433 lines
20 KiB
Python
433 lines
20 KiB
Python
# coding=utf-8
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# Copyright 2022 The HuggingFace Inc. 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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"""Testing suite for the PyTorch GPTNeoX model."""
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import unittest
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from parameterized import parameterized
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from transformers import AutoTokenizer, GPTNeoXConfig, is_torch_available, set_seed
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from transformers.testing_utils import require_torch, slow, torch_device
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from ...generation.test_utils import GenerationTesterMixin
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from ...test_configuration_common import ConfigTester
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from ...test_modeling_common import ModelTesterMixin, ids_tensor, random_attention_mask
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from ...test_pipeline_mixin import PipelineTesterMixin
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if is_torch_available():
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import torch
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from transformers import (
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GPTNeoXForCausalLM,
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GPTNeoXForQuestionAnswering,
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GPTNeoXForSequenceClassification,
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GPTNeoXForTokenClassification,
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GPTNeoXModel,
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)
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from transformers.models.gpt_neox.modeling_gpt_neox import (
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GPTNeoXDynamicNTKScalingRotaryEmbedding,
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GPTNeoXLinearScalingRotaryEmbedding,
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GPTNeoXRotaryEmbedding,
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)
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class GPTNeoXModelTester:
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def __init__(
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self,
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parent,
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batch_size=13,
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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=True,
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use_labels=True,
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vocab_size=99,
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hidden_size=64,
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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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type_vocab_size=16,
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type_sequence_label_size=2,
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initializer_range=0.02,
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num_labels=3,
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num_choices=4,
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scope=None,
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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.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.type_vocab_size = type_vocab_size
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self.type_sequence_label_size = type_sequence_label_size
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self.initializer_range = initializer_range
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self.num_labels = num_labels
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self.num_choices = num_choices
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self.scope = scope
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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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token_labels = None
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if self.use_labels:
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token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels)
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config = self.get_config()
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return config, input_ids, input_mask, token_labels
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def get_config(self):
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return GPTNeoXConfig(
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vocab_size=self.vocab_size,
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hidden_size=self.hidden_size,
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num_hidden_layers=self.num_hidden_layers,
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num_attention_heads=self.num_attention_heads,
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intermediate_size=self.intermediate_size,
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hidden_act=self.hidden_act,
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hidden_dropout_prob=self.hidden_dropout_prob,
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attention_probs_dropout_prob=self.attention_probs_dropout_prob,
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max_position_embeddings=self.max_position_embeddings,
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type_vocab_size=self.type_vocab_size,
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is_decoder=False,
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initializer_range=self.initializer_range,
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pad_token_id=self.pad_token_id,
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)
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def prepare_config_and_inputs_for_decoder(self):
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config, input_ids, input_mask, token_labels = self.prepare_config_and_inputs()
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config.is_decoder = True
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return config, input_ids, input_mask, token_labels
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def create_and_check_model(self, config, input_ids, input_mask):
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model = GPTNeoXModel(config=config)
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model.to(torch_device)
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model.eval()
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_ = model(input_ids, attention_mask=input_mask)
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result = model(input_ids)
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self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size))
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def create_and_check_model_as_decoder(self, config, input_ids, input_mask):
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config.add_cross_attention = True
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model = GPTNeoXModel(config)
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model.to(torch_device)
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model.eval()
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result = model(input_ids, attention_mask=input_mask)
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self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.seq_length, self.hidden_size))
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def create_and_check_for_causal_lm(self, config, input_ids, input_mask, token_labels):
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model = GPTNeoXForCausalLM(config=config)
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model.to(torch_device)
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model.eval()
