main.py

   1 #!/usr/bin/env python
   2
   3 # Any copyright is dedicated to the Public Domain.
   4 # https://creativecommons.org/publicdomain/zero/1.0/
   5
   6 # Written by Francois Fleuret <francois@fleuret.org>
   7
   8 import math, sys, argparse, time, tqdm, os, datetime, warnings
   9
  10 import torch, torchvision
  11 from torch import nn
  12 from torch.nn import functional as F
  13
  14 import ffutils
  15
  16 import mygpt
  17 import sky, grids, quiz_machine
  18
  19 # world quizzes vs. culture quizzes
  20
  21 ######################################################################
  22
  23 if torch.cuda.is_available():
  24     device = torch.device("cuda")
  25     torch.backends.cuda.matmul.allow_tf32 = True
  26 else:
  27     device = torch.device("cpu")
  28
  29 ######################################################################
  30
  31 parser = argparse.ArgumentParser(
  32     description="An implementation of GPT with cache.",
  33     formatter_class=argparse.ArgumentDefaultsHelpFormatter,
  34 )
  35
  36 parser.add_argument("--log_filename", type=str, default="train.log")
  37
  38 parser.add_argument("--result_dir", type=str, default=None)
  39
  40 parser.add_argument("--seed", type=int, default=0)
  41
  42 parser.add_argument("--max_percents_of_test_in_train", type=int, default=1)
  43
  44 ########################################
  45
  46 parser.add_argument("--nb_epochs", type=int, default=10000)
  47
  48 parser.add_argument("--batch_size", type=int, default=None)
  49
  50 parser.add_argument("--physical_batch_size", type=int, default=None)
  51
  52 parser.add_argument("--nb_train_samples", type=int, default=None)
  53
  54 parser.add_argument("--nb_test_samples", type=int, default=None)
  55
  56 parser.add_argument("--learning_rate", type=float, default=5e-4)
  57
  58 ########################################
  59
  60 parser.add_argument("--model", type=str, default=None)
  61
  62 parser.add_argument("--dim_model", type=int, default=None)
  63
  64 parser.add_argument("--dim_keys", type=int, default=None)
  65
  66 parser.add_argument("--dim_hidden", type=int, default=None)
  67
  68 parser.add_argument("--nb_heads", type=int, default=None)
  69
  70 parser.add_argument("--nb_blocks", type=int, default=None)
  71
  72 parser.add_argument("--dropout", type=float, default=0.1)
  73
  74 ########################################
  75
  76 parser.add_argument("--deterministic_synthesis", action="store_true", default=False)
  77
  78 parser.add_argument("--problem", type=str, default="grids")
  79
  80 parser.add_argument("--nb_threads", type=int, default=-1)
  81
  82 parser.add_argument("--nb_gpts", type=int, default=5)
  83
  84 parser.add_argument("--min_to_validate", type=int, default=None)
  85
  86 parser.add_argument("--max_to_validate", type=int, default=None)
  87
  88 parser.add_argument("--accuracy_to_make_c_quizzes", type=float, default=0.975)
  89
  90 parser.add_argument("--generation_temperature", type=float, default=2.0)
  91
  92 parser.add_argument("--deterministic_validation", action="store_true", default=False)
  93
  94 parser.add_argument("--bidirectional_validation", action="store_true", default=False)
  95
  96 parser.add_argument("--dirty_debug", action="store_true", default=False)
  97
  98 ######################################################################
  99
 100 parser.add_argument("--sky_height", type=int, default=6)
 101
 102 parser.add_argument("--sky_width", type=int, default=8)
 103
 104 parser.add_argument("--sky_nb_birds", type=int, default=3)
 105
 106 parser.add_argument("--sky_nb_iterations", type=int, default=2)
 107
 108 parser.add_argument("--sky_speed", type=int, default=3)
 109
 110 ######################################################################
 111
 112 args = parser.parse_args()
 113
 114 if args.min_to_validate is None:
 115     args.min_to_validate = args.nb_gpts - 1
