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Commit 4311b695 authored by mohammad's avatar mohammad
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simplified sampler

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megatron/data/sampler.py 0 → 100644
View file @ 4311b695
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Megatorn Sampler."""
class MegatronPretrainingSampler:
def __init__(self, total_samples, consumed_samples,
global_batch_size, rank, world_size):
# Keep a copy of input params for later use.
self.total_samples = total_samples
self.consumed_samples = consumed_samples
self.global_batch_size = global_batch_size
self.rank = rank
# Sanity checks.
assert self.total_samples > 0, \
'no sample to consume: {}'.format(self.total_samples)
assert self.consumed_samples < self.total_samples, \
'no samples left to consume: {}, {}'.format(self.consumed_samples,
self.total_samples)
assert self.global_batch_size > 0, \
'Unexpected global batch size: {}'.format(self.global_batch_size)
assert world_size > 0,\
'non zero world size is expected: {}'.format(world_size)
assert self.rank < world_size,\
'rank should be smaller than world size: {}, {}'.format(
self.rank, world_size)
# Batch size per rank.
assert self.global_batch_size % world_size == 0,\
'global batch size must be divisible by world size: {}, {}'.format(
self.global_batch_size, world_size)
self.batch_size_per_rank = self.global_batch_size // world_size
def __len__(self):
return self.total_samples
def __iter__(self):
batch = []
# Last batch if not complete will be dropped.
for idx in range(self.consumed_samples, self.total_samples):
batch.append(idx)
if len(batch) == self.global_batch_size:
start_idx = self.rank * self.batch_size_per_rank
end_idx = start_idx + self.batch_size_per_rank
yield batch[start_idx:end_idx]
batch = []
megatron/data/samplers.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Batch samplers that work with either random or sequential data samplers."""
import torch
from torch.utils import data
class RandomSampler(data.sampler.Sampler):
"""Based off of pytorch RandomSampler and DistributedSampler. Essentially
a RandomSampler, but this class lets the user set an epoch like
DistributedSampler Samples elements randomly. If without replacement, then
sample from a shuffled dataset. If with replacement, then user can
specify ``num_samples`` to draw.
Arguments:
data_source (Dataset): dataset to sample from
num_samples (int): number of samples to draw, default=len(dataset)
replacement (bool): samples are drawn with replacement if ``True``,
default=False
"""
def __init__(self, data_source, replacement=False, num_samples=None):
self.data_source = data_source
self.replacement = replacement
self._num_samples = num_samples
self.epoch = -1
if self._num_samples is not None and replacement is False:
raise ValueError("With replacement=False, num_samples should not "
"be specified, since a random permute will be "
"performed.")
if not isinstance(self.num_samples, int) or self.num_samples <= 0:
raise ValueError("num_samples should be a positive integer "
"value, but got num_samples={}".format(
self.num_samples))
if not isinstance(self.replacement, bool):
raise ValueError("replacement should be a boolean value, but got "
"replacement={}".format(self.replacement))
@property
def num_samples(self):
# dataset size might change at runtime
if self._num_samples is None:
return len(self.data_source)
return self._num_samples
def __iter__(self):
n = len(self.data_source)
g = torch.Generator()
if self.epoch >= 0:
g.manual_seed(self.epoch)
if self.replacement:
return iter(torch.randint(high=n, size=(self.num_samples,),
dtype=torch.int64, generator=g).tolist())
return iter(torch.randperm(n, generator=g).tolist())
def __len__(self):
return self.num_samples
def set_epoch(self, epoch):
self.epoch = epoch
class DistributedBatchSampler(data.sampler.BatchSampler):
"""Similar to normal implementation of distributed sampler, except
implementation is at the batch sampler level, instead of just the
sampler level. This allows wrapping of arbitrary data samplers
(sequential, random, WeightedRandomSampler, etc.) with this batch
sampler.
The `interleave` argument specifies how to distribute a batch. A value
of True combined with the above random sampler is equivalent to pytorch's
torch.utils.data.distributed.DistributedSampler.
For the following batch [0,1,2,3,4,5,6,7] and data parallelism of 2
specifying True will result in the following samples for each gpu:
GPU0: [0,2,4,6] GPU1: [1,3,5,7]
specifying False will result in the following samples:
GPU0: [0,1,2,3] GPU1: [4,5,6,7]"""
def __init__(self, sampler, batch_size, drop_last, rank=-1,
world_size=2, wrap_last=False, interleave=False):
super(DistributedBatchSampler, self).__init__(sampler, batch_size,
drop_last)
if rank == -1:
assert False, 'should not be here'
rank = torch.distributed.get_rank()
self.rank = rank
self.world_size = world_size
self.sampler.wrap_around = 0
self.wrap_around = 0
self.wrap_last = wrap_last
self.start_iter = 0
self.interleave = interleave
def __iter__(self):
batch = []
i = 0
for idx in self.data_iterator(self.sampler, wrap_around=False):
batch.append(idx)
if len(batch) == self.batch_size:
tbatch = self._batch(batch)
if i >= self.start_iter:
yield tbatch
self.start_iter = 0
i += 1
batch = []
batch_len = len(batch)
if batch_len > 0 and not self.drop_last:
if self.wrap_last:
self.sampler.wrap_around -= (self.batch_size)
self.wrap_around += (len(batch))
self.wrap_around %= self.batch_size
yield self._batch(batch)
if self.wrap_last:
self.sampler.wrap_around += self.batch_size
def data_iterator(self, _iter, wrap_around=False):
"""iterates through data and handles wrap around"""
for i, idx in enumerate(_iter):
if i < self.wrap_around % self.batch_size:
continue
if wrap_around:
self.wrap_around += 1
self.wrap_around %= self.batch_size
yield idx
def _batch(self, batch):
"""extracts samples only pertaining to this worker's batch"""
if self.interleave:
return batch[self.rank:self.batch_size:self.world_size]
start = self.rank * self.batch_size // self.world_size
end = (self.rank + 1) * self.batch_size // self.world_size
return batch[start:end]
megatron/deprecated_data_utils/__init__.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""utils for creating datasets"""
import os
import math
import torch
from .samplers import DistributedBatchSampler
from .datasets import json_dataset, csv_dataset, split_ds, ConcatDataset, SplitDataset, bert_sentencepair_dataset, GPT2Dataset
from .lazy_loader import exists_lazy, make_lazy, lazy_array_loader
from .tokenization import Tokenization, CommandToken, Tokenizer, CharacterLevelTokenizer, BertWordPieceTokenizer, GPT2BPETokenizer, make_tokenizer
from . import corpora
TRAIN_DATA = 0
VAL_DATA = 1
TEST_DATA = 2
def should_split(split):
"""
given split proportions checks if should split
Examples:
>>> should_split([10,0,0])
False
>>> should_split([1,.1,.2])
True
"""
return max(split) / sum(split) != 1.
