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# Copyright 2023 The HuggingFace Team. 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.
import unittest
import numpy as np
from transformers import BloomConfig, BloomTokenizerFast, is_flax_available
from transformers.testing_utils import require_flax, slow
from ...generation.test_flax_utils import FlaxGenerationTesterMixin
from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor
if is_flax_available():
import os
# The slow tests are often failing with OOM error on GPU
# This makes JAX allocate exactly what is needed on demand, and deallocate memory that is no longer needed
# but will be slower as stated here https://jax.readthedocs.io/en/latest/gpu_memory_allocation.html
os.environ["XLA_PYTHON_CLIENT_ALLOCATOR"] = "platform"
import jax.numpy as jnp
from transformers import FlaxBloomForCausalLM, FlaxBloomModel
def prepare_bloom_inputs_dict(config, input_ids, attention_mask=None):
if attention_mask is None:
attention_mask = np.where(input_ids != config.pad_token_id, 1, 0)
return {"input_ids": input_ids, "attention_mask": attention_mask}
@require_flax
class FlaxBloomModelTester:
def __init__(
self,
parent,
batch_size=13,
seq_length=7,
is_training=True,
use_labels=False,
vocab_size=99,
hidden_size=16,
n_layer=2,
n_head=4,
hidden_act="gelu",
hidden_dropout=0.1,
attention_probs_dropout_prob=0.1,
eos_token_id=2,
pad_token_id=1,
bos_token_id=0,
initializer_range=0.02,
apply_residual_connection_post_layernorm=False,
):
self.parent = parent
self.batch_size = batch_size
self.seq_length = seq_length
self.is_training = is_training
self.use_labels = use_labels
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.num_hidden_layers = n_layer
self.num_attention_heads = n_head
self.hidden_act = hidden_act
self.hidden_dropout = hidden_dropout
self.attention_probs_dropout_prob = attention_probs_dropout_prob
self.eos_token_id = eos_token_id
self.pad_token_id = pad_token_id
self.bos_token_id = bos_token_id
self.initializer_range = initializer_range
self.is_encoder_decoder = False
self.apply_residual_connection_post_layernorm = apply_residual_connection_post_layernorm
def prepare_config_and_inputs(self):
input_ids = np.clip(ids_tensor([self.batch_size, self.seq_length - 1], self.vocab_size), 3, self.vocab_size)
input_ids = np.concatenate((input_ids, 2 * np.ones((self.batch_size, 1), dtype=np.int64)), -1)
config = BloomConfig(
vocab_size=self.vocab_size,
hidden_size=self.hidden_size,
n_layer=self.num_hidden_layers,
n_head=self.num_attention_heads,
hidden_dropout=self.hidden_dropout,
attention_dropout=self.attention_probs_dropout_prob,
eos_token_id=self.eos_token_id,
bos_token_id=self.bos_token_id,
pad_token_id=self.pad_token_id,
is_encoder_decoder=False,
use_cache=False,
)
inputs_dict = prepare_bloom_inputs_dict(config, input_ids)
return config, inputs_dict
def prepare_config_and_inputs_for_common(self):
config, inputs_dict = self.prepare_config_and_inputs()
return config, inputs_dict
def check_use_cache_forward(self, model_class_name, config, inputs_dict):
max_length = 20
model = model_class_name(config)
input_ids = inputs_dict["input_ids"]
attention_mask = jnp.ones((input_ids.shape[0], max_length), dtype="i4")
past_key_values = model.init_cache(input_ids.shape[0], max_length)
outputs_cache = model(
input_ids[:, :-1],
attention_mask=attention_mask,
past_key_values=past_key_values,
)
outputs_cache_next = model(
input_ids[:, -1:],
attention_mask=attention_mask,
past_key_values=outputs_cache.past_key_values,
)
outputs = model(input_ids)
diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])))
self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}")
def check_use_cache_forward_with_attn_mask(self, model_class_name, config, inputs_dict):
max_length = 20
model = model_class_name(config)
input_ids, attention_mask = (
inputs_dict["input_ids"],
inputs_dict["attention_mask"],
)
attention_mask_cache = jnp.concatenate(
[
attention_mask,
jnp.zeros((attention_mask.shape[0], max_length - attention_mask.shape[1])),
],
axis=-1,
)
