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t2iv_train.py
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410 lines (365 loc) · 18.9 KB
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import gc
import json
import math
import os
import os.path as osp
import random
import sys
import time
from functools import partial
from typing import List, Optional, Tuple
os.environ["TOKENIZERS_PARALLELISM"] = "false"
os.environ['XFORMERS_FORCE_DISABLE_TRITON'] = '1'
import numpy as np
import torch
torch._dynamo.config.cache_size_limit = 64
from torch.nn import functional as F
from torch.profiler import record_function
from torch.utils.data import DataLoader
from transformers import T5EncoderModel, T5TokenizerFast
import torch.distributed as tdist
import grn.utils_t2iv.dist as dist
from grn.dataset.build import build_joint_dataset
from grn.models.ema import get_ema_model
from grn.utils_t2iv import arg_util, misc
from grn.utils import wandb_utils
from grn.trainer import get_trainer
def build_everything_from_args(args: arg_util.Args, saver):
args.set_initial_seed(benchmark=True)
print(f'Loading T5 from {args.t5_path}...')
from grn.models.umt5.t5 import T5EncoderModel
text_encoder = T5EncoderModel(
text_len=args.tlen, # 512
dtype=torch.bfloat16, # torch.bfloat16
device=args.device,
checkpoint_path=osp.join(args.t5_path, 'models_t5_umt5-xxl-enc-bf16.pth'),
tokenizer_path=osp.join(args.t5_path, 'umt5-xxl'),
enable_fsdp=True) # False
# text_encoder.model.to(args.device)
text_tokenizer = text_encoder.tokenizer
args.text_tokenizer_type = 'umt5'
args.text_tokenizer = text_tokenizer
# build models. Note that here gpt is the causal VAR transformer which performs next scale prediciton with text guidance
vae_local, gpt_uncompiled, gpt_wo_ddp, gpt_ddp, gpt_wo_ddp_ema, gpt_ddp_ema, gpt_optim = build_model_optimizer(args)
Trainer = get_trainer(args)
# build trainer
trainer = Trainer(
is_visualizer=dist.is_visualizer(), device=args.device,
vae_local=vae_local, gpt_wo_ddp=gpt_wo_ddp, gpt=gpt_ddp,
zero=args.zero, vae_latent_dim=args.vae_latent_dim, gpt_opt=gpt_optim,
reweight_loss_by_scale=args.reweight_loss_by_scale, gpt_wo_ddp_ema=gpt_wo_ddp_ema,
gpt_ema=gpt_ddp_ema, use_fsdp_model_ema=args.use_fsdp_model_ema, other_args=args,
)
# auto resume from broken experiment
global_it = 0
if args.checkpoint_type == 'torch':
from grn.utils_t2iv.save_and_load import auto_resume
auto_resume_info, start_ep, start_it, acc_str, eval_milestone, trainer_state, args_state = auto_resume(args, 'ar-ckpt*.pth')
print(f'initial args:\n{str(args)}')
if start_ep == args.ep:
print(f'[vgpt] AR finished ({acc_str}), skipping ...\n\n')
return None
if trainer_state is not None and len(trainer_state):
trainer.load_state_dict(trainer_state, strict=False, skip_vae=True) # don't load vae again
del vae_local, gpt_uncompiled, gpt_wo_ddp, gpt_ddp, gpt_wo_ddp_ema, gpt_ddp_ema, gpt_optim
dist.barrier()
return text_tokenizer, text_encoder, trainer, global_it
def build_model_optimizer(args):
from torch.nn.parallel import DistributedDataParallel as DDP
from torch.distributed.fsdp import FullyShardedDataParallel as FSDP
from grn.models.grn import MultipleLayers
from grn.models.init_param import init_weights
from grn.utils_t2iv.lr_control import filter_params
from grn.utils_t2iv.load import build_vae_gpt
# disable builtin initialization for speed
setattr(torch.nn.Linear, 'reset_parameters', lambda self: None)
setattr(torch.nn.LayerNorm, 'reset_parameters', lambda self: None)
vae_local, gpt_wo_ddp = build_vae_gpt(args, device=args.model_init_device)
count_p = lambda m: sum(p.numel() for p in m.parameters()) / 1e6
num_para = count_p(gpt_wo_ddp)
if num_para/1000 < 20: # < 20B
gpt_wo_ddp = gpt_wo_ddp.to('cuda')
init_weights(gpt_wo_ddp)
gpt_wo_ddp.special_init()
if args.use_fsdp_model_ema:
gpt_wo_ddp_ema = get_ema_model(gpt_wo_ddp)
else:
gpt_wo_ddp_ema = None
if args.rush_resume:
print(f"{args.rush_resume=}")
if '.pth' in args.rush_resume:
cpu_d = torch.load(args.rush_resume, 'cpu')
else:
from grn.utils_t2iv.save_and_load import merge_ckpt
cpu_d = merge_ckpt(args.rush_resume, osp.join(args.rush_resume, 'ouput'), save=False, use_ema_model=False, fsdp_save_flatten_model=args.fsdp_save_flatten_model)
if 'trainer' in cpu_d:
state_dict = cpu_d['trainer']['gpt_fsdp']