def get_ext(path):
"""gets path extension"""
return os.path.splitext(path)[1]
def get_dataset(path, **kwargs):
"""gets dataset object based on keyword args and file at `path`"""
if supported_corpus(path):
return corpora.NAMED_CORPORA[path](**kwargs)
ext = get_ext(path)
if '.json' in ext:
text = json_dataset(path, **kwargs)
elif ext in ['.csv', '.tsv']:
text = csv_dataset(path, **kwargs)
else:
raise NotImplementedError('data file type %s is not supported' % (ext))
return text
def supported_corpus(corpus_name):
"""checks if corpus name is defined in `corpora.py`"""
return corpus_name in corpora.NAMED_CORPORA
def make_dataset(path, seq_length, text_key, label_key, lazy=False, process_fn=None, split=[1.],
delim=',', loose=False, binarize_sent=False, drop_unlabeled=False, tokenizer=None,
tokenizer_type='CharacterLevelTokenizer', tokenizer_model_path=None, vocab_size=None,
model_type='bpe', pad_token=0, character_converage=1.0, non_binary_cols=None,
parallel_group=None, **kwargs):
"""function to create datasets+tokenizers for common options"""
if isinstance(process_fn, str):
process_fn = eval(process_fn)
if non_binary_cols is not None:
# multilabel dataset support (only for csvs)
label_key = non_binary_cols
def get_dataset_from_path(path_):
if lazy:
# get lazily loaded dataset
named_corpora = False
if supported_corpus(path_):
named_corpora = True
name = path_
path_ = corpora.NAMED_CORPORA[path_].PATH
if torch.distributed.get_rank() == 0 and not exists_lazy(path_, data_type='data'):
# create cached version of dataset for lazy loading if it doesn't exist
text = get_dataset(name if named_corpora else path_, text_key=text_key, label_key=label_key, binarize_sent=binarize_sent,
delim=delim, drop_unlabeled=drop_unlabeled, loose_json=loose)
make_lazy(path_, text.X, data_type='data')
# This should be a barrier but nccl barrier assumes
# device_index=rank which is not the case for model
# parallel case
counts = torch.cuda.LongTensor([1])
torch.distributed.all_reduce(counts, group=parallel_group)
assert counts[0].item() == torch.distributed.get_world_size(
group=parallel_group)
text = lazy_array_loader(path_, data_type='data', map_fn=process_fn)
else:
# get dataset
text = get_dataset(path_, text_key=text_key, label_key=label_key, binarize_sent=binarize_sent,
delim=delim, drop_unlabeled=drop_unlabeled, loose_json=loose, preprocess_fn=process_fn)
return text
# get one or multiple datasets and concatenate
if isinstance(path, str):
path = [path]
datasets = [get_dataset_from_path(p) for p in path]
if len(datasets) == 1:
ds = datasets[0]
else:
ds = ConcatDataset(datasets)
# make tokenizer for dataset
if tokenizer is None:
tokenizer = make_tokenizer(tokenizer_type, ds, tokenizer_model_path, vocab_size, model_type,
pad_token, character_converage, **kwargs)
ds_type = ''
if 'ds_type' in kwargs:
ds_type = kwargs['ds_type']
ds.SetTokenizer(tokenizer)
# Split dataset into train/val/test (and wrap bert dataset)
if should_split(split):
ds = split_ds(ds, split)
if 'bert' in ds_type.lower():
presplit_sentences = kwargs['presplit_sentences'] if 'presplit_sentences' in kwargs else False
dstype = bert_sentencepair_dataset
ds = [dstype(d, max_seq_len=seq_length, presplit_sentences=presplit_sentences)
if d is not None else None for d in ds]
elif ds_type.lower() == 'gpt2':
ds = [GPT2Dataset(d, max_seq_len=seq_length) if d is not None else None for d in ds]
else:
if 'bert' in ds_type.lower():
presplit_sentences = kwargs['presplit_sentences'] if 'presplit_sentences' in kwargs else False
dstype = bert_sentencepair_dataset
ds = dstype(ds, max_seq_len=seq_length, presplit_sentences=presplit_sentences)
elif ds_type.lower() == 'gpt2':
ds = GPT2Dataset(ds, max_seq_len=seq_length)
return ds, tokenizer
megatron/deprecated_data_utils/configure_data.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""parses arguments and preps data loader"""
import copy
import torch
from megatron import data_utils
from megatron import mpu
class DataConfig:
def __init__(self, defaults={}):
super(DataConfig, self).__init__()
self.defaults = defaults
def apply(self, args):
if torch.distributed.get_rank() == 0:
print('configuring data')
self.apply_defaults(args)
return make_loaders(args)
def set_defaults(self, **kwargs):
for k, v in kwargs.items():
self.defaults[k] = v
def apply_defaults(self, args):
for k, v in self.defaults.items():
k = k.replace('-', '_')
if not hasattr(args, k):
setattr(args, k, v)
def make_data_loader(dataset, batch_size, args):
shuffle = args.shuffle
if shuffle:
sampler = data_utils.samplers.RandomSampler(
dataset, replacement=True, num_samples=batch_size * args.train_iters)
else:
sampler = torch.utils.data.SequentialSampler(dataset)
world_size = torch.distributed.get_world_size(
group=mpu.get_data_parallel_group())
rank = torch.distributed.get_rank(group=mpu.get_data_parallel_group())
distributed = world_size > 1
drop_last = distributed
if distributed:
batch_sampler = data_utils.samplers.DistributedBatchSampler(sampler,
batch_size,
drop_last,
rank,
world_size)
else:
batch_sampler = torch.utils.data.BatchSampler(sampler,
batch_size,
drop_last)
data_loader = torch.utils.data.DataLoader(dataset,
batch_sampler=batch_sampler,
num_workers=args.num_workers,
pin_memory=True)
return data_loader
def make_tfrecord_loaders(args):
"""Load train/val/test dataset from shuffled TFRecords"""
import data_utils.tf_dl
data_set_args = {'batch_size': args.batch_size,
'max_seq_len': args.seq_length,
'max_preds_per_seq': args.max_preds_per_seq,
'train': True,
'num_workers': max(args.num_workers, 1),
'seed': args.seed + args.rank + 1,
'threaded_dl': args.num_workers > 0
}
train = data_utils.tf_dl.TFRecordDataLoader(args.train_data,
**data_set_args)
data_set_args['train'] = False
if args.eval_seq_length is not None:
data_set_args['max_seq_len'] = args.eval_seq_length
if args.eval_max_preds_per_seq is not None:
data_set_args['max_preds_per_seq'] = args.eval_max_preds_per_seq
valid = None
if args.valid_data is not None:
valid = data_utils.tf_dl.TFRecordDataLoader(args.valid_data,
**data_set_args)
test = None
if args.test_data is not None:
test = data_utils.tf_dl.TFRecordDataLoader(args.test_data,
**data_set_args)
tokenizer = data_utils.make_tokenizer(args.tokenizer_type,
train,
args.tokenizer_path,
args.vocab_size,
args.tokenizer_model_type,
cache_dir=args.cache_dir)
return (train, valid, test), tokenizer
def make_loaders(args):
"""makes training/val/test"""
if args.data_loader == 'tfrecords':
return make_tfrecord_loaders(args)
world_size = torch.distributed.get_world_size(
group=mpu.get_data_parallel_group())
batch_size = args.batch_size * world_size
eval_batch_size = batch_size
if args.eval_batch_size is not None:
eval_batch_size = args.eval_batch_size * world_size
seq_length = args.seq_length
if seq_length < 0:
seq_length = seq_length * world_size
eval_seq_length = args.eval_seq_length
if eval_seq_length is not None and eval_seq_length < 0:
eval_seq_length = eval_seq_length * world_size
split = get_split(args)
if args.data_path is not None:
args.train_data = args.data_path
data_set_args = {
'path': args.train_data,
'seq_length': seq_length,
'lazy': args.data_loader == 'lazy',
'delim': args.delim,
'text_key': args.text_key,
'label_key': 'label',
'non_binary_cols': None,
'ds_type': args.data_set_type,
'split': split,
'loose': args.loose_json,
'tokenizer_type': args.tokenizer_type,
'tokenizer_model_path': args.tokenizer_path,
'vocab_size': args.vocab_size,
'model_type': args.tokenizer_model_type,
'cache_dir': args.cache_dir,
'max_preds_per_seq': args.max_preds_per_seq,
'presplit_sentences': args.presplit_sentences,
'parallel_group': mpu.get_data_parallel_group()}
eval_set_args = copy.copy(data_set_args)
eval_set_args['split'] = [1.]
# if optional eval args were set then replace their
# equivalent values in the arg dict
if eval_seq_length:
eval_set_args['seq_length'] = eval_seq_length
if args.eval_max_preds_per_seq:
eval_set_args['max_preds_per_seq'] = args.eval_max_preds_per_seq
if args.eval_text_key is not None:
eval_set_args['text_key'] = args.eval_text_key
# make datasets splits and tokenizer
train = None
valid = None
test = None
if args.train_data is not None:
train, tokenizer = data_utils.make_dataset(**data_set_args)
if data_utils.should_split(split):
train, valid, test = train
eval_set_args['tokenizer'] = tokenizer
# make training and val dataset if necessary
if valid is None and args.valid_data is not None:
eval_set_args['path'] = args.valid_data
valid, tokenizer = data_utils.make_dataset(**eval_set_args)
eval_set_args['tokenizer'] = tokenizer
if test is None and args.test_data is not None:
eval_set_args['path'] = args.test_data
test, tokenizer = data_utils.make_dataset(**eval_set_args)
# wrap datasets with data loader
if train is not None and args.batch_size > 0:
train = make_data_loader(train, batch_size, args)
args.do_train = True
else:
args.do_train = False
eval_batch_size = eval_batch_size if eval_batch_size != 0 else batch_size
if valid is not None:
valid = make_data_loader(valid, eval_batch_size, args)
args.do_valid = True
else:
args.do_valid = False
if test is not None:
test = make_data_loader(test, eval_batch_size, args)
args.do_test = True
else:
args.do_test = False
return (train, valid, test), tokenizer
def get_split(args):
"""
Get dataset splits from comma separated string list
"""
splits = []
if args.split.find(',') != -1:
splits = [float(s) for s in args.split.split(',')]
elif args.split.find('/') != -1:
splits = [float(s) for s in args.split.split('/')]
else:
splits = [float(args.split)]
split_total = sum(splits)
if split_total < 1.:
splits.append(1 - split_total)
while len(splits) < 3:
splits.append(0.)
splits = splits[:3]
if args.valid_data is not None:
splits[1] = 0.
if args.test_data is not None:
splits[2] = 0.
final_sum = sum(splits)
return [s / final_sum for s in splits]
def configure_data():
"""add cmdline flags for configuring datasets"""
# These are options that are used by data_utils, but are either
# deprecated or not meant to be exposed to the command line user.
# These options are intneded to be set in code by specific scripts.
defaults = {
'world_size': 1,
'rank': -1,
'persist_state': 0,
'lazy': False,
'transpose': False,
'data_set_type': 'supervised',
'seq_length': 256,
'eval_seq_length': 256,
'samples_per_shard': 100
}
return DataConfig(defaults=defaults)
megatron/deprecated_data_utils/corpora.py deleted 100755 → 0
View file @ ea81d62f
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""several datasets with preset arguments"""
from .datasets import json_dataset, csv_dataset
import os
class wikipedia(json_dataset):
"""
dataset for wikipedia with arguments configured for convenience
command line usage: `--train-data wikipedia`
"""
PATH = 'data/wikipedia/wikidump_lines.json'
assert_str = "make sure to set PATH for wikipedia data_utils/corpora.py"
def __init__(self, **kwargs):
assert os.path.exists(wikipedia.PATH), \
wikipedia.assert_str
if not kwargs:
kwargs = {}
kwargs['text_key'] = 'text'
kwargs['loose_json'] = True
super(wikipedia, self).__init__(wikipedia.PATH, **kwargs)
class webtext(json_dataset):
"""
dataset for webtext with arguments configured for convenience
command line usage: `--train-data webtext`
"""
PATH = 'data/webtext/data.json'
assert_str = "make sure to set PATH for webtext data_utils/corpora.py"
def __init__(self, **kwargs):
assert os.path.exists(webtext.PATH), \
webtext.assert_str
if not kwargs:
kwargs = {}
kwargs['text_key'] = 'text'
kwargs['loose_json'] = True
super(webtext, self).__init__(webtext.PATH, **kwargs)
NAMED_CORPORA = {
'wikipedia': wikipedia,
'webtext': webtext,
}
megatron/deprecated_data_utils/datasets.py deleted 100755 → 0
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megatron/deprecated_data_utils/file_utils.py deleted 100755 → 0
View file @ ea81d62f
# This file is provided as is from:
# https://github.com/huggingface/pytorch-pretrained-BERT
# Please refer to their repository for copyright.
"""
Utilities for working with the local dataset cache.
