forked from tongzhugroup/mddatasetbuilder
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datasetbuilder.py
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datasetbuilder.py
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"""MDDatasetBuilder.
Run 'datasetbuilder -h' for more details.
"""
__author__ = "Jinzhe Zeng"
__email__ = "jzzeng@stu.ecnu.edu.cn"
__update__ = '2019-02-01'
__date__ = '2018-07-18'
import argparse
import gc
import itertools
import logging
import os
import tempfile
import time
import pickle
from collections import Counter, defaultdict
from multiprocessing import Pool, Semaphore, cpu_count
import numpy as np
import pybase64
import lz4.frame
from ase.data import atomic_numbers
from ase.io import write as write_xyz
from pkg_resources import DistributionNotFound, get_distribution
from sklearn import preprocessing
from sklearn.cluster import MiniBatchKMeans
from tqdm import tqdm
from .detect import Detect
try:
__version__ = get_distribution(__name__).version
except DistributionNotFound:
# package is not installed
__version__ = ''
class DatasetBuilder:
"""Dataset Builder."""
def __init__(
self, atomname=None,
clusteratom=None, bondfilename=None,
dumpfilename="dump.reaxc", dataset_name="md", cutoff=5,
stepinterval=1, n_clusters=10000,
qmkeywords="%nproc=4\n#mn15/6-31g(d,p) force", nproc=None, pbc=True,
fragment=True, errorfilename=None, errorlimit=0.):
"""Init the builder."""
print(__doc__)
print(f"Author:{__author__} Email:{__email__}")
atomname = np.array(
atomname) if atomname else np.array(["C", "H", "O"])
self.crddetector = Detect.gettype('dump')(
filename=dumpfilename, atomname=atomname, pbc=pbc, errorfilename=errorfilename, errorlimit=errorlimit)
if bondfilename is None:
self.bonddetector = self.crddetector
else:
self.bonddetector = Detect.gettype('bond')(
filename=bondfilename, atomname=atomname, pbc=pbc)
self.dataset_dir = f"dataset_{dataset_name}"
self.xyzfilename = dataset_name
self.clusteratom = clusteratom if clusteratom else atomname
self.atombondtype = []
self.stepinterval = stepinterval
self.nproc = nproc if nproc else cpu_count()
self.cutoff = cutoff
self.n_clusters = n_clusters
self.writegjf = True
self.gjfdir = f'{self.dataset_dir}_gjf'
self.qmkeywords = qmkeywords
if type(self.qmkeywords) == str:
self.qmkeywords = [self.qmkeywords]
self.fragment = fragment
self._coulumbdiag = dict(map(lambda symbol: (
symbol, atomic_numbers[symbol]**2.4/2), atomname))
self._nstructure = 0
self.bondtyperestore = {}
self.errorfilename = errorfilename
def builddataset(self, writegjf=True):
"""Build a dataset."""
self.writegjf = writegjf
timearray = [time.time()]
with tempfile.TemporaryDirectory() as self.trajatom_dir:
for runstep in range(3):
if runstep == 0:
self._readtimestepsbond()
elif runstep == 1:
with open(os.path.join(self.trajatom_dir, 'chooseatoms'), 'wb') as f:
for bondtype in self.atombondtype:
self._writecoulumbmatrix(bondtype, f)
gc.collect()
elif runstep == 2:
self._mkdir(self.dataset_dir)
if self.writegjf:
self._mkdir(self.gjfdir)
self._writexyzfiles()
gc.collect()
timearray.append(time.time())
logging.info(
f"Step {len(timearray)-1} Done! Time consumed (s): {timearray[-1]-timearray[-2]:.3f}")
@classmethod
def _produce(cls, semaphore, producelist, parameter):
for item in producelist:
semaphore.acquire()
yield item, parameter
def _readtimestepsbond(self):
# added on 2018-12-15
stepatomfiles = {}
self._mkdir(self.trajatom_dir)
with Pool(self.nproc, maxtasksperchild=10000) as pool:
semaphore = Semaphore(360)
results = pool.imap_unordered(
self.bonddetector.readatombondtype,
self._produce(semaphore, enumerate(zip(self.lineiter(self.bonddetector), self.erroriter(
)) if self.errorfilename is not None else self.lineiter(self.bonddetector)), (self.errorfilename is not None)),