 116
 117 if args.max_to_validate is None:
 118     args.max_to_validate = args.nb_gpts - 1
 119
 120 if args.result_dir is None:
 121     args.result_dir = f"results_culture"
 122
 123 ######################################################################
 124
 125 default_args = {
 126     "model": "37M",
 127     "batch_size": 25,
 128     "nb_train_samples": 100000,
 129     "nb_test_samples": 10000,
 130 }
 131
 132 for k, v in default_args.items():
 133     if getattr(args, k) is None:
 134         setattr(args, k, v)
 135
 136 ######################################################################
 137
 138 default_model_args = {
 139     "17K": {
 140         "dim_model": 32,
 141         "dim_keys": 32,
 142         "dim_hidden": 32,
 143         "nb_heads": 2,
 144         "nb_blocks": 2,
 145     },
 146     "4M": {
 147         "dim_model": 256,
 148         "dim_keys": 32,
 149         "dim_hidden": 1024,
 150         "nb_heads": 4,
 151         "nb_blocks": 6,
 152     },
 153     "37M": {
 154         "dim_model": 512,
 155         "dim_keys": 64,
 156         "dim_hidden": 2048,
 157         "nb_heads": 8,
 158         "nb_blocks": 12,
 159     },
 160     "122M": {
 161         "dim_model": 768,
 162         "dim_keys": 64,
 163         "dim_hidden": 2048,
 164         "nb_heads": 8,
 165         "nb_blocks": 24,
 166     },
 167     "352M": {
 168         "dim_model": 1024,
 169         "dim_keys": 64,
 170         "dim_hidden": 2048,
 171         "nb_heads": 8,
 172         "nb_blocks": 48,
 173     },
 174 }
 175
 176 if args.model in default_model_args:
 177     for k, v in default_model_args[args.model].items():
 178         if getattr(args, k) is None:
 179             setattr(args, k, v)
 180 else:
 181     raise ValueError(f"Unknown model {args.model}")
 182
 183 ######################################################################
 184
 185 try:
 186     os.mkdir(args.result_dir)
 187 except FileExistsError:
 188     print(f"result directory {args.result_dir} already exists")
 189     exit(1)
 190
 191 log_file = open(os.path.join(args.result_dir, args.log_filename), "a")
 192
 193 if args.seed >= 0:
 194     # torch.backends.cudnn.deterministic = True
 195     # torch.backends.cudnn.benchmark = False
 196     # torch.use_deterministic_algorithms(True)
 197     torch.manual_seed(args.seed)
 198     if torch.cuda.is_available():
 199         torch.cuda.manual_seed_all(args.seed)
 200
 201 ######################################################################
 202
 203
 204 def log_string(s):
 205     t = time.strftime("%Y%m%d-%H:%M:%S ", time.localtime())
 206
 207     if log_file is not None:
 208         log_file.write(t + s + "\n")
 209         log_file.flush()
 210
 211     print(t + s)
 212     sys.stdout.flush()
 213
 214
 215 log_string(f"argv {' '.join(sys.argv)}")
 216
 217 for n in vars(args):
 218     log_string(f"args.{n} {getattr(args, n)}")
 219
 220
 221 ######################################################################
 222
 223 if args.dirty_debug:
 224     args.nb_train_samples = 2500
 225     args.nb_test_samples = 100
 226
 227 if args.physical_batch_size is None:
 228     args.physical_batch_size = args.batch_size
 229 else:
 230     assert args.batch_size % args.physical_batch_size == 0
 231
 232 assert args.nb_train_samples % args.batch_size == 0
 233 assert args.nb_test_samples % args.batch_size == 0
 234
 235 if args.problem == "sky":
 236     problem = sky.Sky(
 237         height=args.sky_height,
 238         width=args.sky_width,
 239         nb_birds=args.sky_nb_birds,
 240         nb_iterations=args.sky_nb_iterations,
 241         speed=args.sky_speed,
 242         max_nb_cached_chunks=args.nb_train_samples // 100,
 243         chunk_size=100,
 244         nb_threads=args.nb_threads,
 245     )
 246     back_accuracy = False
 247 elif args.problem == "grids":