This file is adapted from the AllenNLP library at https://github.com/allenai/allennlp
Copyright by the AllenNLP authors.
"""
from __future__ import (absolute_import, division, print_function, unicode_literals)
import json
import logging
import os
import shutil
import tempfile
from functools import wraps
from hashlib import sha256
import sys
from io import open
import boto3
import requests
from botocore.exceptions import ClientError
from tqdm import tqdm
try:
from urllib.parse import urlparse
except ImportError:
from urlparse import urlparse
try:
from pathlib import Path
PYTORCH_PRETRAINED_BERT_CACHE = Path(os.getenv('PYTORCH_PRETRAINED_BERT_CACHE',
Path.home() / '.pytorch_pretrained_bert'))
except (AttributeError, ImportError):
PYTORCH_PRETRAINED_BERT_CACHE = os.getenv('PYTORCH_PRETRAINED_BERT_CACHE',
os.path.join(os.path.expanduser("~"), '.pytorch_pretrained_bert'))
logger = logging.getLogger(__name__) # pylint: disable=invalid-name
def url_to_filename(url, etag=None):
"""
Convert `url` into a hashed filename in a repeatable way.
If `etag` is specified, append its hash to the url's, delimited
by a period.
"""
url_bytes = url.encode('utf-8')
url_hash = sha256(url_bytes)
filename = url_hash.hexdigest()
if etag:
etag_bytes = etag.encode('utf-8')
etag_hash = sha256(etag_bytes)
filename += '.' + etag_hash.hexdigest()
return filename
def filename_to_url(filename, cache_dir=None):
"""
Return the url and etag (which may be ``None``) stored for `filename`.
Raise ``EnvironmentError`` if `filename` or its stored metadata do not exist.
"""
if cache_dir is None:
cache_dir = PYTORCH_PRETRAINED_BERT_CACHE
if sys.version_info[0] == 3 and isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
cache_path = os.path.join(cache_dir, filename)
if not os.path.exists(cache_path):
raise EnvironmentError("file {} not found".format(cache_path))
meta_path = cache_path + '.json'
if not os.path.exists(meta_path):
raise EnvironmentError("file {} not found".format(meta_path))
with open(meta_path, encoding="utf-8") as meta_file:
metadata = json.load(meta_file)
url = metadata['url']
etag = metadata['etag']
return url, etag
def cached_path(url_or_filename, cache_dir=None):
"""
Given something that might be a URL (or might be a local path),
determine which. If it's a URL, download the file and cache it, and
return the path to the cached file. If it's already a local path,
make sure the file exists and then return the path.
"""
if cache_dir is None:
cache_dir = PYTORCH_PRETRAINED_BERT_CACHE
if sys.version_info[0] == 3 and isinstance(url_or_filename, Path):
url_or_filename = str(url_or_filename)
if sys.version_info[0] == 3 and isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
parsed = urlparse(url_or_filename)
if parsed.scheme in ('http', 'https', 's3'):
# URL, so get it from the cache (downloading if necessary)
return get_from_cache(url_or_filename, cache_dir)
elif os.path.exists(url_or_filename):
# File, and it exists.
return url_or_filename
elif parsed.scheme == '':
# File, but it doesn't exist.
raise EnvironmentError("file {} not found".format(url_or_filename))
else:
# Something unknown
raise ValueError("unable to parse {} as a URL or as a local path".format(url_or_filename))
def split_s3_path(url):
"""Split a full s3 path into the bucket name and path."""
parsed = urlparse(url)
if not parsed.netloc or not parsed.path:
raise ValueError("bad s3 path {}".format(url))
bucket_name = parsed.netloc
s3_path = parsed.path
# Remove '/' at beginning of path.
if s3_path.startswith("/"):
s3_path = s3_path[1:]
return bucket_name, s3_path
def s3_request(func):
"""
Wrapper function for s3 requests in order to create more helpful error
messages.
"""
@wraps(func)
def wrapper(url, *args, **kwargs):
try:
return func(url, *args, **kwargs)
except ClientError as exc:
if int(exc.response["Error"]["Code"]) == 404:
raise EnvironmentError("file {} not found".format(url))
else:
raise
return wrapper
@s3_request
def s3_etag(url):
"""Check ETag on S3 object."""
s3_resource = boto3.resource("s3")
bucket_name, s3_path = split_s3_path(url)
s3_object = s3_resource.Object(bucket_name, s3_path)
return s3_object.e_tag
@s3_request
def s3_get(url, temp_file):
"""Pull a file directly from S3."""
s3_resource = boto3.resource("s3")
bucket_name, s3_path = split_s3_path(url)
s3_resource.Bucket(bucket_name).download_fileobj(s3_path, temp_file)
def http_get(url, temp_file):
req = requests.get(url, stream=True)
content_length = req.headers.get('Content-Length')
total = int(content_length) if content_length is not None else None
progress = tqdm(unit="B", total=total)
for chunk in req.iter_content(chunk_size=1024):
if chunk: # filter out keep-alive new chunks
progress.update(len(chunk))
temp_file.write(chunk)
progress.close()
def get_from_cache(url, cache_dir=None):
"""
Given a URL, look for the corresponding dataset in the local cache.
If it's not there, download it. Then return the path to the cached file.
"""
if cache_dir is None:
cache_dir = PYTORCH_PRETRAINED_BERT_CACHE
if sys.version_info[0] == 3 and isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
if not os.path.exists(cache_dir):
os.makedirs(cache_dir)
# Get eTag to add to filename, if it exists.
if url.startswith("s3://"):
etag = s3_etag(url)
else:
response = requests.head(url, allow_redirects=True)
if response.status_code != 200:
raise IOError("HEAD request failed for url {} with status code {}"
.format(url, response.status_code))
etag = response.headers.get("ETag")
filename = url_to_filename(url, etag)
# get cache path to put the file
cache_path = os.path.join(cache_dir, filename)
if not os.path.exists(cache_path):
# Download to temporary file, then copy to cache dir once finished.
# Otherwise you get corrupt cache entries if the download gets interrupted.
with tempfile.NamedTemporaryFile() as temp_file:
logger.info("%s not found in cache, downloading to %s", url, temp_file.name)
# GET file object
if url.startswith("s3://"):
s3_get(url, temp_file)
else:
http_get(url, temp_file)
# we are copying the file before closing it, so flush to avoid truncation
temp_file.flush()
# shutil.copyfileobj() starts at the current position, so go to the start
temp_file.seek(0)
logger.info("copying %s to cache at %s", temp_file.name, cache_path)
with open(cache_path, 'wb') as cache_file:
shutil.copyfileobj(temp_file, cache_file)
logger.info("creating metadata file for %s", cache_path)
meta = {'url': url, 'etag': etag}
meta_path = cache_path + '.json'
with open(meta_path, 'w', encoding="utf-8") as meta_file:
json.dump(meta, meta_file)
logger.info("removing temp file %s", temp_file.name)
return cache_path
def read_set_from_file(filename):
'''
Extract a de-duped collection (set) of text from a file.
Expected file format is one item per line.
'''
collection = set()
with open(filename, 'r', encoding='utf-8') as file_:
for line in file_:
collection.add(line.rstrip())
return collection
def get_file_extension(path, dot=True, lower=True):
ext = os.path.splitext(path)[1]
ext = ext if dot else ext[1:]
return ext.lower() if lower else ext
megatron/deprecated_data_utils/lazy_loader.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""utils for loading text from disk"""
import os
import mmap
import pickle as pkl
import time
from itertools import accumulate
import torch
from torch.multiprocessing import Lock
def get_lazy_path(path):
"""
Gets directory path where lazy files are stored.
"""
return os.path.splitext(path)[0] + '.lazy'
def exists_lazy(path, data_type='data'):
"""
Check if we've already made a lazy version of this file for the `data_type` field.
"""
if not os.path.exists(get_lazy_path(path)):
return False
contents = os.listdir(get_lazy_path(path))
if data_type not in contents:
return False
if data_type + '.len.pkl' not in contents:
return False
return True
def make_lazy(path, strs, data_type='data'):
"""
Make lazy version of `data_type` field of the file. Byte offsets
corresponding to data indices are stored in a `.len.pkl` data file.
"""
lazypath = get_lazy_path(path)
if not os.path.exists(lazypath):
os.makedirs(lazypath)
datapath = os.path.join(lazypath, data_type)
lenpath = os.path.join(lazypath, data_type + '.len.pkl')
if not torch.distributed.is_initialized() or torch.distributed.get_rank() == 0:
with open(datapath, 'wb') as f:
str_lens = []
str_cnt = 0
for s in strs:
if isinstance(s, dict):
s = s['text']
encoded = s.encode('utf-8')
f.write(encoded)
str_cnt = len(encoded)
str_lens.append(str_cnt)
pkl.dump(str_lens, open(lenpath, 'wb'))
else:
while not os.path.exists(lenpath):
time.sleep(1)
def split_strings(strings, start, chr_lens):
"""
Split strings based on string lengths and given start.