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result = model(input_ids, attention_mask=input_mask, labels=token_labels)
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self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.vocab_size))
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def create_and_check_for_question_answering(self, config, input_ids, input_mask, token_labels):
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config.num_labels = self.num_labels
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model = GPTNeoXForQuestionAnswering(config)
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model.to(torch_device)
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model.eval()
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result = model(input_ids, attention_mask=input_mask)
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self.parent.assertEqual(result.start_logits.shape, (self.batch_size, self.seq_length))
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self.parent.assertEqual(result.end_logits.shape, (self.batch_size, self.seq_length))
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def create_and_check_for_sequence_classification(self, config, input_ids, input_mask, token_labels):
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config.num_labels = self.num_labels
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model = GPTNeoXForSequenceClassification(config)
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model.to(torch_device)
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model.eval()
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sequence_labels = ids_tensor([self.batch_size], self.type_sequence_label_size)
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result = model(input_ids, attention_mask=input_mask, labels=sequence_labels)
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self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels))
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def create_and_check_for_token_classification(self, config, input_ids, input_mask, token_labels):
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config.num_labels = self.num_labels
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model = GPTNeoXForTokenClassification(config)
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model.to(torch_device)
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model.eval()
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result = model(input_ids, attention_mask=input_mask, labels=token_labels)
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self.parent.assertEqual(result.logits.shape, (self.batch_size, self.seq_length, self.num_labels))
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def create_and_check_decoder_model_past_large_inputs(self, config, input_ids, input_mask):
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config.is_decoder = True
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model = GPTNeoXForCausalLM(config=config)
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model.to(torch_device)
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model.eval()
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# first forward pass
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outputs = model(input_ids, attention_mask=input_mask, use_cache=True)
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past_key_values = outputs.past_key_values
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# create hypothetical multiple next token and extent to next_input_ids
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next_tokens = ids_tensor((self.batch_size, 3), config.vocab_size)
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next_mask = ids_tensor((self.batch_size, 3), vocab_size=2)
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# append to next input_ids and
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next_input_ids = torch.cat([input_ids, next_tokens], dim=-1)
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next_attention_mask = torch.cat([input_mask, next_mask], dim=-1)
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output_from_no_past = model(next_input_ids, attention_mask=next_attention_mask, output_hidden_states=True)
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output_from_no_past = output_from_no_past["hidden_states"][0]
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output_from_past = model(
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next_tokens,
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attention_mask=next_attention_mask,
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past_key_values=past_key_values,
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output_hidden_states=True,
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)["hidden_states"][0]
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# select random slice
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random_slice_idx = ids_tensor((1,), output_from_past.shape[-1]).item()
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output_from_no_past_slice = output_from_no_past[:, -3:, random_slice_idx].detach()
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output_from_past_slice = output_from_past[:, :, random_slice_idx].detach()
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self.parent.assertTrue(output_from_past_slice.shape[1] == next_tokens.shape[1])
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# test that outputs are equal for slice
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self.parent.assertTrue(torch.allclose(output_from_past_slice, output_from_no_past_slice, atol=1e-3))
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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, input_mask, token_labels = config_and_inputs
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inputs_dict = {"input_ids": input_ids, "attention_mask": input_mask}
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return config, inputs_dict
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@require_torch
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class GPTNeoXModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTesterMixin, unittest.TestCase):
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all_model_classes = (
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(
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GPTNeoXModel,
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GPTNeoXForCausalLM,
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GPTNeoXForQuestionAnswering,
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GPTNeoXForSequenceClassification,
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GPTNeoXForTokenClassification,
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)
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if is_torch_available()
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else ()
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)
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all_generative_model_classes = (GPTNeoXForCausalLM,) if is_torch_available() else ()
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pipeline_model_mapping = (
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{
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"feature-extraction": GPTNeoXModel,
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"question-answering": GPTNeoXForQuestionAnswering,
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"text-classification": GPTNeoXForSequenceClassification,
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"text-generation": GPTNeoXForCausalLM,
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"token-classification": GPTNeoXForTokenClassification,
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"zero-shot": GPTNeoXForSequenceClassification,
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}
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if is_torch_available()
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else {}
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)