 248     problem = grids.Grids(
 249         max_nb_cached_chunks=args.nb_train_samples // 100,
 250         chunk_size=100,
 251         nb_threads=args.nb_threads,
 252     )
 253     back_accuracy = True
 254 else:
 255     raise ValueError
 256
 257 quiz_machine = quiz_machine.QuizMachine(
 258     problem=problem,
 259     nb_train_samples=args.nb_train_samples,
 260     nb_test_samples=args.nb_test_samples,
 261     back_accuracy=back_accuracy,
 262     batch_size=args.physical_batch_size,
 263     result_dir=args.result_dir,
 264     logger=log_string,
 265     device=device,
 266 )
 267
 268 ######################################################################
 269
 270 log_string(f"device {device}")
 271
 272 vocabulary_size = quiz_machine.vocabulary_size()
 273
 274 log_string(f"vocabulary_size {vocabulary_size}")
 275
 276 ######################################################################
 277
 278 # Compute the entropy of the training tokens
 279
 280 token_count = 0
 281 for input in quiz_machine.batches(split="train", desc="train-entropy"):
 282     token_count += F.one_hot(input, num_classes=quiz_machine.vocabulary_size()).sum(
 283         (0, 1)
 284     )
 285 token_probas = token_count / token_count.sum()
 286 entropy = -torch.xlogy(token_probas, token_probas).sum()
 287 train_set_perplexity = math.exp(entropy)
 288
 289 ######################################################################
 290 # A bit of paranoia never hurts
 291
 292 if args.max_percents_of_test_in_train >= 0:
 293
 294     def subsets_as_tuples(batches, cs):
 295         s = set()
 296         for batch in batches:
 297             for x in batch:
 298                 s.add(tuple([v.item() for v in x]))
 299                 if len(s) == cs:
 300                     yield s
 301                     s = set()
 302         yield s
 303
 304     nb_test, nb_in_train = 0, 0
 305     for test_subset in subsets_as_tuples(
 306         quiz_machine.batches(split="test", desc="test-check"), 25000
 307     ):
 308         in_train = set()
 309         for train_subset in subsets_as_tuples(
 310             quiz_machine.batches(split="train", desc="train-check"), 25000
 311         ):
 312             in_train.update(test_subset.intersection(train_subset))
 313         nb_in_train += len(in_train)
 314         nb_test += len(test_subset)
 315
 316     log_string(
 317         f"data_check {nb_in_train*100/nb_test:.02f}% ({nb_in_train}/{nb_test}) of test samples are in the train set"
 318     )
 319
 320     assert (
 321         nb_in_train <= args.max_percents_of_test_in_train * nb_test / 100
 322     ), f"More than {args.max_percents_of_test_in_train}% of test samples are in the train set"
 323
 324 ##############################
 325
 326
 327 def one_epoch(model, quiz_machine):
 328     optimizer = torch.optim.Adam(model.parameters(), lr=args.learning_rate)
 329
 330     model.train()
 331
 332     nb_train_samples, acc_train_loss = 0, 0.0
 333
 334     for input in quiz_machine.batches(split="train"):
 335         input = input.to(device)
 336
 337         if nb_train_samples % args.batch_size == 0:
 338             optimizer.zero_grad()
 339
 340         output = model(mygpt.BracketedSequence(input)).x
 341         loss = F.cross_entropy(output.transpose(1, 2), input)
 342         acc_train_loss += loss.item() * input.size(0)
 343
 344         nb_train_samples += input.size(0)
 345
 346         loss.backward()
 347
 348         if nb_train_samples % args.batch_size == 0:
 349             optimizer.step()
 350
 351     train_perplexity = math.exp(min(100, acc_train_loss / nb_train_samples))
 352
 353     log_string(f"train_perplexity {n_epoch} {train_perplexity}")
 354
 355
 356 ######################################################################
 357
 358
 359 def run_tests(model, quiz_machine, deterministic_synthesis):
 360     with torch.autograd.no_grad():