"""
return [strings[i - start:j - start] for i, j in zip([start] + chr_lens[:-1], chr_lens)]
class ProcessorTokenizer:
"""
callable class that runs a preprocessing, as well as tokenization step,
on input text.
"""
def __init__(self, tokenizer, process_fn=None):
self.tokenizer = tokenizer
self.process_fn = process_fn
def __call__(self, string):
if self.tokenizer is not None:
string = self.tokenizer(string, process_fn=self.process_fn)
elif self.process_fn is not None:
string = self.process_fn(string)
return string
class lazy_array_loader(object):
"""
Arguments:
path: path to directory where array entries are concatenated into one big string file
and the .len file are located
data_type (str): Some datsets have multiple fields that are stored in different paths.
`data_type` specifies which of these fields to load in this class
mem_map (boolean): Specifies whether to memory map file `path`
map_fn (callable): Fetched strings are passed through map_fn before being returned.
Example of lazy loader directory structure:
file.json
file.lazy/
data_type1
data_type1.len.pkl
data_type2
data_type2.len.pkl
"""
def __init__(self, path, data_type='data', mem_map=False, map_fn=None):
lazypath = get_lazy_path(path)
datapath = os.path.join(lazypath, data_type)
# get file where array entries are concatenated into one big string
self._file = open(datapath, 'rb', buffering=0)
self.file = self._file
# memory map file if necessary
self.mem_map = mem_map
if self.mem_map:
self.file = mmap.mmap(self.file.fileno(), 0, prot=mmap.PROT_READ)
lenpath = os.path.join(lazypath, data_type + '.len.pkl')
self.lens = pkl.load(open(lenpath, 'rb'))
self.ends = list(accumulate(self.lens))
self.dumb_ends = list(self.ends)
self.read_lock = Lock()
self.process_fn = map_fn
self.map_fn = map_fn
self._tokenizer = None
def SetTokenizer(self, tokenizer):
"""
logic to set and remove (set to None) tokenizer.
combines preprocessing/tokenization into one callable.
"""
if tokenizer is None:
if not hasattr(self, '_tokenizer'):
self._tokenizer = tokenizer
else:
self._tokenizer = tokenizer
self.map_fn = ProcessorTokenizer(tokenizer, self.process_fn)
def GetTokenizer(self):
return self._tokenizer
def __getitem__(self, index):
"""
read file and splice strings based on string ending array `self.ends`
"""
if not isinstance(index, slice):
if index == 0:
start = 0
else:
start = self.ends[index - 1]
end = self.ends[index]
rtn = self.file_read(start, end)
if self.map_fn is not None:
return self.map_fn(rtn)
else:
# if slice, fetch strings with 1 diskread and then splice in memory
chr_lens = self.ends[index]
if index.start == 0 or index.start is None:
start = 0
else:
start = self.ends[index.start - 1]
stop = chr_lens[-1]
strings = self.file_read(start, stop)
rtn = split_strings(strings, start, chr_lens)
if self.map_fn is not None:
return self.map_fn([s for s in rtn])
return rtn
def __len__(self):
return len(self.ends)
def file_read(self, start=0, end=None):
"""read specified portion of file"""
# atomic reads to avoid race conditions with multiprocess dataloader
self.read_lock.acquire()
# seek to start of file read
self.file.seek(start)
# read to end of file if no end point provided
if end is None:
rtn = self.file.read()
# else read amount needed to reach end point
else:
rtn = self.file.read(end - start)
self.read_lock.release()
# TODO: @raulp figure out mem map byte string bug
# if mem map'd need to decode byte string to string
rtn = rtn.decode('utf-8', 'ignore')
# rtn = str(rtn)
if self.mem_map:
rtn = rtn.decode('unicode_escape')
return rtn
megatron/deprecated_data_utils/samplers.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""batch samplers that work with either random or sequential data samplers"""
import math
import os
import sys
import torch
from torch.utils import data
import numpy as np
class RandomSampler(data.sampler.Sampler):
r"""
Based off of pytorch RandomSampler and DistributedSampler. Essentially a RandomSampler,
but this class lets the user set an epoch like DistributedSampler
Samples elements randomly. If without replacement, then sample from a shuffled dataset.
If with replacement, then user can specify ``num_samples`` to draw.
Arguments:
data_source (Dataset): dataset to sample from
num_samples (int): number of samples to draw, default=len(dataset)
replacement (bool): samples are drawn with replacement if ``True``, default=False
"""
def __init__(self, data_source, replacement=False, num_samples=None):
self.data_source = data_source
self.replacement = replacement
self._num_samples = num_samples
self.epoch = -1
if self._num_samples is not None and replacement is False:
raise ValueError("With replacement=False, num_samples should not be specified, "
"since a random permute will be performed.")
if not isinstance(self.num_samples, int) or self.num_samples <= 0:
raise ValueError("num_samples should be a positive integer "
"value, but got num_samples={}".format(self.num_samples))
if not isinstance(self.replacement, bool):
raise ValueError("replacement should be a boolean value, but got "
"replacement={}".format(self.replacement))
@property
def num_samples(self):
# dataset size might change at runtime
if self._num_samples is None:
return len(self.data_source)
return self._num_samples
def __iter__(self):
n = len(self.data_source)
g = torch.Generator()
if self.epoch >= 0:
g.manual_seed(self.epoch)
if self.replacement:
return iter(torch.randint(high=n, size=(self.num_samples,),
dtype=torch.int64, generator=g).tolist())
return iter(torch.randperm(n, generator=g).tolist())
def __len__(self):
return self.num_samples
def set_epoch(self, epoch):
self.epoch = epoch
class DistributedBatchSampler(data.sampler.BatchSampler):
"""
similar to normal implementation of distributed sampler, except implementation is at the
batch sampler level, instead of just the sampler level. This allows wrapping of arbitrary
data samplers (sequential, random, WeightedRandomSampler, etc.) with this batch sampler.
"""
def __init__(self, sampler, batch_size, drop_last, rank=-1, world_size=2, wrap_last=False):
super(DistributedBatchSampler, self).__init__(sampler, batch_size, drop_last)
if rank == -1:
assert False, 'should not be here'
rank = torch.distributed.get_rank()
self.rank = rank
self.world_size = world_size
self.sampler.wrap_around = 0
self.wrap_around = 0
self.wrap_last = wrap_last
self.start_iter = 0
def __iter__(self):
batch = []
last_batch = None
i = 0
for idx in self.data_iterator(self.sampler, wrap_around=False):
batch.append(idx)
if len(batch) == self.batch_size:
tbatch = self._batch(batch)
if i >= self.start_iter:
yield tbatch
self.start_iter = 0
i += 1
last_batch = np.array(list(tbatch))
batch = []
batch_len = len(batch)
if batch_len > 0 and not self.drop_last:
if self.wrap_last:
self.sampler.wrap_around -= (self.batch_size)
self.wrap_around += (len(batch))
self.wrap_around %= self.batch_size
if isinstance(self.sampler, TransposedSampler):
for i, idx in enumerate(self.data_iterator(self.sampler, wrap_around=True)):
if i == 0:
continue
batch.append(idx)
new_batch_len = len(batch)
if len(batch) == self.batch_size:
break
yield self._batch(batch)
if self.wrap_last:
self.sampler.wrap_around += self.batch_size
def data_iterator(self, _iter, wrap_around=False):
"""iterates through data and handles wrap around"""
for i, idx in enumerate(_iter):
if i < self.wrap_around % self.batch_size:
continue
if wrap_around:
self.wrap_around += 1
self.wrap_around %= self.batch_size
yield idx
def _batch(self, batch):
"""extracts samples only pertaining to this worker's batch"""
start = self.rank * self.batch_size // self.world_size
end = (self.rank + 1) * self.batch_size // self.world_size
return batch[start:end]
megatron/deprecated_data_utils/scripts/presplit_sentences_json.py deleted 100644 → 0
View file @ ea81d62f
"""
Usage:
python scripts/presplit_sentences_json.py <original loose json file> <output loose json file>
"""
import sys
import json
import nltk
nltk.download('punkt')
input_file = sys.argv[1]
output_file = sys.argv[2]
line_seperator = "\n"
with open(input_file, 'r') as ifile:
with open(output_file, "w") as ofile:
for doc in ifile.readlines():
parsed = json.loads(doc)
sent_list = []
for line in parsed['text'].split('\n'):
if line != '\n':
sent_list.extend(nltk.tokenize.sent_tokenize(line))
parsed['text'] = line_seperator.join(sent_list)
ofile.write(json.dumps(parsed) + '\n')
megatron/deprecated_data_utils/scripts/split_gpt2_json.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Takes a corpora of files (specified by `--input_files`) with json data separated
by newlines (loose json). Splits data into train.json, val.json, test.json files
under `output_dir`.
Note: This code has the potential to override files with the names
train.json, val.json, test.json in `--output_dir`.