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test_pruning = False
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test_missing_keys = False
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test_model_parallel = False
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test_head_masking = False
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def setUp(self):
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self.model_tester = GPTNeoXModelTester(self)
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self.config_tester = ConfigTester(self, config_class=GPTNeoXConfig, hidden_size=64, num_attention_heads=8)
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def test_config(self):
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self.config_tester.run_common_tests()
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def test_model(self):
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config, input_ids, input_mask, token_labels = self.model_tester.prepare_config_and_inputs()
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self.model_tester.create_and_check_model(config, input_ids, input_mask)
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def test_model_as_decoder(self):
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config, input_ids, input_mask, token_labels = self.model_tester.prepare_config_and_inputs_for_decoder()
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self.model_tester.create_and_check_model_as_decoder(config, input_ids, input_mask)
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def test_model_as_decoder_with_default_input_mask(self):
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# This regression test was failing with PyTorch < 1.3
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config, input_ids, input_mask, token_labels = self.model_tester.prepare_config_and_inputs_for_decoder()
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input_mask = None
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self.model_tester.create_and_check_model_as_decoder(config, input_ids, input_mask)
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def test_decoder_model_past_large_inputs(self):
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config, input_ids, input_mask, token_labels = self.model_tester.prepare_config_and_inputs()
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self.model_tester.create_and_check_decoder_model_past_large_inputs(config, input_ids, input_mask)
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def test_model_for_causal_lm(self):
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config_and_inputs = self.model_tester.prepare_config_and_inputs()
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self.model_tester.create_and_check_for_causal_lm(*config_and_inputs)
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def test_model_for_question_answering(self):
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config_and_inputs = self.model_tester.prepare_config_and_inputs()
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self.model_tester.create_and_check_for_question_answering(*config_and_inputs)
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def test_model_for_sequence_classification(self):
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config_and_inputs = self.model_tester.prepare_config_and_inputs()
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self.model_tester.create_and_check_for_sequence_classification(*config_and_inputs)
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def test_model_for_token_classification(self):
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config_and_inputs = self.model_tester.prepare_config_and_inputs()
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self.model_tester.create_and_check_for_token_classification(*config_and_inputs)
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@unittest.skip(reason="Feed forward chunking is not implemented")
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def test_feed_forward_chunking(self):
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pass
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@parameterized.expand([("linear",), ("dynamic",)])
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# Copied from tests.models.llama.test_modeling_llama.LlamaModelTest.test_model_rope_scaling_from_config with Llama->GPTNeoX
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def test_model_rope_scaling_from_config(self, scaling_type):
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config, _ = self.model_tester.prepare_config_and_inputs_for_common()
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short_input = ids_tensor([1, 10], config.vocab_size)
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long_input = ids_tensor([1, int(config.max_position_embeddings * 1.5)], config.vocab_size)
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set_seed(42) # Fixed seed at init time so the two models get the same random weights
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original_model = GPTNeoXModel(config)
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original_model.to(torch_device)
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original_model.eval()
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original_short_output = original_model(short_input).last_hidden_state
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original_long_output = original_model(long_input).last_hidden_state
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set_seed(42) # Fixed seed at init time so the two models get the same random weights
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config.rope_scaling = {"type": scaling_type, "factor": 10.0}
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scaled_model = GPTNeoXModel(config)
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scaled_model.to(torch_device)
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scaled_model.eval()
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scaled_short_output = scaled_model(short_input).last_hidden_state
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scaled_long_output = scaled_model(long_input).last_hidden_state
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# Dynamic scaling does not change the RoPE embeddings until it receives an input longer than the original
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# maximum sequence length, so the outputs for the short input should match.
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if scaling_type == "dynamic":
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self.assertTrue(torch.allclose(original_short_output, scaled_short_output, atol=1e-5))
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else:
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self.assertFalse(torch.allclose(original_short_output, scaled_short_output, atol=1e-5))
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# The output should be different for long inputs
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self.assertFalse(torch.allclose(original_long_output, scaled_long_output, atol=1e-5))
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# Copied from tests.models.falcon.test_modeling_falcon.FalconModelTest.test_model_rope_scaling with Falcon->GPTNeoX, rope_theta->rotary_emb_base
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def test_model_rope_scaling(self):
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config, _ = self.model_tester.prepare_config_and_inputs_for_common()
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hidden_size = config.hidden_size
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num_heads = config.num_attention_heads
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head_dim = hidden_size // num_heads
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scaling_factor = 10
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short_input_length = 10
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long_input_length = int(config.max_position_embeddings * 1.5)
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# Inputs