 361         model.eval()
 362
 363         nb_test_samples, acc_test_loss = 0, 0.0
 364         nb_samples_accumulated = 0
 365
 366         for input in quiz_machine.batches(split="test"):
 367             input = input.to(device)
 368
 369             bs = model(mygpt.BracketedSequence(input))
 370             output = bs.x
 371
 372             loss = F.cross_entropy(output.transpose(1, 2), input)
 373
 374             acc_test_loss += loss.item() * input.size(0)
 375
 376             nb_test_samples += input.size(0)
 377
 378         test_perplexity = math.exp(min(100, acc_test_loss / nb_test_samples))
 379
 380         log_string(f"test_perplexity {n_epoch} {test_perplexity}")
 381
 382         model.main_test_accuracy = quiz_machine.produce_results(
 383             n_epoch=n_epoch,
 384             model=model,
 385             result_dir=args.result_dir,
 386             deterministic_synthesis=deterministic_synthesis,
 387         )
 388
 389
 390 ######################################################################
 391
 392
 393 def standard_validity(logproba):
 394     l = logproba.sort(dim=-1).values
 395     return (l[:, 0] < math.log(0.5)) & (l[:, 1] > math.log(0.95))
 396
 397
 398 def valid_c_quizzes(recorded, criteria):
 399     result = [q[criteria(lp)] for q, lp in recorded]
 400     return torch.cat(result, dim=0) if len(result) > 0 else torch.tensor([])
 401
 402
 403 ######################################################################
 404
 405
 406 def create_c_quizzes(
 407     models,
 408     quiz_machine,
 409     nb_for_train=1000,
 410     nb_for_test=100,
 411 ):
 412     quizzes_and_logproba_records = []
 413
 414     nb_to_create = nb_for_train + nb_for_test
 415
 416     # ------------------------------------------------------------
 417
 418     file_name = os.path.join(args.result_dir, f"culture_c_quiz_{n_epoch:04d}_logp.dat")
 419
 420     with open(file_name, "w") as logp_file:
 421         while (
 422             valid_c_quizzes(quizzes_and_logproba_records, standard_validity).size(0)
 423             < nb_to_create
 424         ):
 425             # Select a model at random to generate the new quizzes
 426
 427             model_for_generation = models[torch.randint(len(models), (1,))]
 428
 429             c_quizzes = quiz_machine.generate_quizzes(
 430                 nb_to_create,
 431                 model_for_generation=model_for_generation,
 432                 temperature=args.generation_temperature,
 433             )
 434
 435             c_quizzes = c_quizzes[quiz_machine.non_trivial(c_quizzes)]
 436
 437             if c_quizzes.size(0) > 0:
 438                 logproba = quiz_machine.logproba_solution(models, c_quizzes)
 439                 for l in logproba:
 440                     s = " ".join([str(x.item()) for x in l])
 441                     logp_file.write(s + "\n")
 442                 quizzes_and_logproba_records.append((c_quizzes, logproba))
 443
 444             nb_validated = valid_c_quizzes(
 445                 quizzes_and_logproba_records, standard_validity
 446             ).size(0)
 447
 448             log_string(
 449                 f"keep c_quizzes model {model_for_generation.id} nb_accumulated {nb_validated} / {nb_to_create}"
 450             )
 451
 452     # store the new c_quizzes which have been validated
 453
 454     new_c_quizzes = valid_c_quizzes(quizzes_and_logproba_records, standard_validity)
 455
 456     quiz_machine.reverse_random_half_in_place(new_c_quizzes)
 457
 458     quiz_machine.store_c_quizzes(new_c_quizzes[:nb_for_train], for_train=True)
 459     quiz_machine.store_c_quizzes(new_c_quizzes[nb_for_train:], for_train=False)
 460
 461     # save a bunch of images to investigate what quizzes with a
 462     # certain nb of correct predictions look like
 463
 464     q = new_c_quizzes[:72]
 465
 466     if q.size(0) > 0:
 467         quiz_machine.save_quizzes(args.result_dir, f"culture_c_quiz_{n_epoch:04d}", q)
 468
 469
 470 ######################################################################
 471
 472
 473 def create_c_quizzes_(
 474     models,
 475     quiz_machine,
 476     nb_for_train=1000,
 477     nb_for_test=100,
 478 ):
 479     quizzes_and_nb_correct_records = []
 480
 481     nb_to_create = nb_for_train + nb_for_test
 482
 483     # ------------------------------------------------------------
 484
 485     standard_validity = lambda nb_correct: torch.logical_and(
 486         nb_correct >= args.min_to_validate, nb_correct <= args.max_to_validate
 487     )
 488
 489     file_name = os.path.join(args.result_dir, f"culture_c_quiz_{n_epoch:04d}_logp.dat")
 490
 491     with open(file_name, "w") as logp_file:
 492         while (
 493             valid_c_quizzes(quizzes_and_nb_correct_records, standard_validity).size(0)
 494             < nb_to_create
 495         ):
 496             # Select a model at random to generate the new quizzes
 497
 498             model_for_generation = models[torch.randint(len(models), (1,))]
 499
 500             c_quizzes = quiz_machine.generate_quizzes(
 501                 nb_to_create,
 502                 model_for_generation=model_for_generation,
 503                 temperature=args.generation_temperature,
 504             )
 505
 506             # if args.prediction_correctness:
 507
 508             # else:
 509             # logproba = quiz_machine.new(quiz_machine.size(0), len(models))
 510             # for q,l in zip(quizzes.split(args.batch_size), logits.split(args.batch_size)):
 511             # for model in models:
 512             # l[...] = F.cross_entropy(model(q))
 513
 514             c_quizzes = c_quizzes[quiz_machine.non_trivial(c_quizzes)]
 515
 516             if c_quizzes.size(0) > 0:
 517                 nb_correct, seq_logproba = quiz_machine.compute_correctness(
 518                     c_quizzes,
 519                     models,
 520                     bidirectional_validation=args.bidirectional_validation,
 521                     deterministic_validation=args.deterministic_validation,
 522                 )
 523
 524                 for n, l in zip(nb_correct, seq_logproba):
 525                     s = " ".join([str(x.item()) for x in l])
 526                     logp_file.write(f"{n} {s}\n")
 527
 528                 if args.dirty_debug:
 529                     nb_correct = torch.randint(
 530                         len(models) + 1, nb_correct.size(), device=c_quizzes.device
 531                     )
 532
 533                 quizzes_and_nb_correct_records.append((c_quizzes, nb_correct))
 534
 535             nv = F.one_hot(nb_correct, num_classes=len(models) + 1).sum(0)
 536             nv = " ".join([str(x.item()) for x in nv])
 537
 538             nb_validated = valid_c_quizzes(
 539                 quizzes_and_nb_correct_records, standard_validity
 540             ).size(0)
 541
 542             log_string(
 543                 f"keep c_quizzes model {model_for_generation.id} kept {nv} nb_accumulated {nb_validated} / {nb_to_create}"
 544             )
 545
 546     # store the new c_quizzes which have been validated
 547
 548     new_c_quizzes = valid_c_quizzes(quizzes_and_nb_correct_records, standard_validity)
 549
 550     quiz_machine.reverse_random_half_in_place(new_c_quizzes)
 551
 552     quiz_machine.store_c_quizzes(new_c_quizzes[:nb_for_train], for_train=True)
 553     quiz_machine.store_c_quizzes(new_c_quizzes[nb_for_train:], for_train=False)
 554
 555     # save a bunch of images to investigate what quizzes with a
 556     # certain nb of correct predictions look like
 557
 558     for n in range(len(models) + 1):
 559         s = (
 560             "_validated"
 561             if n >= args.min_to_validate and n <= args.max_to_validate
 562             else ""
 563         )
 564
 565         q = valid_c_quizzes(
