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# The MIT License (MIT)
# See license file or visit https://github.com/POSTECH-CVLab/PyTorch-StudioGAN for details
# src/loader.py
from os.path import dirname, abspath, exists, join
import sys
import glob
import json
import os
import random
import warnings
from torch.backends import cudnn
from torch.utils.data import DataLoader
from torch.nn import DataParallel
from torch.nn.parallel import DistributedDataParallel as DDP
from torch.utils.data.distributed import DistributedSampler
import torch
import torch.distributed as dist
import wandb
from data_util import Dataset_
from utils.style_ops import grid_sample_gradfix
from utils.style_ops import conv2d_gradfix
from metrics.inception_net import InceptionV3
from sync_batchnorm.batchnorm import convert_model
from worker import WORKER
import utils.log as log
import utils.losses as losses
import utils.ckpt as ckpt
import utils.misc as misc
import utils.custom_ops as custom_ops
import models.model as model
import metrics.preparation as pp
def load_worker(local_rank, cfgs, gpus_per_node, run_name, hdf5_path):
# -----------------------------------------------------------------------------
# define default variables for loading ckpt or evaluating the trained GAN model.
# -----------------------------------------------------------------------------
load_train_dataset = cfgs.RUN.train + cfgs.RUN.GAN_train + cfgs.RUN.GAN_test
len_eval_metrics = 0 if cfgs.RUN.eval_metrics == ["none"] else len(cfgs.RUN.eval_metrics)
load_eval_dataset = len_eval_metrics + cfgs.RUN.save_real_images + cfgs.RUN.k_nearest_neighbor + \
cfgs.RUN.frequency_analysis + cfgs.RUN.tsne_analysis + cfgs.RUN.intra_class_fid
train_sampler, eval_sampler = None, None
step, epoch, topk, best_step, best_fid, best_ckpt_path, lecam_emas, is_best = \
0, 0, cfgs.OPTIMIZATION.batch_size, 0, None, None, None, False
mu, sigma, real_feats, eval_model, num_rows, num_cols = None, None, None, None, 10, 8
aa_p = cfgs.AUG.ada_initial_augment_p
if cfgs.AUG.ada_initial_augment_p != "N/A":
aa_p = cfgs.AUG.ada_initial_augment_p
else:
aa_p = cfgs.AUG.apa_initial_augment_p
loss_list_dict = {"gen_loss": [], "dis_loss": [], "cls_loss": []}
num_eval = {}
metric_dict_during_train = {}
if "none" in cfgs.RUN.eval_metrics:
cfgs.RUN.eval_metrics = []
if "is" in cfgs.RUN.eval_metrics:
metric_dict_during_train.update({"IS": [], "Top1_acc": [], "Top5_acc": []})
if "fid" in cfgs.RUN.eval_metrics:
metric_dict_during_train.update({"FID": []})
if "prdc" in cfgs.RUN.eval_metrics:
metric_dict_during_train.update({"Improved_Precision": [], "Improved_Recall": [], "Density":[], "Coverage": []})
# -----------------------------------------------------------------------------
# determine cuda, cudnn, and backends settings.
# -----------------------------------------------------------------------------
if cfgs.RUN.fix_seed:
cudnn.benchmark, cudnn.deterministic = False, True
else:
cudnn.benchmark, cudnn.deterministic = True, False
if cfgs.MODEL.backbone in ["stylegan2", "stylegan3"]:
# Improves training speed
conv2d_gradfix.enabled = True
# Avoids errors with the augmentation pipe
grid_sample_gradfix.enabled = True
if cfgs.RUN.mixed_precision:
# Allow PyTorch to internally use tf32 for matmul
torch.backends.cuda.matmul.allow_tf32 = False
# Allow PyTorch to internally use tf32 for convolutions
torch.backends.cudnn.allow_tf32 = False
# -----------------------------------------------------------------------------
# initialize all processes and fix seed of each process
# -----------------------------------------------------------------------------
if cfgs.RUN.distributed_data_parallel:
global_rank = cfgs.RUN.current_node * (gpus_per_node) + local_rank
print("Use GPU: {global_rank} for training.".format(global_rank=global_rank))
misc.setup(global_rank, cfgs.OPTIMIZATION.world_size, cfgs.RUN.backend)
torch.cuda.set_device(local_rank)
else:
global_rank = local_rank
misc.fix_seed(cfgs.RUN.seed + global_rank)