"""
import os
import argparse
import math
import random
parser = argparse.ArgumentParser('resplit loose json data into train/val/test')
parser.add_argument('--input_files', nargs='+', required=True,
help='whitespace separated list of input data files')
parser.add_argument('--output_dir', required=True,
help='output directory where to put files')
parser.add_argument('--test_percent', type=float, nargs='+', default=[0.05, 0],
help='percentage of available data to use for val/test dataset')
args = parser.parse_args()
def get_lines(filepath):
lines = []
with open(filepath, 'r') as f:
for i, l in enumerate(f.readlines()):
l = l.strip()
lines.append(l)
return lines
def get_splits(lines, line_counts):
all_lines = []
line_idx = []
file_mappings = []
for i, l in enumerate(lines):
all_lines.extend(l)
line_idx.extend(list(range(len(l))))
file_mappings.extend([i] * len(l))
indices = list(range(len(all_lines)))
random.shuffle(indices)
all_lines = [all_lines[idx] for idx in indices]
line_idx = [line_idx[idx] for idx in indices]
file_mappings = [file_mappings[idx] for idx in indices]
splits = []
mappings = []
start = 0
for end in line_counts:
end += start
splits.append(all_lines[start:end])
mappings.append(format_mappings(line_idx[start:end], file_mappings[start:end]))
start = end
return splits, mappings
def format_mappings(line_idx, file_mappings):
lines = []
for m, l in zip(file_mappings, line_idx):
lines.append(str(m).strip() + '\t' + str(l).strip())
return lines
def get_filepaths(filepaths, output_dir):
paths = []
train_path = 'train.json'
dev_path = 'dev.json'
test_path = 'test.json'
paths.append(os.path.join(output_dir, train_path))
paths.append(os.path.join(output_dir, dev_path))
paths.append(os.path.join(output_dir, test_path))
return paths
def write_files(lines, mappings, filepaths):
for l, m, path in zip(lines, mappings, filepaths):
write_file(l, path)
write_mapping_file(m, path)
def write_file(lines, path):
print('Writing:', path)
with open(path, 'w') as f:
for l in lines:
f.write(l + '\n')
def write_mapping_file(m, path):
path = path + '.map'
m = [get_mapping_header()] + m
write_file(m, path)
def get_mapping_header():
return 'file\tline #'
if not os.path.exists(args.output_dir):
os.makedirs(args.output_dir)
lines = []
for filepath in args.input_files:
_lines = get_lines(filepath)
lines.append(_lines)
# calculate number of lines to use for each
line_counts = [len(l) for l in lines]
total_lines = sum(line_counts)
dev_percent = args.test_percent[0]
dev_lines = math.ceil(dev_percent * total_lines)
test_percent = 0
if len(args.test_percent) == 2:
test_percent = args.test_percent[1]
test_lines = math.ceil(test_percent * total_lines)
train_lines = total_lines - (test_lines + dev_lines)
normed_lines = [train_lines, dev_lines, test_lines]
normed_lines = [int(l) for l in normed_lines]
splits, mappings = get_splits(lines, normed_lines)
filepaths = get_filepaths(args.input_files, args.output_dir)
print('Writing output to:', filepaths)
write_files(splits, mappings, filepaths)
megatron/deprecated_data_utils/scripts/split_json.py deleted 100644 → 0
View file @ ea81d62f
"""
Takes a corpora of files (specified by `--input_files`) with json data separated
by newlines (loose json). Splits data into train.json, val.json, test.json files
under `output_dir`.
Note: This code has the potential to override files with the names
train.json, val.json, test.json in `--output_dir`.
"""
import os
import argparse
import math
import random
parser = argparse.ArgumentParser('resplit loose json data into train/val/test')
parser.add_argument('--input_files', nargs='+', required=True,
help='whitespace separated list of input data files')
parser.add_argument('--output_dir', required=True,
help='output directory where to put files')
parser.add_argument('--test_percent', type=float, nargs='+', default=[0.05, 0],
help='percentage of available data to use for val/test dataset')
args = parser.parse_args()
def get_lines(filepath):
lines = []
with open(filepath, 'r') as f:
for i, l in enumerate(f.readlines()):
l = l.strip()
lines.append(l)
return lines
def get_splits(lines, line_counts):
all_lines = []
line_idx = []
file_mappings = []
for i, l in enumerate(lines):
all_lines.extend(l)
line_idx.extend(list(range(len(l))))
file_mappings.extend([i] * len(l))
indices = list(range(len(all_lines)))
random.shuffle(indices)
all_lines = [all_lines[idx] for idx in indices]
line_idx = [line_idx[idx] for idx in indices]
file_mappings = [file_mappings[idx] for idx in indices]
splits = []
mappings = []
start = 0
for end in line_counts:
end += start
splits.append(all_lines[start:end])
mappings.append(format_mappings(line_idx[start:end], file_mappings[start:end]))
start = end
return splits, mappings
def format_mappings(line_idx, file_mappings):
lines = []
for m, l in zip(file_mappings, line_idx):
lines.append(str(m).strip() + '\t' + str(l).strip())
return lines
def get_filepaths(filepaths, output_dir):
paths = []
train_path = 'train.json'
dev_path = 'dev.json'
test_path = 'test.json'
paths.append(os.path.join(output_dir, train_path))
paths.append(os.path.join(output_dir, dev_path))
paths.append(os.path.join(output_dir, test_path))
return paths
def write_files(lines, mappings, filepaths):
for l, m, path in zip(lines, mappings, filepaths):
write_file(l, path)
write_mapping_file(m, path)
def write_file(lines, path):
print('Writing:', path)
with open(path, 'w') as f:
for l in lines:
f.write(l + '\n')
def write_mapping_file(m, path):
path = path + '.map'
m = [get_mapping_header()] + m
write_file(m, path)
def get_mapping_header():
return 'file\tline #'
if not os.path.exists(args.output_dir):
os.makedirs(args.output_dir)
lines = []
for filepath in args.input_files:
_lines = get_lines(filepath)
lines.append(_lines)
# calculate number of lines to use for each
line_counts = [len(l) for l in lines]
total_lines = sum(line_counts)
dev_percent = args.test_percent[0]
dev_lines = math.ceil(dev_percent * total_lines)
test_percent = 0
if len(args.test_percent) == 2:
test_percent = args.test_percent[1]
test_lines = math.ceil(test_percent * total_lines)
train_lines = total_lines - (test_lines + dev_lines)
normed_lines = [train_lines, dev_lines, test_lines]
normed_lines = [int(l) for l in normed_lines]
splits, mappings = get_splits(lines, normed_lines)
filepaths = get_filepaths(args.input_files, args.output_dir)
print('Writing output to:', filepaths)
write_files(splits, mappings, filepaths)
megatron/deprecated_data_utils/tf_dl.py deleted 100755 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""PyTorch DataLoader for TFRecords"""
import numpy as np
import torch
import queue
import threading
import tensorflow as tf
tf.enable_eager_execution()
class TFRecordDataLoader(object):
def __init__(self, records, batch_size, max_seq_len, max_preds_per_seq,
train, num_workers=2, seed=1, threaded_dl=False):
assert max_preds_per_seq is not None, "--max-preds-per-seq MUST BE SPECIFIED when using tfrecords"
tf.set_random_seed(seed)
if isinstance(records, str):
records = [records]
self.record_converter = Record2Example({"input_ids": tf.FixedLenFeature([max_seq_len], tf.int64),
"input_mask": tf.FixedLenFeature([max_seq_len], tf.int64),
"segment_ids": tf.FixedLenFeature([max_seq_len], tf.int64),
"masked_lm_positions": tf.FixedLenFeature([max_preds_per_seq], tf.int64),
"masked_lm_ids": tf.FixedLenFeature([max_preds_per_seq], tf.int64),
"masked_lm_weights": tf.FixedLenFeature([max_preds_per_seq], tf.float32),
"next_sentence_labels": tf.FixedLenFeature([1], tf.int64)})
# Instantiate dataset according to original BERT implementation
if train:
self.dataset = tf.data.Dataset.from_tensor_slices(tf.constant(records))
self.dataset = self.dataset.repeat()
self.dataset = self.dataset.shuffle(buffer_size=len(records))
# use sloppy tfrecord dataset
self.dataset = self.dataset.apply(
tf.contrib.data.parallel_interleave(
tf.data.TFRecordDataset,
sloppy=train,
cycle_length=min(num_workers, len(records))))
self.dataset = self.dataset.shuffle(buffer_size=100)
else:
self.dataset = tf.data.TFRecordDataset(records)
self.dataset = self.dataset.repeat()
# Instantiate dataloader (do not drop remainder for eval)
loader_args = {'batch_size': batch_size,
'num_parallel_batches': num_workers,
'drop_remainder': train}
self.dataloader = self.dataset.apply(
tf.contrib.data.map_and_batch(
self.record_converter, **loader_args))
self.threaded_dl = threaded_dl
self.num_workers = num_workers
def __iter__(self):
if self.threaded_dl:
data_iter = iter(MultiprocessLoader(self.dataloader, self.num_workers))
for item in data_iter:
yield item
else:
data_iter = iter(self.dataloader)
for item in data_iter:
yield convert_tf_example_to_torch_tensors(item)
class Record2Example(object):
def __init__(self, feature_map):
self.feature_map = feature_map
def __call__(self, record):
"""Decodes a BERT TF record to a TF example."""