100)
nstep = 0
for d, step in tqdm(
results, desc="Read trajectory", unit="timestep"):
for bondtypebytes, atomids in d.items():
bondtype = self._bondtype(bondtypebytes)
if bondtype not in self.atombondtype:
self.atombondtype.append(bondtype)
stepatomfiles[bondtype] = open(os.path.join(
self.trajatom_dir, f'stepatom.{bondtype}'), 'wb')
stepatomfiles[bondtype].write(
self.listtobytes([step, atomids]))
semaphore.release()
nstep += 1
pool.close()
self._nstep = nstep
for stepatomfile in stepatomfiles.values():
stepatomfile.close()
pool.join()
def _writecoulumbmatrix(self, trajatomfilename, fc):
self.dstep = {}
with open(os.path.join(self.trajatom_dir, f"stepatom.{trajatomfilename}"), 'rb') as f:
for line in f:
s = self.bytestolist(line)
self.dstep[s[0]] = s[1]
n_atoms = sum(map(len, self.dstep.values()))
if n_atoms > self.n_clusters:
# undersampling
max_counter = Counter()
stepatom = np.zeros((n_atoms, 2), dtype=int)
feedvector = np.zeros((n_atoms, 0))
vector_elements = defaultdict(list)
with Pool(self.nproc, maxtasksperchild=10000) as pool:
semaphore = Semaphore(360)
results = pool.imap_unordered(
self._writestepmatrix, self._produce(semaphore,
enumerate(self.lineiter(self.crddetector)), None), 100)
j = 0
for result in tqdm(
results, desc=trajatomfilename, total=self._nstep,
unit="timestep"):
for stepatoma, vector, symbols_counter in result:
stepatom[j] = stepatoma
for element in (
symbols_counter - max_counter).elements():
vector_elements[element].append(
feedvector.shape[1])
feedvector = np.pad(
feedvector, ((0, 0),
(0, 1)),
'constant',
constant_values=(0, self._coulumbdiag
[element]))
feedvector[j, sum(map(
lambda x:vector_elements[x[0]][: x[1]], symbols_counter.items()), [])] = vector
max_counter |= symbols_counter
j += 1
semaphore.release()
logging.info(
f"Max counter of {trajatomfilename} is {max_counter}")
pool.close()
choosedindexs = self._clusterdatas(
np.sort(feedvector), n_clusters=self.n_clusters)
pool.join()
else:
stepatom = np.array([[u, vv]
for u, v in self.dstep.items() for vv in v])
choosedindexs = range(n_atoms)
fc.write(self.listtobytes(stepatom[choosedindexs]))
self._nstructure += len(choosedindexs)
def _writestepmatrix(self, item):
(step, _), _ = item
results = []
if step in self.dstep:
step_atoms, _ = self.crddetector.readcrd(item)
for atoma in self.dstep[step]:
# atom ID starts from 1
distances = step_atoms.get_distances(
atoma-1, range(len(step_atoms)), mic=True)
cutoffatomid = np.where(distances < self.cutoff)
cutoffatoms = step_atoms[cutoffatomid]
symbols = cutoffatoms.get_chemical_symbols()
results.append(
(np.array([step, atoma]),
self._calcoulumbmatrix(cutoffatoms),
Counter(symbols)))
return results
def _calcoulumbmatrix(self, atoms):
# https://github.com/crcollins/molml/blob/master/molml/utils.py
top = np.outer(atoms.numbers, atoms.numbers).astype(np.float64)
r = atoms.get_all_distances(mic=True)
diag = np.array(
list(map(self._coulumbdiag.get, atoms.get_chemical_symbols())))
with np.errstate(divide='ignore', invalid='ignore'):
np.divide(top, r, top)
np.fill_diagonal(top, diag)
top[top == np.Infinity] = 0
top[np.isnan(top)] = 0
return np.linalg.eigh(top)[0]
@classmethod
def _clusterdatas(cls, X, n_clusters):
min_max_scaler = preprocessing.MinMaxScaler()
X = np.array(min_max_scaler.fit_transform(X))
clus = MiniBatchKMeans(n_clusters=n_clusters, init_size=(
min(3*n_clusters, len(X))))
labels = clus.fit_predict(X)
chooseindex = {}
choosenum = {}
for index, label in enumerate(labels):
if label in chooseindex:
r = np.random.randint(0, choosenum[label]+1)
if r == 0:
chooseindex[label] = index
choosenum[label] += 1
else:
chooseindex[label] = index
choosenum[label] = 0