# -----------------------------------------------------------------------------
# Intialize python logger.
# -----------------------------------------------------------------------------
if local_rank == 0:
logger = log.make_logger(cfgs.RUN.save_dir, run_name, None)
if cfgs.RUN.ckpt_dir is not None and cfgs.RUN.freezeD == -1:
folder_hier = cfgs.RUN.ckpt_dir.split("/")
if folder_hier[-1] == "":
folder_hier.pop()
logger.info("Run name : {run_name}".format(run_name=folder_hier.pop()))
else:
logger.info("Run name : {run_name}".format(run_name=run_name))
for k, v in cfgs.super_cfgs.items():
logger.info("cfgs." + k + " =")
logger.info(json.dumps(vars(v), indent=2))
else:
logger = None
# -----------------------------------------------------------------------------
# load train and evaluation datasets.
# -----------------------------------------------------------------------------
if load_train_dataset:
if local_rank == 0:
logger.info("Load {name} train dataset for training.".format(name=cfgs.DATA.name))
train_dataset = Dataset_(data_name=cfgs.DATA.name,
data_dir=cfgs.RUN.data_dir,
train=True,
crop_long_edge=cfgs.PRE.crop_long_edge,
resize_size=cfgs.PRE.resize_size,
resizer=None if hdf5_path is not None else cfgs.RUN.pre_resizer,
random_flip=cfgs.PRE.apply_rflip,
normalize=True,
hdf5_path=hdf5_path,
load_data_in_memory=cfgs.RUN.load_data_in_memory)
if local_rank == 0:
logger.info("Train dataset size: {dataset_size}".format(dataset_size=len(train_dataset)))
else:
train_dataset = None
if load_eval_dataset:
if local_rank == 0:
logger.info("Load {name} {ref} dataset for evaluation.".format(name=cfgs.DATA.name, ref=cfgs.RUN.ref_dataset))
eval_dataset = Dataset_(data_name=cfgs.DATA.name,
data_dir=cfgs.RUN.data_dir,
train=True if cfgs.RUN.ref_dataset == "train" else False,
crop_long_edge=False if cfgs.DATA.name in cfgs.MISC.no_proc_data else True,
resize_size=None if cfgs.DATA.name in cfgs.MISC.no_proc_data else cfgs.DATA.img_size,
resizer=cfgs.RUN.pre_resizer,
random_flip=False,
hdf5_path=None,
normalize=True,
load_data_in_memory=False)
if local_rank == 0:
logger.info("Eval dataset size: {dataset_size}".format(dataset_size=len(eval_dataset)))
else:
eval_dataset = None
# -----------------------------------------------------------------------------
# define a distributed sampler for DDP train and evaluation.
# -----------------------------------------------------------------------------
if cfgs.RUN.distributed_data_parallel:
cfgs.OPTIMIZATION.batch_size = cfgs.OPTIMIZATION.batch_size//cfgs.OPTIMIZATION.world_size
if cfgs.RUN.train:
train_sampler = DistributedSampler(train_dataset,
num_replicas=cfgs.OPTIMIZATION.world_size,
rank=local_rank,
shuffle=True,
drop_last=True)
topk = cfgs.OPTIMIZATION.batch_size
if load_eval_dataset:
eval_sampler = DistributedSampler(eval_dataset,
num_replicas=cfgs.OPTIMIZATION.world_size,
rank=local_rank,
shuffle=False,
drop_last=False)
cfgs.OPTIMIZATION.basket_size = cfgs.OPTIMIZATION.batch_size*\
cfgs.OPTIMIZATION.acml_steps*\
cfgs.OPTIMIZATION.d_updates_per_step
# -----------------------------------------------------------------------------
# define dataloaders for train and evaluation.
# -----------------------------------------------------------------------------
if load_train_dataset:
train_dataloader = DataLoader(dataset=train_dataset,
batch_size=cfgs.OPTIMIZATION.basket_size,
shuffle=(train_sampler is None),
pin_memory=True,
num_workers=cfgs.RUN.num_workers,
sampler=train_sampler,
drop_last=True,
persistent_workers=True)
else:
train_dataloader = None
if load_eval_dataset:
eval_dataloader = DataLoader(dataset=eval_dataset,
batch_size=cfgs.OPTIMIZATION.batch_size,
shuffle=False,
pin_memory=True,
num_workers=cfgs.RUN.num_workers,
sampler=eval_sampler,
drop_last=False)
else:
eval_dataloader = None
# -----------------------------------------------------------------------------
# load a generator and a discriminator
# if cfgs.MODEL.apply_g_ema is True, load an exponential moving average generator (Gen_ema).
# -----------------------------------------------------------------------------
Gen, Gen_mapping, Gen_synthesis, Dis, Gen_ema, Gen_ema_mapping, Gen_ema_synthesis, ema =\
model.load_generator_discriminator(DATA=cfgs.DATA,
OPTIMIZATION=cfgs.OPTIMIZATION,
MODEL=cfgs.MODEL,
STYLEGAN=cfgs.STYLEGAN,
MODULES=cfgs.MODULES,
RUN=cfgs.RUN,
device=local_rank,
logger=logger)
if local_rank == 0 and cfgs.RUN.train and Gen_mapping is not None and Gen_synthesis is not None:
def _count_params(module):
return sum(p.numel() for p in module.parameters())
n_gen = _count_params(Gen)
n_map = _count_params(Gen_mapping)
n_syn = _count_params(Gen_synthesis)
n_dis = _count_params(Dis)
map_depth = getattr(cfgs.STYLEGAN, "mapping_network", "N/A")
msg = (
"[param_count] mapping_layers={map_depth} | "
"Generator_total={ng:,} (mapping={nm:,}, synthesis={ns:,}) | "
"Discriminator={nd:,}"
).format(
map_depth=map_depth, ng=n_gen, nm=n_map, ns=n_syn, nd=n_dis)
logger.info(msg)
print(msg, flush=True)
try:
stats = {
"mapping_network_num_layers": map_depth,
"generator_total_params": n_gen,
"generator_mapping_params": n_map,
"generator_synthesis_params": n_syn,
"discriminator_params": n_dis,
}
with open(join(cfgs.RUN.save_dir, "model_param_counts.json"), "w", encoding="utf-8") as f:
json.dump(stats, f, indent=2)
except Exception as e:
logger.info(f"[param_count] could not write model_param_counts.json: {e}")
if local_rank != 0:
custom_ops.verbosity = "none"
# -----------------------------------------------------------------------------
# define optimizers for adversarial training
# -----------------------------------------------------------------------------
cfgs.define_optimizer(Gen, Dis)
# -----------------------------------------------------------------------------
# load the generator and the discriminator from a checkpoint if possible
# -----------------------------------------------------------------------------
if cfgs.RUN.ckpt_dir is not None:
if local_rank == 0:
os.remove(join(cfgs.RUN.save_dir, "logs", run_name + ".log"))
run_name, step, epoch, topk, aa_p, best_step, best_fid, best_ckpt_path, lecam_emas, logger =\
ckpt.load_StudioGAN_ckpts(ckpt_dir=cfgs.RUN.ckpt_dir,
load_best=cfgs.RUN.load_best,
Gen=Gen,
Dis=Dis,
g_optimizer=cfgs.OPTIMIZATION.g_optimizer,
d_optimizer=cfgs.OPTIMIZATION.d_optimizer,
run_name=run_name,
apply_g_ema=cfgs.MODEL.apply_g_ema,
Gen_ema=Gen_ema,
ema=ema,
is_train=cfgs.RUN.train,
RUN=cfgs.RUN,
logger=logger,
global_rank=global_rank,
device=local_rank,
cfg_file=cfgs.RUN.cfg_file)
if topk == "initialize":
topk == cfgs.OPTIMIZATION.batch_size
if cfgs.MODEL.backbone in ["stylegan2", "stylegan3"]:
ema.ema_rampup = "N/A" # disable EMA rampup
if cfgs.MODEL.backbone == "stylegan3" and cfgs.STYLEGAN.stylegan3_cfg == "stylegan3-r":
cfgs.STYLEGAN.blur_init_sigma = "N/A" # disable blur rampup
if cfgs.AUG.apply_ada:
cfgs.AUG.ada_kimg = 100 # make ADA react faster at the beginning
if cfgs.RUN.ckpt_dir is None or cfgs.RUN.freezeD != -1:
if local_rank == 0:
cfgs.RUN.ckpt_dir = ckpt.make_ckpt_dir(join(cfgs.RUN.save_dir, "checkpoints", run_name))
dict_dir = join(cfgs.RUN.save_dir, "statistics", run_name)
loss_list_dict = misc.load_log_dicts(directory=dict_dir, file_name="losses.npy", ph=loss_list_dict)
metric_dict_during_train = misc.load_log_dicts(directory=dict_dir, file_name="metrics.npy", ph=metric_dict_during_train)