example = tf.parse_single_example(record, self.feature_map)
for k, v in list(example.items()):
if v.dtype == tf.int64:
example[k] = tf.to_int32(v)
return example
def convert_tf_example_to_torch_tensors(example):
item = {k: (v.numpy()) for k, v in example.items()}
mask = np.zeros_like(item['input_ids'])
mask_labels = np.ones_like(item['input_ids']) * -1
for b, row in enumerate(item['masked_lm_positions'].astype(int)):
for i, idx in enumerate(row):
if item['masked_lm_weights'][b, i] != 0:
mask[b, idx] = 1
mask_labels[b, idx] = item['masked_lm_ids'][b, i]
output = {'text': item['input_ids'], 'types': item['segment_ids'], 'is_random': item['next_sentence_labels'],
'pad_mask': 1 - item['input_mask'], 'mask': mask, 'mask_labels': mask_labels}
return {k: torch.from_numpy(v) for k, v in output.items()}
class MultiprocessLoader(object):
def __init__(self, dataloader, num_workers=2):
self.dl = dataloader
self.queue_size = 2 * num_workers
def __iter__(self):
output_queue = queue.Queue(self.queue_size)
output_thread = threading.Thread(target=_multiproc_iter,
args=(self.dl, output_queue))
output_thread.daemon = True
output_thread.start()
while output_thread.is_alive():
yield output_queue.get(block=True)
else:
print(RuntimeError('TF record data loader thread exited unexpectedly'))
def _multiproc_iter(dl, output_queue):
data_iter = iter(dl)
for item in data_iter:
tensors = convert_tf_example_to_torch_tensors(item)
output_queue.put(tensors, block=True)
megatron/deprecated_data_utils/tokenization.py deleted 100755 → 0
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megatron/deprecated_data_utils/tokenization_gpt2.py deleted 100644 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright 2018 The Open AI Team Authors and The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tokenization classes for OpenAI GPT."""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import sys
import json
import logging
import os
import regex as re
from io import open
try:
from functools import lru_cache
except ImportError:
# Just a dummy decorator to get the checks to run on python2
# because honestly I don't want to support a byte-level unicode BPE
# tokenizer on python 2 right now.
def lru_cache():
return lambda func: func
from .file_utils import cached_path
logger = logging.getLogger(__name__)
PRETRAINED_VOCAB_ARCHIVE_MAP = {
'gpt2': "https://s3.amazonaws.com/models.huggingface.co/bert/gpt2-vocab.json",
}
PRETRAINED_MERGES_ARCHIVE_MAP = {
'gpt2': "https://s3.amazonaws.com/models.huggingface.co/bert/gpt2-merges.txt",
}
PRETRAINED_VOCAB_POSITIONAL_EMBEDDINGS_SIZE_MAP = {
'gpt2': 1024,
}
VOCAB_NAME = 'vocab.json'
MERGES_NAME = 'merges.txt'
SPECIAL_TOKENS_NAME = 'special_tokens.txt'
@lru_cache()
def bytes_to_unicode():
"""
Returns list of utf-8 byte and a corresponding list of unicode strings.
The reversible bpe codes work on unicode strings.
This means you need a large # of unicode characters in your vocab if you want to avoid UNKs.
When you're at something like a 10B token dataset you end up needing around 5K for decent coverage.
This is a signficant percentage of your normal, say, 32K bpe vocab.
To avoid that, we want lookup tables between utf-8 bytes and unicode strings.
And avoids mapping to whitespace/control characters the bpe code barfs on.
"""
_chr = unichr if sys.version_info[0] == 2 else chr
bs = list(range(ord("!"), ord("~") + 1)) + list(range(ord("¡"), ord("¬") + 1)) + \
list(range(ord("®"), ord("ÿ") + 1))
cs = bs[:]
n = 0
for b in range(2**8):
if b not in bs:
bs.append(b)
cs.append(2**8 + n)
n += 1
cs = [_chr(n) for n in cs]
return dict(zip(bs, cs))
def get_pairs(word):
"""Return set of symbol pairs in a word.
Word is represented as tuple of symbols (symbols being variable-length strings).
"""
pairs = set()
prev_char = word[0]
for char in word[1:]:
pairs.add((prev_char, char))
prev_char = char
return pairs
class GPT2Tokenizer(object):
"""
GPT-2 BPE tokenizer. Peculiarities:
- Byte-level BPE
"""
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path, cache_dir=None, *inputs, **kwargs):
"""
Instantiate a PreTrainedBertModel from a pre-trained model file.
Download and cache the pre-trained model file if needed.
"""
if pretrained_model_name_or_path in PRETRAINED_VOCAB_ARCHIVE_MAP:
vocab_file = PRETRAINED_VOCAB_ARCHIVE_MAP[pretrained_model_name_or_path]
merges_file = PRETRAINED_MERGES_ARCHIVE_MAP[pretrained_model_name_or_path]
special_tokens_file = None
else:
vocab_file = os.path.join(pretrained_model_name_or_path, VOCAB_NAME)
merges_file = os.path.join(pretrained_model_name_or_path, MERGES_NAME)
special_tokens_file = os.path.join(pretrained_model_name_or_path, SPECIAL_TOKENS_NAME)
if not os.path.exists(special_tokens_file):
special_tokens_file = None
else:
logger.info("loading special tokens file {}".format(special_tokens_file))
# redirect to the cache, if necessary
try:
resolved_vocab_file = cached_path(vocab_file, cache_dir=cache_dir)
resolved_merges_file = cached_path(merges_file, cache_dir=cache_dir)
except EnvironmentError:
logger.error(
"Model name '{}' was not found in model name list ({}). "
"We assumed '{}' was a path or url but couldn't find files {} and {} "
"at this path or url.".format(
pretrained_model_name_or_path,
', '.join(PRETRAINED_VOCAB_ARCHIVE_MAP.keys()),
pretrained_model_name_or_path,
vocab_file, merges_file))
return None
if resolved_vocab_file == vocab_file and resolved_merges_file == merges_file:
logger.info("loading vocabulary file {}".format(vocab_file))
logger.info("loading merges file {}".format(merges_file))
else:
logger.info("loading vocabulary file {} from cache at {}".format(
vocab_file, resolved_vocab_file))
logger.info("loading merges file {} from cache at {}".format(
merges_file, resolved_merges_file))
if pretrained_model_name_or_path in PRETRAINED_VOCAB_POSITIONAL_EMBEDDINGS_SIZE_MAP:
# if we're using a pretrained model, ensure the tokenizer wont index sequences longer
# than the number of positional embeddings
max_len = PRETRAINED_VOCAB_POSITIONAL_EMBEDDINGS_SIZE_MAP[pretrained_model_name_or_path]
kwargs['max_len'] = min(kwargs.get('max_len', int(1e12)), max_len)
# Instantiate tokenizer.
if special_tokens_file and 'special_tokens' not in kwargs:
special_tokens = open(special_tokens_file, encoding='utf-8').read().split('\n')[:-1]
else:
special_tokens = kwargs.pop('special_tokens', [])
tokenizer = cls(
resolved_vocab_file,
resolved_merges_file,
special_tokens=special_tokens,
*inputs,
**kwargs)
return tokenizer
def __init__(self, vocab_file, merges_file, errors='replace',
special_tokens=None, max_len=None):
self.max_len = max_len if max_len is not None else int(1e12)
self.encoder = json.load(open(vocab_file))
self.decoder = {v: k for k, v in self.encoder.items()}
self.errors = errors # how to handle errors in decoding
self.byte_encoder = bytes_to_unicode()
self.byte_decoder = {v: k for k, v in self.byte_encoder.items()}
bpe_data = open(merges_file, encoding='utf-8').read().split('\n')[1:-1]
bpe_merges = [tuple(merge.split()) for merge in bpe_data]
self.bpe_ranks = dict(zip(bpe_merges, range(len(bpe_merges))))
self.cache = {}
# Should haved added re.IGNORECASE so BPE merges can happen for
# capitalized versions of contractions
self.pat = re.compile(
r"""'s|'t|'re|'ve|'m|'ll|'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+""")
self.special_tokens = {}
self.special_tokens_decoder = {}
self.set_special_tokens(special_tokens)
def __len__(self):
return len(self.encoder) + len(self.special_tokens)
def set_special_tokens(self, special_tokens):
""" Add a list of additional tokens to the encoder.
The additional tokens are indexed starting from the last index of the
current vocabulary in the order of the `special_tokens` list.
"""
if not special_tokens:
self.special_tokens = {}
self.special_tokens_decoder = {}
return
self.special_tokens = dict((tok, len(self.encoder) + i)
for i, tok in enumerate(special_tokens))
self.special_tokens_decoder = {v: k for k, v in self.special_tokens.items()}
logger.info("Special tokens {}".format(self.special_tokens))
def bpe(self, token):
if token in self.cache:
return self.cache[token]
word = tuple(token)
pairs = get_pairs(word)
if not pairs:
return token
while True:
bigram = min(pairs, key=lambda pair: self.bpe_ranks.get(pair, float('inf')))
if bigram not in self.bpe_ranks:
break
first, second = bigram
new_word = []
i = 0
while i < len(word):
try:
j = word.index(first, i)
new_word.extend(word[i:j])
i = j
except BaseException:
new_word.extend(word[i:])
break
if word[i] == first and i < len(word) - 1 and word[i + 1] == second:
new_word.append(first + second)
i += 2
else:
new_word.append(word[i])
i += 1
new_word = tuple(new_word)
word = new_word
if len(word) == 1:
break
else:
pairs = get_pairs(word)
word = ' '.join(word)
self.cache[token] = word
return word
def tokenize(self, text):
""" Tokenize a string. """
bpe_tokens = []
for token in re.findall(self.pat, text):
if sys.version_info[0] == 2:
token = ''.join(self.byte_encoder[ord(b)] for b in token)
else:
token = ''.join(self.byte_encoder[b] for b in token.encode('utf-8'))
bpe_tokens.extend(bpe_token for bpe_token in self.bpe(token).split(' '))
return bpe_tokens
def convert_tokens_to_ids(self, tokens):
""" Converts a sequence of tokens into ids using the vocab. """
ids = []
if isinstance(tokens, str) or (sys.version_info[0] == 2 and isinstance(tokens, unicode)):
if tokens in self.special_tokens:
return self.special_tokens[tokens]
else:
return self.encoder.get(tokens, 0)
for token in tokens:
if token in self.special_tokens:
ids.append(self.special_tokens[token])
else:
ids.append(self.encoder.get(token, 0))
if len(ids) > self.max_len:
logger.warning(
"Token indices sequence length is longer than the specified maximum "
" sequence length for this OpenAI GPT model ({} > {}). Running this"
" sequence through the model will result in indexing errors".format(
len(ids), self.max_len)
)
return ids
def convert_ids_to_tokens(self, ids, skip_special_tokens=False):
"""Converts a sequence of ids in BPE tokens using the vocab."""
