mirror of
https://github.com/huggingface/transformers.git
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221 lines
8.3 KiB
Python
221 lines
8.3 KiB
Python
# Copyright 2021 The HuggingFace Team. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import unittest
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import numpy as np
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from transformers import GPT2Tokenizer, GPTJConfig, is_flax_available
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from transformers.testing_utils import require_flax, tooslow
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from ...test_modeling_flax_common import FlaxModelTesterMixin, ids_tensor, random_attention_mask
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if is_flax_available():
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import jax
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import jax.numpy as jnp
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from transformers.models.gptj.modeling_flax_gptj import FlaxGPTJForCausalLM, FlaxGPTJModel
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class FlaxGPTJModelTester:
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def __init__(
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self,
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parent,
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batch_size=14,
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seq_length=7,
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is_training=True,
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use_input_mask=True,
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use_token_type_ids=False,
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use_labels=True,
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vocab_size=99,
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hidden_size=32,
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rotary_dim=4,
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num_hidden_layers=2,
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num_attention_heads=4,
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intermediate_size=37,
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hidden_act="gelu",
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hidden_dropout_prob=0.1,
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attention_probs_dropout_prob=0.1,
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max_position_embeddings=512,
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initializer_range=0.02,
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):
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self.parent = parent
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self.batch_size = batch_size
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self.seq_length = seq_length
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self.is_training = is_training
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self.use_input_mask = use_input_mask
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self.use_token_type_ids = use_token_type_ids
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self.use_labels = use_labels
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self.vocab_size = vocab_size
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self.hidden_size = hidden_size
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self.rotary_dim = rotary_dim
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self.num_hidden_layers = num_hidden_layers
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self.num_attention_heads = num_attention_heads
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self.intermediate_size = intermediate_size
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self.hidden_act = hidden_act
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self.hidden_dropout_prob = hidden_dropout_prob
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self.attention_probs_dropout_prob = attention_probs_dropout_prob
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self.max_position_embeddings = max_position_embeddings
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self.initializer_range = initializer_range
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self.scope = None
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self.bos_token_id = vocab_size - 1
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self.eos_token_id = vocab_size - 1
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self.pad_token_id = vocab_size - 1
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def prepare_config_and_inputs(self):
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input_ids = ids_tensor([self.batch_size, self.seq_length], self.vocab_size)
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input_mask = None
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if self.use_input_mask:
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input_mask = random_attention_mask([self.batch_size, self.seq_length])
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config = GPTJConfig(
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vocab_size=self.vocab_size,
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n_embd=self.hidden_size,
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n_layer=self.num_hidden_layers,
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n_head=self.num_attention_heads,
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n_positions=self.max_position_embeddings,
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use_cache=False,
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bos_token_id=self.bos_token_id,
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eos_token_id=self.eos_token_id,
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pad_token_id=self.pad_token_id,
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rotary_dim=self.rotary_dim,
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)
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return (config, input_ids, input_mask)
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def prepare_config_and_inputs_for_common(self):
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config_and_inputs = self.prepare_config_and_inputs()
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config, input_ids, attention_mask = config_and_inputs
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inputs_dict = {"input_ids": input_ids, "attention_mask": attention_mask}
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return config, inputs_dict
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def check_use_cache_forward(self, model_class_name, config, input_ids, attention_mask):
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max_decoder_length = 20
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model = model_class_name(config)
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past_key_values = model.init_cache(input_ids.shape[0], max_decoder_length)
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attention_mask = jnp.ones((input_ids.shape[0], max_decoder_length), dtype="i4")
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position_ids = jnp.broadcast_to(
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jnp.arange(input_ids.shape[-1] - 1)[None, :], (input_ids.shape[0], input_ids.shape[-1] - 1)
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)
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outputs_cache = model(
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input_ids[:, :-1],
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attention_mask=attention_mask,
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past_key_values=past_key_values,
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position_ids=position_ids,
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)
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position_ids = jnp.array(input_ids.shape[0] * [[input_ids.shape[-1] - 1]], dtype="i4")
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outputs_cache_next = model(
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input_ids[:, -1:],
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attention_mask=attention_mask,
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past_key_values=outputs_cache.past_key_values,
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position_ids=position_ids,
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)
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outputs = model(input_ids)
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diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])))
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self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}")
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def check_use_cache_forward_with_attn_mask(self, model_class_name, config, input_ids, attention_mask):
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max_decoder_length = 20
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model = model_class_name(config)
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attention_mask_cache = jnp.concatenate(
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[attention_mask, jnp.zeros((attention_mask.shape[0], max_decoder_length - attention_mask.shape[1]))],
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axis=-1,
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)
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past_key_values = model.init_cache(input_ids.shape[0], max_decoder_length)
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position_ids = jnp.broadcast_to(
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jnp.arange(input_ids.shape[-1] - 1)[None, :], (input_ids.shape[0], input_ids.shape[-1] - 1)
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)
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outputs_cache = model(
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input_ids[:, :-1],
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attention_mask=attention_mask_cache,
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past_key_values=past_key_values,
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position_ids=position_ids,
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)
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position_ids = jnp.array(input_ids.shape[0] * [[input_ids.shape[-1] - 1]], dtype="i4")
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outputs_cache_next = model(
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input_ids[:, -1:],
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past_key_values=outputs_cache.past_key_values,
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attention_mask=attention_mask_cache,
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position_ids=position_ids,
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)
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outputs = model(input_ids, attention_mask=attention_mask)
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diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])))
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self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}")
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@require_flax
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class FlaxGPTJModelTest(FlaxModelTesterMixin, unittest.TestCase):
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all_model_classes = (FlaxGPTJModel, FlaxGPTJForCausalLM) if is_flax_available() else ()
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def setUp(self):
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self.model_tester = FlaxGPTJModelTester(self)
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def test_use_cache_forward(self):
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for model_class_name in self.all_model_classes:
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config, input_ids, attention_mask = self.model_tester.prepare_config_and_inputs()
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self.model_tester.check_use_cache_forward(model_class_name, config, input_ids, attention_mask)
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def test_use_cache_forward_with_attn_mask(self):
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for model_class_name in self.all_model_classes:
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config, input_ids, attention_mask = self.model_tester.prepare_config_and_inputs()
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self.model_tester.check_use_cache_forward_with_attn_mask(
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model_class_name, config, input_ids, attention_mask
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)
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@tooslow
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def test_batch_generation(self):
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tokenizer = GPT2Tokenizer.from_pretrained(
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"openai-community/gpt2", pad_token="<|endoftext|>", padding_side="left"
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)
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inputs = tokenizer(["Hello this is a long string", "Hey"], return_tensors="np", padding=True, truncation=True)
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model = FlaxGPTJForCausalLM.from_pretrained("EleutherAI/gpt-j-6B")
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model.do_sample = False
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model.config.pad_token_id = model.config.eos_token_id
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jit_generate = jax.jit(model.generate)
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output_sequences = jit_generate(
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inputs["input_ids"], attention_mask=inputs["attention_mask"], pad_token_id=tokenizer.pad_token_id
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).sequences
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output_string = tokenizer.batch_decode(output_sequences, skip_special_tokens=True)
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expected_string = [
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"Hello this is a long string of text.\n\nI'm trying to get the text of the",
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"Hey, I'm a little late to the party. I'm going to",
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]
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self.assertListEqual(output_string, expected_string)
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@tooslow
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def test_model_from_pretrained(self):
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for model_class_name in self.all_model_classes:
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model = model_class_name.from_pretrained("EleutherAI/gpt-j-6B")
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outputs = model(np.ones((1, 1)))
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self.assertIsNotNone(outputs)
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