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'''
* Copyright (c) 2022, salesforce.com, inc.
* All rights reserved.
* SPDX-License-Identifier: BSD-3-Clause
* For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
* By Junnan Li
'''
import argparse
import os
import ruamel_yaml as yaml
import numpy as np
import random
import time
import datetime
import json
from pathlib import Path
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.backends.cudnn as cudnn
import torch.distributed as dist
from torch.utils.data import DataLoader
from models.blip import blip_decoder
import utils
from utils import cosine_lr_schedule
from data import create_dataset, create_sampler, create_loader
from data.utils import save_result, coco_caption_eval
def train(model, data_loader, optimizer, epoch, device):
# train
model.train()
metric_logger = utils.MetricLogger(delimiter=" ")
metric_logger.add_meter('lr', utils.SmoothedValue(window_size=1, fmt='{value:.6f}'))
metric_logger.add_meter('loss', utils.SmoothedValue(window_size=1, fmt='{value:.4f}'))
header = 'Train Caption Epoch: [{}]'.format(epoch)
print_freq = 50
for i, (image, caption, _) in enumerate(metric_logger.log_every(data_loader, print_freq, header)):
image = image.to(device)
loss = model(image, caption)
optimizer.zero_grad()
loss.backward()
optimizer.step()
metric_logger.update(loss=loss.item())
metric_logger.update(lr=optimizer.param_groups[0]["lr"])
# gather the stats from all processes
metric_logger.synchronize_between_processes()
print("Averaged stats:", metric_logger.global_avg())
return {k: "{:.3f}".format(meter.global_avg) for k, meter in metric_logger.meters.items()}
@torch.no_grad()
def evaluate(model, data_loader, device, config):
# evaluate
model.eval()
metric_logger = utils.MetricLogger(delimiter=" ")
header = 'Caption generation:'
print_freq = 10
result = []
for image, image_id in metric_logger.log_every(data_loader, print_freq, header):
image = image.to(device)
captions = model.generate(image, sample=False, num_beams=config['num_beams'], max_length=config['max_length'],
min_length=config['min_length'])
for caption, img_id in zip(captions, image_id):
result.append({"image_id": img_id.item(), "caption": caption})
return result
def main(args, config):
utils.init_distributed_mode(args)
device = torch.device(args.device)
# fix the seed for reproducibility
seed = args.seed + utils.get_rank()
torch.manual_seed(seed)
np.random.seed(seed)
random.seed(seed)
cudnn.benchmark = True
#### Dataset ####
print("Creating captioning dataset")
train_dataset, val_dataset, test_dataset = create_dataset('caption_coco', config)
if args.distributed:
num_tasks = utils.get_world_size()
global_rank = utils.get_rank()
samplers = create_sampler([train_dataset,val_dataset,test_dataset], [True,False,False], num_tasks, global_rank)
else:
samplers = [None, None, None]
train_loader, val_loader, test_loader = create_loader([train_dataset, val_dataset, test_dataset],samplers,
batch_size=[config['batch_size']]*3,num_workers=[4,4,4],
is_trains=[True, False, False], collate_fns=[None,None,None])
#### Model ####
print("Creating model")
model = blip_decoder(pretrained=config['pretrained'], image_size=config['image_size'], vit=config['vit'],
vit_grad_ckpt=config['vit_grad_ckpt'], vit_ckpt_layer=config['vit_ckpt_layer'],
prompt=config['prompt'])
model = model.to(device)
model_without_ddp = model
if args.distributed:
model = torch.nn.parallel.DistributedDataParallel(model, device_ids=[args.gpu])
model_without_ddp = model.module
optimizer = torch.optim.AdamW(params=model.parameters(), lr=config['init_lr'], weight_decay=config['weight_decay'])
best = 0
best_epoch = 0
print("Start training")
start_time = time.time()
for epoch in range(0, config['max_epoch']):
if not args.evaluate:
if args.distributed:
train_loader.sampler.set_epoch(epoch)
cosine_lr_schedule(optimizer, epoch, config['max_epoch'], config['init_lr'], config['min_lr'])
train_stats = train(model, train_loader, optimizer, epoch, device)
val_result = evaluate(model_without_ddp, val_loader, device, config)
val_result_file = save_result(val_result, args.result_dir, 'val_epoch%d'%epoch, remove_duplicate='image_id')
test_result = evaluate(model_without_ddp, test_loader, device, config)
test_result_file = save_result(test_result, args.result_dir, 'test_epoch%d'%epoch, remove_duplicate='image_id')
if utils.is_main_process():
coco_val = coco_caption_eval(config['coco_gt_root'],val_result_file,'val')
coco_test = coco_caption_eval(config['coco_gt_root'],test_result_file,'test')
if args.evaluate:
log_stats = {**{f'val_{k}': v for k, v in coco_val.eval.items()},
**{f'test_{k}': v for k, v in coco_test.eval.items()},
}
with open(os.path.join(args.output_dir, "evaluate.txt"),"a") as f:
f.write(json.dumps(log_stats) + "\n")
else:
save_obj = {
'model': model_without_ddp.state_dict(),
'optimizer': optimizer.state_dict(),
'config': config,
'epoch': epoch,
}
if coco_val.eval['CIDEr'] + coco_val.eval['Bleu_4'] > best:
best = coco_val.eval['CIDEr'] + coco_val.eval['Bleu_4']
best_epoch = epoch
torch.save(save_obj, os.path.join(args.output_dir, 'checkpoint_best.pth'))
log_stats = {**{f'train_{k}': v for k, v in train_stats.items()},
**{f'val_{k}': v for k, v in coco_val.eval.items()},
**{f'test_{k}': v for k, v in coco_test.eval.items()},
'epoch': epoch,
'best_epoch': best_epoch,
}
with open(os.path.join(args.output_dir, "log.txt"),"a") as f:
f.write(json.dumps(log_stats) + "\n")
if args.evaluate:
break
dist.barrier()
total_time = time.time() - start_time
total_time_str = str(datetime.timedelta(seconds=int(total_time)))
print('Training time {}'.format(total_time_str))
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('--config', default='./configs/caption_coco.yaml')
parser.add_argument('--output_dir', default='output/Caption_coco')
parser.add_argument('--evaluate', action='store_true')
parser.add_argument('--device', default='cuda')
parser.add_argument('--seed', default=42, type=int)
parser.add_argument('--world_size', default=1, type=int, help='number of distributed processes')
parser.add_argument('--dist_url', default='env://', help='url used to set up distributed training')
parser.add_argument('--distributed', default=True, type=bool)
args = parser.parse_args()
config = yaml.load(open(args.config, 'r'), Loader=yaml.Loader)
args.result_dir = os.path.join(args.output_dir, 'result')
Path(args.output_dir).mkdir(parents=True, exist_ok=True)
Path(args.result_dir).mkdir(parents=True, exist_ok=True)
yaml.dump(config, open(os.path.join(args.output_dir, 'config.yaml'), 'w'))
main(args, config) |