tokens = []
for i in ids:
if i in self.special_tokens_decoder:
if not skip_special_tokens:
tokens.append(self.special_tokens_decoder[i])
else:
tokens.append(self.decoder[i])
return tokens
def encode(self, text):
return self.convert_tokens_to_ids(self.tokenize(text))
def decode(self, tokens):
text = ''.join([self.decoder[token] for token in tokens])
text = bytearray([self.byte_decoder[c] for c in text]).decode('utf-8', errors=self.errors)
return text
def save_vocabulary(self, vocab_path):
"""Save the tokenizer vocabulary and merge files to a directory."""
if not os.path.isdir(vocab_path):
logger.error("Vocabulary path ({}) should be a directory".format(vocab_path))
return
vocab_file = os.path.join(vocab_path, VOCAB_NAME)
merge_file = os.path.join(vocab_path, MERGES_NAME)
special_tokens_file = os.path.join(vocab_path, SPECIAL_TOKENS_NAME)
with open(vocab_file, 'w', encoding='utf-8') as f:
f.write(json.dumps(self.encoder, ensure_ascii=False))
index = 0
with open(merge_file, "w", encoding="utf-8") as writer:
writer.write(u'#version: 0.2\n')
for bpe_tokens, token_index in sorted(self.bpe_ranks.items(), key=lambda kv: kv[1]):
if index != token_index:
logger.warning("Saving vocabulary to {}: BPE merge indices are not consecutive."
" Please check that the tokenizer is not corrupted!".format(merge_file))
index = token_index
writer.write(' '.join(bpe_tokens) + u'\n')
index += 1
index = len(self.encoder)
with open(special_tokens_file, 'w', encoding='utf-8') as writer:
for token, token_index in sorted(self.special_tokens.items(), key=lambda kv: kv[1]):
if index != token_index:
logger.warning("Saving special tokens vocabulary to {}: BPE indices are not consecutive."
" Please check that the tokenizer is not corrupted!".format(special_tokens_file))
index = token_index
writer.write(token + u'\n')
index += 1
return vocab_file, merge_file, special_tokens_file
megatron/deprecated_data_utils/wordpiece.py deleted 100755 → 0
View file @ ea81d62f
# coding=utf-8
# Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tokenization classes. Provided as is from https://github.com/huggingface/pytorch-pretrained-BERT/blob/master/pytorch_pretrained_bert/tokenization.py"""
from __future__ import absolute_import, division, print_function, unicode_literals
import collections
import logging
import os
import unicodedata
from io import open
from .file_utils import cached_path
logger = logging.getLogger(__name__)
PRETRAINED_VOCAB_ARCHIVE_MAP = {
'bert-base-uncased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-uncased-vocab.txt",
'bert-large-uncased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-large-uncased-vocab.txt",
'bert-base-cased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-cased-vocab.txt",
'bert-large-cased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-large-cased-vocab.txt",
'bert-base-multilingual-uncased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-multilingual-uncased-vocab.txt",
'bert-base-multilingual-cased': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-multilingual-cased-vocab.txt",
'bert-base-chinese': "https://s3.amazonaws.com/models.huggingface.co/bert/bert-base-chinese-vocab.txt",
}
PRETRAINED_VOCAB_POSITIONAL_EMBEDDINGS_SIZE_MAP = {
'bert-base-uncased': 512,
'bert-large-uncased': 512,
'bert-base-cased': 512,
'bert-large-cased': 512,
'bert-base-multilingual-uncased': 512,
'bert-base-multilingual-cased': 512,
'bert-base-chinese': 512,
}
VOCAB_NAME = 'vocab.txt'
def load_vocab(vocab_file):
"""Loads a vocabulary file into a dictionary."""
vocab = collections.OrderedDict()
index = 0
with open(vocab_file, "r", encoding="utf-8") as reader:
while True:
token = reader.readline()
if not token:
break
token = token.strip()
vocab[token] = index
index += 1
return vocab
def whitespace_tokenize(text):
"""Runs basic whitespace cleaning and splitting on a piece of text."""
text = text.strip()
if not text:
return []
tokens = text.split()
return tokens
class BertTokenizer(object):
"""Runs end-to-end tokenization: punctuation splitting + wordpiece"""
def __init__(self, vocab_file, do_lower_case=True, max_len=None, do_basic_tokenize=True,
never_split=("[UNK]", "[SEP]", "[PAD]", "[CLS]", "[MASK]")):
"""Constructs a BertTokenizer.
Args:
vocab_file: Path to a one-wordpiece-per-line vocabulary file
do_lower_case: Whether to lower case the input
Only has an effect when do_wordpiece_only=False
do_basic_tokenize: Whether to do basic tokenization before wordpiece.
max_len: An artificial maximum length to truncate tokenized sequences to;
Effective maximum length is always the minimum of this
value (if specified) and the underlying BERT model's
sequence length.
never_split: List of tokens which will never be split during tokenization.
Only has an effect when do_wordpiece_only=False
"""
if not os.path.isfile(vocab_file):
raise ValueError(
"Can't find a vocabulary file at path '{}'. To load the vocabulary from a Google pretrained "
"model use `tokenizer = BertTokenizer.from_pretrained(PRETRAINED_MODEL_NAME)`".format(vocab_file))
self.vocab = load_vocab(vocab_file)
self.ids_to_tokens = collections.OrderedDict(
[(ids, tok) for tok, ids in self.vocab.items()])
self.do_basic_tokenize = do_basic_tokenize
if do_basic_tokenize:
self.basic_tokenizer = BasicTokenizer(do_lower_case=do_lower_case,
never_split=never_split)
self.wordpiece_tokenizer = WordpieceTokenizer(vocab=self.vocab)
self.max_len = max_len if max_len is not None else int(1e12)
def tokenize(self, text):
if self.do_basic_tokenize:
split_tokens = []
for token in self.basic_tokenizer.tokenize(text):
for sub_token in self.wordpiece_tokenizer.tokenize(token):
split_tokens.append(sub_token)
else:
split_tokens = self.wordpiece_tokenizer.tokenize(text)
return split_tokens
def convert_tokens_to_ids(self, tokens):
"""Converts a sequence of tokens into ids using the vocab."""
ids = []
for token in tokens:
ids.append(self.vocab[token])
if len(ids) > self.max_len:
logger.warning(
"Token indices sequence length is longer than the specified maximum "
" sequence length for this BERT model ({} > {}). Running this"
" sequence through BERT will result in indexing errors".format(
len(ids), self.max_len)
)
return ids
def convert_ids_to_tokens(self, ids):
"""Converts a sequence of ids in wordpiece tokens using the vocab."""
tokens = []
for i in ids:
tokens.append(self.ids_to_tokens[i])
return tokens
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path, cache_dir=None, *inputs, **kwargs):
"""
Instantiate a PreTrainedBertModel from a pre-trained model file.
Download and cache the pre-trained model file if needed.
"""
if pretrained_model_name_or_path in PRETRAINED_VOCAB_ARCHIVE_MAP:
vocab_file = PRETRAINED_VOCAB_ARCHIVE_MAP[pretrained_model_name_or_path]
else:
vocab_file = pretrained_model_name_or_path
if os.path.isdir(vocab_file):
vocab_file = os.path.join(vocab_file, VOCAB_NAME)
# redirect to the cache, if necessary
try:
resolved_vocab_file = cached_path(vocab_file, cache_dir=cache_dir)
except EnvironmentError:
logger.error(
"Model name '{}' was not found in model name list ({}). "
"We assumed '{}' was a path or url but couldn't find any file "
"associated to this path or url.".format(
pretrained_model_name_or_path,
', '.join(PRETRAINED_VOCAB_ARCHIVE_MAP.keys()),
vocab_file))
return None
if resolved_vocab_file == vocab_file:
logger.info("loading vocabulary file {}".format(vocab_file))
else:
logger.info("loading vocabulary file {} from cache at {}".format(
vocab_file, resolved_vocab_file))
if pretrained_model_name_or_path in PRETRAINED_VOCAB_POSITIONAL_EMBEDDINGS_SIZE_MAP:
# if we're using a pretrained model, ensure the tokenizer wont index sequences longer
# than the number of positional embeddings
max_len = PRETRAINED_VOCAB_POSITIONAL_EMBEDDINGS_SIZE_MAP[pretrained_model_name_or_path]
kwargs['max_len'] = min(kwargs.get('max_len', int(1e12)), max_len)
# Instantiate tokenizer.
tokenizer = cls(resolved_vocab_file, *inputs, **kwargs)
return tokenizer
class BasicTokenizer(object):
"""Runs basic tokenization (punctuation splitting, lower casing, etc.)."""
def __init__(self,
do_lower_case=True,
never_split=("[UNK]", "[SEP]", "[PAD]", "[CLS]", "[MASK]")):
"""Constructs a BasicTokenizer.
Args:
do_lower_case: Whether to lower case the input.