past_key_values = model.init_cache(input_ids.shape[0], max_length)
outputs_cache = model(
input_ids[:, :-1],
attention_mask=attention_mask_cache,
past_key_values=past_key_values,
)
outputs_cache_next = model(
input_ids[:, -1:],
past_key_values=outputs_cache.past_key_values,
attention_mask=attention_mask_cache,
)
outputs = model(input_ids, attention_mask=attention_mask)
diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])))
self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}")
@require_flax
class FlaxBloomModelTest(FlaxModelTesterMixin, unittest.TestCase, FlaxGenerationTesterMixin):
all_model_classes = (FlaxBloomModel, FlaxBloomForCausalLM) if is_flax_available() else ()
all_generative_model_classes = () if is_flax_available() else ()
def setUp(self):
self.model_tester = FlaxBloomModelTester(self)
def test_use_cache_forward(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs()
for model_class in self.all_model_classes:
self.model_tester.check_use_cache_forward(model_class, config, inputs_dict)
def test_use_cache_forward_with_attn_mask(self):
config, inputs_dict = self.model_tester.prepare_config_and_inputs()
for model_class in self.all_model_classes:
self.model_tester.check_use_cache_forward_with_attn_mask(model_class, config, inputs_dict)
@slow
def test_model_from_pretrained(self):
for model_class_name in self.all_model_classes:
model = model_class_name.from_pretrained("bigscience/bloom-560m")
input_ids = np.ones((1, 1)) * model.config.eos_token_id
outputs = model(input_ids)
self.assertIsNotNone(outputs)
@slow
@require_flax
class FlaxBloomGenerationTest(unittest.TestCase):
all_model_classes = (FlaxBloomForCausalLM,) if is_flax_available() else ()
all_generative_model_classes = () if is_flax_available() else ()
def setUp(self):
self.model_id = "bigscience/bloom-560m"
self.tokenizer = BloomTokenizerFast.from_pretrained(self.model_id, padding_side="left")
self.model_tester = FlaxBloomModelTester(self)
self.model = FlaxBloomForCausalLM.from_pretrained(self.model_id, from_pt=True, revision="gs555750")
def test_model_batched_gen(self):
# tests if the model outputs the same generation for the same batched input
input_sentences = [
"Hello there is this string is definitely longer I believe that",
"Hello there is this string is definitely longer I believe that",
]
inputs = self.tokenizer(input_sentences, return_tensors="np", padding=True, truncation=True)
sequences_fx = self.model.generate(**inputs, max_length=20).sequences
self.assertEqual(sequences_fx[0].tolist(), sequences_fx[1].tolist())
def test_model_batched_padding_left(self):
# tests if the model outputs the same generation for an input that is part of a batch
# and a single input
input_sentences_batch = [
"Hello there is this string is definitely longer I believe that",
"Hi I want to order",
]
inputs = self.tokenizer(input_sentences_batch, return_tensors="np", padding=True, truncation=True)
sequences_fx_batch = self.model.generate(**inputs, max_length=20).sequences
input_sentence_simple = "Hi I want to order"
inputs_simple = self.tokenizer(input_sentence_simple, return_tensors="np")
sequences_fx_simple = self.model.generate(**inputs_simple, max_length=20).sequences
self.assertEqual(sequences_fx_batch[1][6:].tolist(), sequences_fx_simple[0][:-6].tolist())
def test_batch_generated_text(self):
input_sentences = [
"Hello what is",
"Running a quick test with the",
]
inputs = self.tokenizer(input_sentences, return_tensors="np", padding=True, truncation=True)
generated_ids = self.model.generate(**inputs, max_length=20).sequences
generated_text = self.tokenizer.batch_decode(generated_ids, skip_special_tokens=True)
# these generations match those of the PyTorch model, ensuring correctness
EXPECTED_GENERATIONS = [
"Hello what is the best way to get the data from the server? I have tried",
"Running a quick test with the following command:\nsudo apt-get install python3\nsudo apt-get install python2",
]
self.assertListEqual(generated_text, EXPECTED_GENERATIONS)
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