Datasets:

zzhowe1207
/

tet-rl

# Copyright 2024 Bytedance Ltd. and/or its affiliates
#
# 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.

import numpy as np
import torch

from verl.protocol import DataProto
from verl.utils.seqlen_balancing import prepare_dynamic_batch, restore_dynamic_batch


def _create_random_mask(
    input_ids: torch.Tensor,
    max_ratio_of_valid_token: float,
    max_ratio_of_left_padding: float,
    min_ratio_of_valid_token: float = 0,
) -> torch.Tensor:
    """Create a random mask given input_ids. Support left padding and right padding.
    Process:
    - Sample valid token length
    - Sample left_padding length
    - Generate padding
    Args:
        input_ids:
            shape (batch_size, seq_len)
    Returns:
        mask:
            shape (batch_size, seq_len)
    """
    assert max_ratio_of_valid_token > 0 and max_ratio_of_valid_token <= 1.0
    assert max_ratio_of_left_padding >= 0 and max_ratio_of_left_padding < 1.0
    assert min_ratio_of_valid_token <= max_ratio_of_valid_token

    batch_size, sequence_length = input_ids.shape
    max_num_valid_tokens = int(sequence_length * max_ratio_of_valid_token)
    min_num_valid_tokens = max(1, int(sequence_length * min_ratio_of_valid_token))
    max_left_padding = int(sequence_length * max_ratio_of_left_padding)
    assert max_num_valid_tokens + max_left_padding <= sequence_length
    assert max_num_valid_tokens > 0 and max_ratio_of_valid_token <= sequence_length
    mask = torch.ones_like(input_ids, dtype=torch.int64)
    # TODO: we can make this faster
    for i in range(batch_size):
        num_left_padding = np.random.randint(low=0, high=max_left_padding + 1, dtype=np.int64)
        num_valid = np.random.randint(low=min_num_valid_tokens, high=max_num_valid_tokens + 1, dtype=np.int64)

        for index in range(num_left_padding):
            mask[i, index] = 0

        for index in range(num_left_padding + num_valid, sequence_length):
            mask[i, index] = 0

    return mask


def test_dynamic_batch():
    input_ids = torch.randint(low=0, high=10, size=(20, 100))
    attention_mask = _create_random_mask(
        input_ids=input_ids, max_ratio_of_left_padding=0.1, max_ratio_of_valid_token=0.9, min_ratio_of_valid_token=0.5
    )
    data = {"input_ids": input_ids, "attention_mask": attention_mask}
    dataproto = DataProto.from_single_dict(data)
    micro_batches, micro_bsz_idx_lst = prepare_dynamic_batch(dataproto, max_token_len=300)
    input_ids = torch.cat([micro_batch.batch["input_ids"] for micro_batch in micro_batches], dim=0)
    input_ids = restore_dynamic_batch(input_ids, micro_bsz_idx_lst)
    torch.testing.assert_close(input_ids, dataproto.batch["input_ids"])

	# Copyright 2024 Bytedance Ltd. and/or its affiliates
	#
	# 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.

	import numpy as np
	import torch

	from verl.protocol import DataProto
	from verl.utils.seqlen_balancing import prepare_dynamic_batch, restore_dynamic_batch


	def _create_random_mask(
	input_ids: torch.Tensor,
	max_ratio_of_valid_token: float,
	max_ratio_of_left_padding: float,
	min_ratio_of_valid_token: float = 0,
	) -> torch.Tensor:
	"""Create a random mask given input_ids. Support left padding and right padding.

	Process:
	- Sample valid token length
	- Sample left_padding length
	- Generate padding

	Args:
	input_ids:
	shape (batch_size, seq_len)

	Returns:
	mask:
	shape (batch_size, seq_len)
	"""
	assert max_ratio_of_valid_token > 0 and max_ratio_of_valid_token <= 1.0
	assert max_ratio_of_left_padding >= 0 and max_ratio_of_left_padding < 1.0
	assert min_ratio_of_valid_token <= max_ratio_of_valid_token

	batch_size, sequence_length = input_ids.shape
	max_num_valid_tokens = int(sequence_length * max_ratio_of_valid_token)
	min_num_valid_tokens = max(1, int(sequence_length * min_ratio_of_valid_token))
	max_left_padding = int(sequence_length * max_ratio_of_left_padding)
	assert max_num_valid_tokens + max_left_padding <= sequence_length
	assert max_num_valid_tokens > 0 and max_ratio_of_valid_token <= sequence_length
	mask = torch.ones_like(input_ids, dtype=torch.int64)
	# TODO: we can make this faster
	for i in range(batch_size):
	num_left_padding = np.random.randint(low=0, high=max_left_padding + 1, dtype=np.int64)
	num_valid = np.random.randint(low=min_num_valid_tokens, high=max_num_valid_tokens + 1, dtype=np.int64)

	for index in range(num_left_padding):
	mask[i, index] = 0

	for index in range(num_left_padding + num_valid, sequence_length):
	mask[i, index] = 0

	return mask


	def test_dynamic_batch():
	input_ids = torch.randint(low=0, high=10, size=(20, 100))
	attention_mask = _create_random_mask(
	input_ids=input_ids, max_ratio_of_left_padding=0.1, max_ratio_of_valid_token=0.9, min_ratio_of_valid_token=0.5
	)
	data = {"input_ids": input_ids, "attention_mask": attention_mask}
	dataproto = DataProto.from_single_dict(data)
	micro_batches, micro_bsz_idx_lst = prepare_dynamic_batch(dataproto, max_token_len=300)
	input_ids = torch.cat([micro_batch.batch["input_ids"] for micro_batch in micro_batches], dim=0)
	input_ids = restore_dynamic_batch(input_ids, micro_bsz_idx_lst)
	torch.testing.assert_close(input_ids, dataproto.batch["input_ids"])