"""
self.do_lower_case = do_lower_case
self.never_split = never_split
def tokenize(self, text):
"""Tokenizes a piece of text."""
text = self._clean_text(text)
# This was added on November 1st, 2018 for the multilingual and Chinese
# models. This is also applied to the English models now, but it doesn't
# matter since the English models were not trained on any Chinese data
# and generally don't have any Chinese data in them (there are Chinese
# characters in the vocabulary because Wikipedia does have some Chinese
# words in the English Wikipedia.).
text = self._tokenize_chinese_chars(text)
orig_tokens = whitespace_tokenize(text)
split_tokens = []
for token in orig_tokens:
if self.do_lower_case and token not in self.never_split:
token = token.lower()
token = self._run_strip_accents(token)
split_tokens.extend(self._run_split_on_punc(token))
output_tokens = whitespace_tokenize(" ".join(split_tokens))
return output_tokens
def _run_strip_accents(self, text):
"""Strips accents from a piece of text."""
text = unicodedata.normalize("NFD", text)
output = []
for char in text:
cat = unicodedata.category(char)
if cat == "Mn":
continue
output.append(char)
return "".join(output)
def _run_split_on_punc(self, text):
"""Splits punctuation on a piece of text."""
if text in self.never_split:
return [text]
chars = list(text)
i = 0
start_new_word = True
output = []
while i < len(chars):
char = chars[i]
if _is_punctuation(char):
output.append([char])
start_new_word = True
else:
if start_new_word:
output.append([])
start_new_word = False
output[-1].append(char)
i += 1
return ["".join(x) for x in output]
def _tokenize_chinese_chars(self, text):
"""Adds whitespace around any CJK character."""
output = []
for char in text:
cp = ord(char)
if self._is_chinese_char(cp):
output.append(" ")
output.append(char)
output.append(" ")
else:
output.append(char)
return "".join(output)
def _is_chinese_char(self, cp):
"""Checks whether CP is the codepoint of a CJK character."""
# This defines a "chinese character" as anything in the CJK Unicode block:
# https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block)
#
# Note that the CJK Unicode block is NOT all Japanese and Korean characters,
# despite its name. The modern Korean Hangul alphabet is a different block,
# as is Japanese Hiragana and Katakana. Those alphabets are used to write
# space-separated words, so they are not treated specially and handled
# like the all of the other languages.
if ((cp >= 0x4E00 and cp <= 0x9FFF) or #
(cp >= 0x3400 and cp <= 0x4DBF) or #
(cp >= 0x20000 and cp <= 0x2A6DF) or #
(cp >= 0x2A700 and cp <= 0x2B73F) or #
(cp >= 0x2B740 and cp <= 0x2B81F) or #
(cp >= 0x2B820 and cp <= 0x2CEAF) or
(cp >= 0xF900 and cp <= 0xFAFF) or #
(cp >= 0x2F800 and cp <= 0x2FA1F)): #
return True
return False
def _clean_text(self, text):
"""Performs invalid character removal and whitespace cleanup on text."""
output = []
for char in text:
cp = ord(char)
if cp == 0 or cp == 0xfffd or _is_control(char):
continue
if _is_whitespace(char):
output.append(" ")
else:
output.append(char)
return "".join(output)
class WordpieceTokenizer(object):
"""Runs WordPiece tokenization."""
def __init__(self, vocab, unk_token="[UNK]", max_input_chars_per_word=100):
self.vocab = vocab
self.unk_token = unk_token
self.max_input_chars_per_word = max_input_chars_per_word
def tokenize(self, text):
"""Tokenizes a piece of text into its word pieces.
This uses a greedy longest-match-first algorithm to perform tokenization
using the given vocabulary.
For example:
input = "unaffable"
output = ["un", "##aff", "##able"]
Args:
text: A single token or whitespace separated tokens. This should have
already been passed through `BasicTokenizer`.
Returns:
A list of wordpiece tokens.
"""
output_tokens = []
for token in whitespace_tokenize(text):
chars = list(token)
if len(chars) > self.max_input_chars_per_word:
output_tokens.append(self.unk_token)
continue
is_bad = False
start = 0
sub_tokens = []
while start < len(chars):
end = len(chars)
cur_substr = None
while start < end:
substr = "".join(chars[start:end])
if start > 0:
substr = "##" + substr
if substr in self.vocab:
cur_substr = substr
break
end -= 1
if cur_substr is None:
is_bad = True
break
sub_tokens.append(cur_substr)
start = end
if is_bad:
output_tokens.append(self.unk_token)
else:
output_tokens.extend(sub_tokens)
return output_tokens
def _is_whitespace(char):
"""Checks whether `chars` is a whitespace character."""
# \t, \n, and \r are technically contorl characters but we treat them
# as whitespace since they are generally considered as such.
if char == " " or char == "\t" or char == "\n" or char == "\r":
return True
cat = unicodedata.category(char)
if cat == "Zs":
return True
return False
def _is_control(char):
"""Checks whether `chars` is a control character."""
# These are technically control characters but we count them as whitespace
# characters.
if char == "\t" or char == "\n" or char == "\r":
return False
cat = unicodedata.category(char)
if cat.startswith("C"):
return True
return False
def _is_punctuation(char):
"""Checks whether `chars` is a punctuation character."""
cp = ord(char)
# We treat all non-letter/number ASCII as punctuation.
# Characters such as "^", "$", and "`" are not in the Unicode
# Punctuation class but we treat them as punctuation anyways, for
# consistency.
if ((cp >= 33 and cp <= 47) or (cp >= 58 and cp <= 64) or
(cp >= 91 and cp <= 96) or (cp >= 123 and cp <= 126)):
return True
cat = unicodedata.category(char)
if cat.startswith("P"):
return True
return False
megatron/training.py
View file @ 4311b695
...@@ -540,9 +540,12 @@ def build_train_valid_test_data_iterators( ...@@ -540,9 +540,12 @@ def build_train_valid_test_data_iterators(
train_val_test_num_samples) train_val_test_num_samples)
# Build dataloders. # Build dataloders.
train_dataloader = make_data_loader(train_ds) comsumed_samples = args.iteration * global_batch_size
valid_dataloader = make_data_loader(valid_ds) train_dataloader = make_data_loader(train_ds, comsumed_samples)
test_dataloader = make_data_loader(test_ds) comsumed_samples = (args.iteration // args.eval_interval) * \
args.eval_iters * global_batch_size
valid_dataloader = make_data_loader(valid_ds, comsumed_samples)
test_dataloader = make_data_loader(test_ds, comsumed_samples)
# Flags to know if we need to do training/validation/testing. # Flags to know if we need to do training/validation/testing.
do_train = train_dataloader is not None and args.train_iters > 0 do_train = train_dataloader is not None and args.train_iters > 0
...@@ -561,21 +564,7 @@ def build_train_valid_test_data_iterators( ...@@ -561,21 +564,7 @@ def build_train_valid_test_data_iterators(
args.do_train = flags[0].item() args.do_train = flags[0].item()
args.do_valid = flags[1].item() args.do_valid = flags[1].item()
args.do_test = flags[2].item() args.do_test = flags[2].item()
# Shift the start iterations.
if train_dataloader is not None:
train_dataloader.batch_sampler.start_iter = args.iteration % \
len(train_dataloader)
print_rank_0('setting training data start iteration to {}'.
format(train_dataloader.batch_sampler.start_iter))
if valid_dataloader is not None:
start_iter_val = (args.iteration // args.eval_interval) * \
args.eval_iters
valid_dataloader.batch_sampler.start_iter = start_iter_val % \
len(valid_dataloader)
print_rank_0('setting validation data start iteration to {}'.
format(valid_dataloader.batch_sampler.start_iter))
# Build iterators. # Build iterators.
if train_dataloader is not None: if train_dataloader is not None:
train_data_iterator = iter(train_dataloader) train_data_iterator = iter(train_dataloader)
......
megatron/utils.py
View file @ 4311b695
...@@ -24,7 +24,7 @@ from megatron import print_rank_0 ...@@ -24,7 +24,7 @@ from megatron import print_rank_0
from megatron import get_adlr_autoresume from megatron import get_adlr_autoresume
from megatron import mpu from megatron import mpu
from megatron.checkpointing import save_checkpoint from megatron.checkpointing import save_checkpoint
from megatron.data.samplers import DistributedBatchSampler from megatron.data.sampler import MegatronPretrainingSampler
from megatron.fp16 import FP16_Optimizer from megatron.fp16 import FP16_Optimizer
...@@ -89,7 +89,7 @@ def check_adlr_autoresume_termination(iteration, model, ...@@ -89,7 +89,7 @@ def check_adlr_autoresume_termination(iteration, model,
sys.exit(0) sys.exit(0)
def make_data_loader(dataset): def make_data_loader(dataset, consumed_samples):
"""Buld dataloader given an input dataset.""" """Buld dataloader given an input dataset."""
if dataset is None: if dataset is None:
return None return None
...@@ -101,13 +101,11 @@ def make_data_loader(dataset): ...@@ -101,13 +101,11 @@ def make_data_loader(dataset):
global_batch_size = args.batch_size * world_size global_batch_size = args.batch_size * world_size
num_workers = args.num_workers num_workers = args.num_workers
# Use a simple sampler with distributed batch sampler. # Megatron sampler
sampler = torch.utils.data.SequentialSampler(dataset) batch_sampler = MegatronPretrainingSampler(
batch_sampler = DistributedBatchSampler(sampler=sampler, total_samples=len(dataset), consumed_samples=consumed_samples,
batch_size=global_batch_size, global_batch_size=global_batch_size, rank=rank, world_size=world_size)
drop_last=True,
rank=rank,
world_size=world_size)
# Torch dataloader. # Torch dataloader.
return torch.utils.data.DataLoader(dataset, return torch.utils.data.DataLoader(dataset,
batch_sampler=batch_sampler, batch_sampler=batch_sampler,
......
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