# -----------------------------------------------------------------------------
# prepare parallel training
# -----------------------------------------------------------------------------
if cfgs.OPTIMIZATION.world_size > 1:
Gen, Gen_mapping, Gen_synthesis, Dis, Gen_ema, Gen_ema_mapping, Gen_ema_synthesis =\
model.prepare_parallel_training(Gen=Gen,
Gen_mapping=Gen_mapping,
Gen_synthesis=Gen_synthesis,
Dis=Dis,
Gen_ema=Gen_ema,
Gen_ema_mapping=Gen_ema_mapping,
Gen_ema_synthesis=Gen_ema_synthesis,
MODEL=cfgs.MODEL,
world_size=cfgs.OPTIMIZATION.world_size,
distributed_data_parallel=cfgs.RUN.distributed_data_parallel,
synchronized_bn=cfgs.RUN.synchronized_bn,
apply_g_ema=cfgs.MODEL.apply_g_ema,
device=local_rank,
STYLEGAN=cfgs.STYLEGAN)
# -----------------------------------------------------------------------------
# load a pre-trained network (InceptionV3, SwAV, DINO, or Swin-T)
# -----------------------------------------------------------------------------
if cfgs.DATA.name in ["ImageNet", "Baby_ImageNet", "Papa_ImageNet", "Grandpa_ImageNet"]:
num_eval = {"train": 50000, "valid": len(eval_dataloader.dataset)}
else:
if eval_dataloader is not None:
num_eval[cfgs.RUN.ref_dataset] = len(eval_dataloader.dataset)
else:
num_eval["train"], num_eval["valid"], num_eval["test"] = 50000, 50000, 50000
if len(cfgs.RUN.eval_metrics) or cfgs.RUN.intra_class_fid:
eval_model = pp.LoadEvalModel(eval_backbone=cfgs.RUN.eval_backbone,
post_resizer=cfgs.RUN.post_resizer,
world_size=cfgs.OPTIMIZATION.world_size,
distributed_data_parallel=cfgs.RUN.distributed_data_parallel,
device=local_rank)
if "fid" in cfgs.RUN.eval_metrics:
mu, sigma = pp.prepare_moments(data_loader=eval_dataloader,
eval_model=eval_model,
quantize=True,
cfgs=cfgs,
logger=logger,
device=local_rank)
if "prdc" in cfgs.RUN.eval_metrics:
if cfgs.RUN.distributed_data_parallel:
prdc_sampler = DistributedSampler(eval_dataset,
num_replicas=cfgs.OPTIMIZATION.world_size,
rank=local_rank,
shuffle=True,
drop_last=False)
else:
prdc_sampler = None
prdc_dataloader = DataLoader(dataset=eval_dataset,
batch_size=cfgs.OPTIMIZATION.batch_size,
shuffle=(prdc_sampler is None),
pin_memory=True,
num_workers=cfgs.RUN.num_workers,
sampler=prdc_sampler,
drop_last=False)
real_feats = pp.prepare_real_feats(data_loader=prdc_dataloader,
eval_model=eval_model,
num_feats=num_eval[cfgs.RUN.ref_dataset],
quantize=True,
cfgs=cfgs,
logger=logger,
device=local_rank)
if cfgs.RUN.calc_is_ref_dataset:
pp.calculate_ins(data_loader=eval_dataloader,
eval_model=eval_model,
quantize=True,
splits=1,
cfgs=cfgs,
logger=logger,
device=local_rank)
# -----------------------------------------------------------------------------
# initialize WORKER for training and evaluating GAN
# -----------------------------------------------------------------------------
worker = WORKER(
cfgs=cfgs,
run_name=run_name,
Gen=Gen,
Gen_mapping=Gen_mapping,
Gen_synthesis=Gen_synthesis,
Dis=Dis,
Gen_ema=Gen_ema,
Gen_ema_mapping=Gen_ema_mapping,
Gen_ema_synthesis=Gen_ema_synthesis,
ema=ema,
eval_model=eval_model,
train_dataloader=train_dataloader,
eval_dataloader=eval_dataloader,
global_rank=global_rank,
local_rank=local_rank,
mu=mu,
sigma=sigma,
real_feats=real_feats,
logger=logger,
aa_p=aa_p,
best_step=best_step,
best_fid=best_fid,
best_ckpt_path=best_ckpt_path,
lecam_emas=lecam_emas,
num_eval=num_eval,
loss_list_dict=loss_list_dict,
metric_dict_during_train=metric_dict_during_train,
)
# -----------------------------------------------------------------------------
# train GAN until "total_steps" generator updates
# -----------------------------------------------------------------------------
if cfgs.RUN.train:
if global_rank == 0:
logger.info("Start training!")