index = np.array(list(chooseindex.values()))
return index
@classmethod
def _mkdir(cls, path):
try:
os.makedirs(path)
except OSError:
pass
def _writexyzfiles(self):
self.dstep = defaultdict(list)
with open(os.path.join(self.trajatom_dir, "chooseatoms"), 'rb') as fc, Pool(self.nproc, maxtasksperchild=10000) as pool, tqdm(desc="Write structures", unit="structure", total=self._nstructure) as pbar:
semaphore = Semaphore(360)
typecounter = Counter()
for typefile, trajatomfilename in zip(fc, self.atombondtype):
for step, atoma in self.bytestolist(typefile):
self.dstep[step].append(
(atoma, trajatomfilename,
typecounter[trajatomfilename],
typecounter['total']))
typecounter[trajatomfilename] += 1
typecounter['total'] += 1
self.maxlength = len(str(self.n_clusters))
foldernum = self._nstructure//1000 + 1
self.foldermaxlength = len(str(foldernum))
foldernames = list(map(lambda i: str(i).zfill(
self.foldermaxlength), range(foldernum)))
for folder in foldernames:
self._mkdir(os.path.join(self.dataset_dir, folder))
if self.writegjf:
for folder in foldernames:
self._mkdir(os.path.join(self.gjfdir, folder))
crditer = self.lineiter(self.crddetector)
if self.crddetector is self.bonddetector:
lineiter = crditer
else:
bonditer = self.lineiter(self.bonddetector)
lineiter = zip(crditer, bonditer)
results = pool.imap_unordered(self._writestepxyzfile, self._produce(
semaphore, enumerate(lineiter), None), 100)
for result in results:
pbar.update(result)
semaphore.release()
pool.close()
pool.join()
def _convertgjf(self, gjffilename, takenatomidindex, atoms_whole):
buff = []
# only support CHO, multiplicity of oxygen is 3
multiplicities = list(map(lambda atoms: (3 if atoms_whole[atoms].get_chemical_symbols() == [
"O", "O"] else(Counter(atoms_whole[atoms].get_chemical_symbols())['H'] % 2 + 1)), takenatomidindex))
multiplicity_whole = sum(multiplicities)-len(takenatomidindex)+1
multiplicity_whole_str = f'0 {multiplicity_whole}'
qmkeywords = self.qmkeywords
title = '\nGenerated by MDDatasetMaker (Author: Jinzhe Zeng)\n'
if len(qmkeywords) > 1:
connect = '\n--link1--\n'
chk = [f'%chk={os.path.splitext(os.path.basename(gjffilename))[0]}.chk']
else:
chk = []
if len(takenatomidindex) == 1 or not self.fragment:
buff.extend((*chk, qmkeywords[0], title, multiplicity_whole_str))
buff.extend(map(lambda atom: "{} {:.5f} {:.5f} {:.5f}".format(
atom.symbol, *atom.position), atoms_whole))
else:
qmkeywords[0] = f'{qmkeywords[0]} guess=fragment={len(takenatomidindex)}'
multiplicities_str = multiplicity_whole_str + ' '.join(
[f'0 {multiplicity}' for multiplicity in multiplicities])
buff.extend((*chk, qmkeywords[0], title, multiplicities_str))
for index, atoms in enumerate(takenatomidindex, 1):
buff.extend(map(lambda atom: '{}(Fragment={}) {:.5f} {:.5f} {:.5f}'.format(
atom.symbol, index, *atom.position), atoms_whole[atoms]))
for kw in itertools.islice(qmkeywords, 1, None):
buff.extend((connect, *chk, kw,
title, f'0 {multiplicity_whole}', '\n'))
buff.append('\n')
with open(gjffilename, 'w') as f:
f.write('\n'.join(buff))
def _writestepxyzfile(self, item):
(step, lines), _ = item
results = 0
if step in self.dstep:
if len(lines) == 2:
step_atoms, _ = self.crddetector.readcrd(
((step, lines[0]), None))
molecules = self.bonddetector.readmolecule(lines[1])
else:
molecules, step_atoms = self.bonddetector.readmolecule(lines)
for atoma, trajatomfilename, itype, itotal in self.dstep[step]:
# update counter
folder = str(itotal//1000).zfill(self.foldermaxlength)
atomtypenum = str(itype).zfill(self.maxlength)
# atom ID starts from 1
distances = step_atoms.get_distances(
atoma-1, range(len(step_atoms)), mic=True)
cutoffatomid = np.where(distances < self.cutoff)
# make cutoff atoms in molecules
takenatomids = []
takenatomidindex = []
