[s2s test] cleanup (#8131)

examples/seq2seq/test_seq2seq_examples_multi_gpu.py

 # as due to their complexity multi-gpu tests could impact other tests, and to aid debug we have those in a separate module.
 
-import logging
 import os
 import sys
-from pathlib import Path
 
-from transformers import is_torch_available
 from transformers.testing_utils import TestCasePlus, execute_subprocess_async, require_torch_multigpu
 
+from .test_seq2seq_examples import CHEAP_ARGS, make_test_data_dir
 from .utils import load_json
 
 
-if is_torch_available():
-    import torch
-
-
-logging.basicConfig(level=logging.DEBUG)
-
-logger = logging.getLogger()
-CUDA_AVAILABLE = torch.cuda.is_available()
-CHEAP_ARGS = {
-    "max_tokens_per_batch": None,
-    "supervise_forward": True,
-    "normalize_hidden": True,
-    "label_smoothing": 0.2,
-    "eval_max_gen_length": None,
-    "eval_beams": 1,
-    "val_metric": "loss",
-    "save_top_k": 1,
-    "adafactor": True,
-    "early_stopping_patience": 2,
-    "logger_name": "default",
-    "length_penalty": 0.5,
-    "cache_dir": "",
-    "task": "summarization",
-    "num_workers": 2,
-    "alpha_hid": 0,
-    "freeze_embeds": True,
-    "enc_only": False,
-    "tgt_suffix": "",
-    "resume_from_checkpoint": None,
-    "sortish_sampler": True,
-    "student_decoder_layers": 1,
-    "val_check_interval": 1.0,
-    "output_dir": "",
-    "fp16": False,  # TODO(SS): set this to CUDA_AVAILABLE if ci installs apex or start using native amp
-    "no_teacher": False,
-    "fp16_opt_level": "O1",
-    "gpus": 1 if CUDA_AVAILABLE else 0,
-    "n_tpu_cores": 0,
-    "max_grad_norm": 1.0,
-    "do_train": True,
-    "do_predict": True,
-    "accumulate_grad_batches": 1,
-    "server_ip": "",
-    "server_port": "",
-    "seed": 42,
-    "model_name_or_path": "sshleifer/bart-tiny-random",
-    "config_name": "",
-    "tokenizer_name": "facebook/bart-large",
-    "do_lower_case": False,
-    "learning_rate": 0.3,
-    "lr_scheduler": "linear",
-    "weight_decay": 0.0,
-    "adam_epsilon": 1e-08,
-    "warmup_steps": 0,
-    "max_epochs": 1,
-    "train_batch_size": 2,
-    "eval_batch_size": 2,
-    "max_source_length": 12,
-    "max_target_length": 12,
-    "val_max_target_length": 12,
-    "test_max_target_length": 12,
-    "fast_dev_run": False,
-    "no_cache": False,
-    "n_train": -1,
-    "n_val": -1,
-    "n_test": -1,
-    "student_encoder_layers": 1,
-    "freeze_encoder": False,
-    "auto_scale_batch_size": False,
-}
-
-
-def _dump_articles(path: Path, articles: list):
-    content = "\n".join(articles)
-    Path(path).open("w").writelines(content)
-
-
-ARTICLES = [" Sam ate lunch today.", "Sams lunch ingredients."]
-SUMMARIES = ["A very interesting story about what I ate for lunch.", "Avocado, celery, turkey, coffee"]
-T5_TINY = "patrickvonplaten/t5-tiny-random"
-BART_TINY = "sshleifer/bart-tiny-random"
-MBART_TINY = "sshleifer/tiny-mbart"
-MARIAN_TINY = "sshleifer/tiny-marian-en-de"
-
-
-stream_handler = logging.StreamHandler(sys.stdout)
-logger.addHandler(stream_handler)
-logging.disable(logging.CRITICAL)  # remove noisy download output from tracebacks
-
-
-def make_test_data_dir(tmp_dir):
-    for split in ["train", "val", "test"]:
-        _dump_articles(os.path.join(tmp_dir, f"{split}.source"), ARTICLES)
-        _dump_articles(os.path.join(tmp_dir, f"{split}.target"), SUMMARIES)
-    return tmp_dir
-
-
 class TestSummarizationDistillerMultiGPU(TestCasePlus):
     @classmethod
     def setUpClass(cls):
-        logging.disable(logging.CRITICAL)  # remove noisy download output from tracebacks
         return cls
 
     @require_torch_multigpu