worker.training, worker.topk = True, topk
worker.prepare_train_iter(epoch_counter=epoch)
while step <= cfgs.OPTIMIZATION.total_steps:
if cfgs.OPTIMIZATION.d_first:
real_cond_loss, dis_acml_loss = worker.train_discriminator(current_step=step)
gen_acml_loss = worker.train_generator(current_step=step)
else:
gen_acml_loss = worker.train_generator(current_step=step)
real_cond_loss, dis_acml_loss = worker.train_discriminator(current_step=step)
if global_rank == 0 and (step + 1) % cfgs.RUN.print_freq == 0:
worker.log_train_statistics(current_step=step,
real_cond_loss=real_cond_loss,
gen_acml_loss=gen_acml_loss,
dis_acml_loss=dis_acml_loss)
step += 1
if cfgs.LOSS.apply_topk:
if (epoch + 1) == worker.epoch_counter:
epoch += 1
worker.topk = losses.adjust_k(current_k=worker.topk,
topk_gamma=cfgs.LOSS.topk_gamma,
inf_k=int(cfgs.OPTIMIZATION.batch_size * cfgs.LOSS.topk_nu))
if step % cfgs.RUN.save_freq == 0:
# visuailize fake images
if global_rank == 0:
worker.visualize_fake_images(num_cols=num_cols, current_step=step)
# evaluate GAN for monitoring purpose
if len(cfgs.RUN.eval_metrics) :
is_best = worker.evaluate(step=step, metrics=cfgs.RUN.eval_metrics, writing=True, training=True)
# save GAN in "./checkpoints/RUN_NAME/*"
if global_rank == 0:
worker.save(step=step, is_best=is_best)
# stop processes until all processes arrive
if cfgs.RUN.distributed_data_parallel:
dist.barrier(worker.group)
if global_rank == 0:
logger.info("End of training!")
# -----------------------------------------------------------------------------
# re-evaluate the best GAN and conduct ordered analyses
# -----------------------------------------------------------------------------
worker.training, worker.epoch_counter = False, epoch
worker.gen_ctlr.standing_statistics = cfgs.RUN.standing_statistics
worker.gen_ctlr.standing_max_batch = cfgs.RUN.standing_max_batch
worker.gen_ctlr.standing_step = cfgs.RUN.standing_step
if global_rank == 0:
best_step = ckpt.load_best_model(ckpt_dir=cfgs.RUN.ckpt_dir,
Gen=Gen,
Dis=Dis,
apply_g_ema=cfgs.MODEL.apply_g_ema,
Gen_ema=Gen_ema,
ema=ema)
if len(cfgs.RUN.eval_metrics):
for e in range(cfgs.RUN.num_eval):
if global_rank == 0:
print(""), logger.info("-" * 80)
_ = worker.evaluate(step=best_step, metrics=cfgs.RUN.eval_metrics, writing=False, training=False)
if cfgs.RUN.save_real_images:
if global_rank == 0: print(""), logger.info("-" * 80)
worker.save_real_images()
if cfgs.RUN.save_fake_images:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.save_fake_images(num_images=cfgs.RUN.save_fake_images_num)
if cfgs.RUN.vis_fake_images:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.visualize_fake_images(num_cols=num_cols, current_step=best_step)
if cfgs.RUN.k_nearest_neighbor:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.run_k_nearest_neighbor(dataset=eval_dataset, num_rows=num_rows, num_cols=num_cols)
if cfgs.RUN.interpolation:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.run_linear_interpolation(num_rows=num_rows, num_cols=num_cols, fix_z=True, fix_y=False)
worker.run_linear_interpolation(num_rows=num_rows, num_cols=num_cols, fix_z=False, fix_y=True)
if cfgs.RUN.frequency_analysis:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.run_frequency_analysis(dataloader=eval_dataloader)
if cfgs.RUN.tsne_analysis:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.run_tsne(dataloader=eval_dataloader)
if cfgs.RUN.intra_class_fid:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.calculate_intra_class_fid(dataset=eval_dataset)
if cfgs.RUN.semantic_factorization:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.run_semantic_factorization(num_rows=cfgs.RUN.num_semantic_axis,
num_cols=num_cols,
maximum_variations=cfgs.RUN.maximum_variations)
if cfgs.RUN.GAN_train:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.compute_GAN_train_or_test_classifier_accuracy_score(GAN_train=True, GAN_test=False)
if cfgs.RUN.GAN_test:
if global_rank == 0:
print(""), logger.info("-" * 80)
worker.compute_GAN_train_or_test_classifier_accuracy_score(GAN_train=False, GAN_test=True)
if global_rank == 0:
wandb.finish()
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