idsum = 0
for mo in molecules:
mol_atomid = np.array(mo)
if np.any(np.isin(mol_atomid, cutoffatomid)):
takenatomids.append(mol_atomid)
takenatomidindex.append(
range(idsum, idsum+len(mol_atomid)))
idsum += len(mol_atomid)
cutoffatoms = step_atoms[np.concatenate(takenatomids)]
cutoffatoms.wrap(
center=step_atoms[atoma-1].position /
cutoffatoms.get_cell_lengths_and_angles()[0: 3],
pbc=cutoffatoms.get_pbc())
write_xyz(
os.path.join(
self.dataset_dir, folder,
f'{self.xyzfilename}_{trajatomfilename}_{atomtypenum}.xyz'),
cutoffatoms, format='xyz')
if self.writegjf:
self._convertgjf(
os.path.join(
self.gjfdir, folder,
f'{self.xyzfilename}_{trajatomfilename}_{atomtypenum}.gjf'),
takenatomidindex, cutoffatoms)
results += 1
return results
def _bondtype(self, typebytes):
if typebytes in self.bondtyperestore:
return self.bondtyperestore[typebytes]
typetuple = pickle.loads(typebytes)
typestr = f"{typetuple[0]}{''.join(map(str,typetuple[1]))}"
self.bondtyperestore[typebytes] = typestr
return typestr
@classmethod
def _compress(cls, x, isbytes=False):
"""Compress the line.
This function reduces IO overhead to speed up the program.
"""
if isbytes:
return pybase64.b64encode(
lz4.frame.compress(x)) + b'\n'
return pybase64.b64encode(lz4.frame.compress(
x.encode())) + b'\n'
@classmethod
def _decompress(cls, x, isbytes=False):
"""Decompress the line."""
if isbytes:
return lz4.frame.decompress(pybase64.b64decode(
x.strip(),
validate=True))
return lz4.frame.decompress(pybase64.b64decode(
x.strip(),
validate=True)).decode()
@classmethod
def listtobytes(cls, x):
return cls._compress(pickle.dumps(x), isbytes=True)
@classmethod
def bytestolist(cls, x):
return pickle.loads(cls._decompress(x, isbytes=True))
def lineiter(self, detector):
fns = [detector.filename] if isinstance(
detector.filename, str) else detector.filename
for fn in fns:
with open(fn) as f:
it = itertools.islice(itertools.zip_longest(
*[f] * detector.steplinenum), 0, None, self.stepinterval)
for line in it:
yield line
def erroriter(self):
fns = [self.errorfilename] if isinstance(
self.errorfilename, str) else self.errorfilename
for fn in fns:
with open(fn) as f:
it = itertools.islice(f, 1, None)
for line in it:
yield line
def _commandline():
parser = argparse.ArgumentParser(description='MDDatasetBuilder')
parser.add_argument('-d', '--dumpfile', nargs='*',
help='Input dump file, e.g. dump.reaxc', required=True)
parser.add_argument(
'-b', '--bondfile', nargs='*', help='Input bond file, e.g. bonds.reaxc')
parser.add_argument('-a', '--atomname',
help='Atomic names in the trajectory, e.g. C H O',
nargs='*', required=True)
parser.add_argument(
'-np', '--nproc', help='Number of processes', type=int)
parser.add_argument(
'-c', '--cutoff', help='Cutoff radius (default is 5.0)', type=float,
default=5.)
parser.add_argument(
'-i', '--interval', help='Step interval (default is 1)', type=int,
default=1)
parser.add_argument(
'-s', '--size', help='Dataset size (default is 10,000)', type=int,
default=10000)
parser.add_argument(
'-k', '--qmkeywords',
help='QM keywords (default is %%nproc=4 #mn15/6-31g**)',
default="%nproc=4\n#mn15/6-31g**")
parser.add_argument(
'-n', '--name', help='Dataset name (default is md)', default="md")
parser.add_argument(
'--errorfile', help='Error file generated by modified DeePMD', nargs='*')
parser.add_argument(
'-e', '--errorlimit', help='Error Limit', type=float, default=0.)
args = parser.parse_args()
DatasetBuilder(
atomname=args.atomname, bondfilename=args.bondfile,
dumpfilename=args.dumpfile, dataset_name=args.name, cutoff=args.cutoff,
stepinterval=args.interval, n_clusters=args.size,
qmkeywords=args.qmkeywords, nproc=args.nproc,
errorfilename=args.errorfile, errorlimit=args.errorlimit
).builddataset()