lst, ['coords', 'cell'])
adae(pp1.__dict__, pp2.__dict__, keys=attr_lst)
attr_lst = struct1.attr_lst
adae(struct1.__dict__, struct2.__dict__, keys=attr_lst)
pp3 = PwSCFOutputFile(filename=filename)
assert alat == pp3.get_alat() # self.use_alat=True default
common.system('gzip %s' % filename)