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x = torch.randn(1, dtype=torch.float32, device=torch_device) # used exlusively to get the dtype and the device
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# Sanity check original RoPE
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original_rope = GPTNeoXRotaryEmbedding(
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head_dim,
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max_position_embeddings=config.max_position_embeddings,
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base=config.rotary_emb_base,
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).to(torch_device)
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original_cos_short, original_sin_short = original_rope(x, short_input_length)
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original_cos_long, original_sin_long = original_rope(x, long_input_length)
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torch.testing.assert_close(original_cos_short, original_cos_long[:short_input_length, :])
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torch.testing.assert_close(original_sin_short, original_sin_long[:short_input_length, :])
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# Sanity check linear RoPE scaling
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# New position "x" should match original position with index "x/scaling_factor"
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linear_scaling_rope = GPTNeoXLinearScalingRotaryEmbedding(
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head_dim,
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max_position_embeddings=config.max_position_embeddings,
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base=config.rotary_emb_base,
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scaling_factor=scaling_factor,
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).to(torch_device)
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linear_cos_short, linear_sin_short = linear_scaling_rope(x, short_input_length)
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linear_cos_long, linear_sin_long = linear_scaling_rope(x, long_input_length)
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torch.testing.assert_close(linear_cos_short, linear_cos_long[:short_input_length, :])
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torch.testing.assert_close(linear_sin_short, linear_sin_long[:short_input_length, :])
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for new_position in range(0, long_input_length, scaling_factor):
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original_position = int(new_position // scaling_factor)
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torch.testing.assert_close(linear_cos_long[new_position, :], original_cos_long[original_position, :])
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torch.testing.assert_close(linear_sin_long[new_position, :], original_sin_long[original_position, :])
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# Sanity check Dynamic NTK RoPE scaling
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# Scaling should only be observed after a long input is fed. We can observe that the frequencies increase
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# with scaling_factor (or that `inv_freq` decreases)
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ntk_scaling_rope = GPTNeoXDynamicNTKScalingRotaryEmbedding(
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head_dim,
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max_position_embeddings=config.max_position_embeddings,
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base=config.rotary_emb_base,
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scaling_factor=scaling_factor,
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).to(torch_device)
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ntk_cos_short, ntk_sin_short = ntk_scaling_rope(x, short_input_length)
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ntk_cos_long, ntk_sin_long = ntk_scaling_rope(x, long_input_length)
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torch.testing.assert_close(ntk_cos_short, original_cos_short)
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torch.testing.assert_close(ntk_sin_short, original_sin_short)
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with self.assertRaises(AssertionError):
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torch.testing.assert_close(ntk_cos_long, original_cos_long)
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with self.assertRaises(AssertionError):
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torch.testing.assert_close(ntk_sin_long, original_sin_long)
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self.assertTrue((ntk_scaling_rope.inv_freq <= original_rope.inv_freq).all())
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@require_torch
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class GPTNeoXLanguageGenerationTest(unittest.TestCase):
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@slow
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def test_lm_generate_gptneox(self):
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tokenizer = AutoTokenizer.from_pretrained("EleutherAI/pythia-410m-deduped")
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for checkpointing in [True, False]:
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model = GPTNeoXForCausalLM.from_pretrained("EleutherAI/pythia-410m-deduped")
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if checkpointing:
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model.gradient_checkpointing_enable()
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else:
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model.gradient_checkpointing_disable()
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model.to(torch_device)
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inputs = tokenizer("My favorite food is", return_tensors="pt").to(torch_device)
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# The hub repo. is updated on 2023-04-04, resulting in poor outputs.
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# See: https://github.com/huggingface/transformers/pull/24193
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expected_output = "My favorite food is a good old-fashioned, old-fashioned, old-fashioned.\n\nI'm not sure"
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output_ids = model.generate(**inputs, do_sample=False, max_new_tokens=20)
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output_str = tokenizer.batch_decode(output_ids)[0]
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self.assertEqual(output_str, expected_output)
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def pythia_integration_test(self):
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model_name_or_path = "EleutherAI/pythia-70m"
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model = GPTNeoXForCausalLM.from_pretrained(model_name_or_path, torch_dtype=torch.float16).to(torch_device)
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EXPECTED_LOGITS = torch.tensor([1069.0000, 228.7500, 1072.0000, 1072.0000, 1069.0000, 1068.0000, 1068.0000, 1071.0000, 1071.0000, 1071.0000, 1073.0000, 1070.0000, 1071.0000, 1075.0000, 1073.0000, 1075.0000, 1074.0000, 1069.0000, 1072.0000, 1071.0000, 1071.0000, 1071.0000, 1070.0000, 1069.0000, 1069.0000, 1069.0000, 1070.0000, 1075.0000, 1073.0000, 1074.0000]) # fmt: skip
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input_ids = [29, 93, 303, 64, 5478, 49651, 10394, 187, 34, 12939, 875]
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# alternative: tokenizer('<|im_start|>system\nA chat between')
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input_ids = torch.as_tensor(input_ids)[None].to(torch_device)
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outputs = model(input_ids)["logits"][:, -1][0, :30]
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self.assertTrue(torch.allclose(EXPECTED_LOGITS, outputs, atol=1e-5))
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