 566             quizzes_and_nb_correct_records, criteria=lambda nb_correct: nb_correct == n
 567         )[:72]
 568
 569         quiz_machine.reverse_random_half_in_place(q)
 570
 571         if q.size(0) > 0:
 572             quiz_machine.save_quizzes(
 573                 args.result_dir, f"culture_c_quiz_{n_epoch:04d}_N{n}{s}", q
 574             )
 575
 576
 577 ######################################################################
 578
 579 models = []
 580
 581 for k in range(args.nb_gpts):
 582     model = mygpt.MyGPT(
 583         vocabulary_size=vocabulary_size,
 584         dim_model=args.dim_model,
 585         dim_keys=args.dim_keys,
 586         dim_hidden=args.dim_hidden,
 587         nb_heads=args.nb_heads,
 588         nb_blocks=args.nb_blocks,
 589         causal=True,
 590         dropout=args.dropout,
 591     ).to(device)
 592
 593     model.main_test_accuracy = 0.0
 594     model.id = k
 595
 596     models.append(model)
 597
 598
 599 nb_parameters = sum(p.numel() for p in models[0].parameters())
 600 log_string(f"nb_parameters {nb_parameters} ({int(nb_parameters/1e6)}M)")
 601
 602 ######################################################################
 603
 604 nb_new_c_quizzes_for_train = args.nb_train_samples // 50
 605 nb_new_c_quizzes_for_test = args.nb_test_samples // 50
 606
 607 log_string(
 608     f"nb_new_c_quizzes_for_train {nb_new_c_quizzes_for_train} nb_new_c_quizzes_for_test {nb_new_c_quizzes_for_test}"
 609 )
 610
 611 ######################################################################
 612
 613 if args.dirty_debug:
 614     args.accuracy_to_make_c_quizzes = 0.0
 615     args.nb_gpts = 2
 616     nb_new_c_quizzes_for_train = 100
 617     nb_new_c_quizzes_for_test = 10
 618
 619 ######################################################################
 620
 621 for n_epoch in range(args.nb_epochs):
 622     log_string(f"--- epoch {n_epoch} ----------------------------------------")
 623
 624     cta = " ".join([f"{float(m.main_test_accuracy):.04f}" for m in models])
 625     log_string(f"current_test_accuracies {cta}")
 626
 627     ##################################################
 628     # Select, improve, and eval the worst model
 629
 630     weakest_model = min(models, key=lambda m: float(m.main_test_accuracy))
 631
 632     log_string(
 633         f"training model {weakest_model.id} main_test_accuracy {weakest_model.main_test_accuracy}"
 634     )
 635
 636     one_epoch(weakest_model, quiz_machine)
 637
 638     log_string(
 639         f"train_set_composition w_quizzes {quiz_machine.nb_batch_w_quizzes} c_quizzes {quiz_machine.nb_batch_c_quizzes}"
 640     )
 641
 642     run_tests(weakest_model, quiz_machine, deterministic_synthesis=False)
 643
 644     log_string(
 645         f"test_set_composition w_quizzes {quiz_machine.nb_batch_w_quizzes} c_quizzes {quiz_machine.nb_batch_c_quizzes}"
 646     )
 647
 648     ##################################################
 649     # Replace a fraction of the w_quizzes with fresh ones
 650
 651     log_string(
 652         f"cache_w_quizzes contains {quiz_machine.problem.nb_cached_quizzes()} quizzes"
 653     )
 654     quiz_machine.renew_w_quizzes(args.nb_train_samples // args.nb_gpts)
 655
 656     ##################################################
 657     # If all the models are good enough, generate new quizzes and
 658     # re-compute the test errors
 659
 660     if min([m.main_test_accuracy for m in models]) >= args.accuracy_to_make_c_quizzes:
 661         create_c_quizzes(
 662             models,
 663             quiz_machine,
 664             nb_for_train=nb_new_c_quizzes_for_train,
 665             nb_for_test=nb_new_c_quizzes_for_test,
 666         )
 667
 668         for model in models:
 669             run_tests(model, quiz_machine, deterministic_synthesis=False)
 670
 671
 672 ######################################################################