ema_state_dict = cpu_d['trainer'].get('gpt_ema_fsdp', state_dict)
else:
state_dict = cpu_d
ema_state_dict = state_dict
def drop_unfit_weights(state_dict):
try:
if 'word_embed.weight' in state_dict and (state_dict['word_embed.weight'].shape[1] != gpt_wo_ddp.word_embed.in_features):
print(f'[rush_resume] drop word_embed.weight')
del state_dict['word_embed.weight']
if 'head.proj.weight' in state_dict and (state_dict['head.proj.weight'].shape[0] != gpt_wo_ddp.head.proj.out_features):
print(f'[rush_resume] drop head')
del state_dict['head.proj.weight']
del state_dict['head.proj.bias']
except Exception as e:
print(e)
for key in ['word_embed.weight', 'head.proj.weight', 'head.proj.bias']:
if key in state_dict:
del state_dict[key]
print(f'[rush_resume] drop {key}')
if 'text_proj_for_sos.ca.mat_kv.weight' in state_dict and \
(state_dict['text_proj_for_sos.ca.mat_kv.weight'].shape != gpt_wo_ddp.text_proj_for_sos.ca.mat_kv.weight.shape):
print(f'[rush_resume] drop cfg_uncond')
del state_dict['cfg_uncond']
for key in list(state_dict.keys()):
if 'text' in key:
del state_dict[key]
return state_dict
print(gpt_wo_ddp.load_state_dict(drop_unfit_weights(state_dict), strict=False))
if args.use_fsdp_model_ema:
gpt_wo_ddp_ema.load_state_dict(drop_unfit_weights(ema_state_dict), strict=False)
ndim_dict = {name: para.ndim for name, para in gpt_wo_ddp.named_parameters() if para.requires_grad}
print(f'[PT] GPT model = {gpt_wo_ddp}\n\n')
print(f'[PT] GPT model details:')
for name, param in gpt_wo_ddp.named_parameters():
print(f"Name: {name}, Shape: {param.shape}")
print(f'[PT][#para], GPT={num_para:.2f}M parameters\n\n')
gpt_uncompiled = gpt_wo_ddp
gpt_wo_ddp = args.compile_model(gpt_wo_ddp, args.tfast)
gpt_ddp_ema = None
if args.zero:
from torch.distributed.fsdp import ShardingStrategy
from torch.distributed.fsdp.wrap import ModuleWrapPolicy
from torch.distributed.device_mesh import init_device_mesh
# use mix prec: https://github.com/pytorch/pytorch/issues/76607
if args.fsdp_warp_mode == 'full':
print(f'warp all modules for fsdp')
def my_policy(
module: torch.nn.Module,
recurse: bool,
**kwargs,
) -> bool:
return True
auto_wrap_policy = my_policy
else:
print(f'warp transformer blocks for fsdp')
auto_wrap_policy = ModuleWrapPolicy([MultipleLayers, ])
if args.enable_hybrid_shard == 1:
sharding_strategy = ShardingStrategy.HYBRID_SHARD if args.zero == 3 else ShardingStrategy._HYBRID_SHARD_ZERO2
world_size = dist.get_world_size()
assert world_size % args.inner_shard_degree == 0
assert args.inner_shard_degree > 1 and args.inner_shard_degree <= world_size
device_mesh = init_device_mesh('cuda', (world_size // args.inner_shard_degree, args.inner_shard_degree))
elif args.enable_hybrid_shard == -1: # no shard
sharding_strategy = ShardingStrategy.NO_SHARD
device_mesh = None
else:
sharding_strategy = ShardingStrategy.FULL_SHARD if args.zero == 3 else ShardingStrategy.SHARD_GRAD_OP
device_mesh = None
print(f'{">" * 45 + " " * 5} FSDP INIT with {args.zero=} {sharding_strategy=} {auto_wrap_policy=} {" " * 5 + "<" * 45}', flush=True)
if args.fsdp_init_device == 'cpu':
gpt_wo_ddp = gpt_wo_ddp.cpu()
gpt_ddp: FSDP = FSDP(
gpt_wo_ddp,
device_id=dist.get_local_rank(),
sharding_strategy=sharding_strategy,
mixed_precision=None,
auto_wrap_policy=auto_wrap_policy,
use_orig_params=True,
sync_module_states=True,
limit_all_gathers=True,
device_mesh=device_mesh,
).to(args.device)
if args.use_fsdp_model_ema:
gpt_wo_ddp_ema = gpt_wo_ddp_ema.to(args.device)
gpt_ddp_ema: FSDP = FSDP(
gpt_wo_ddp_ema,
device_id=dist.get_local_rank(),
sharding_strategy=sharding_strategy,
mixed_precision=None,
auto_wrap_policy=auto_wrap_policy,
use_orig_params=True,
sync_module_states=True,
limit_all_gathers=True,
device_mesh=device_mesh,
)
else:
ddp_class = DDP if dist.initialized() else misc.NullDDP
gpt_ddp: DDP = ddp_class(gpt_wo_ddp, device_ids=[dist.get_local_rank()], find_unused_parameters=args.dbg, broadcast_buffers=False)
torch.cuda.synchronize()
# =============== build optimizer ===============
nowd_keys = set()
nowd_keys |= {
'cls_token', 'start_token', 'task_token', 'cfg_uncond',
'pos_embed', 'pos_1LC', 'pos_start', 'start_pos', 'lvl_embed',
'gamma', 'beta',
'ada_gss', 'moe_bias',
'scale_mul',
'text_proj_for_sos.ca.mat_q',
'scale_tokens', 'class_tokens'
}
names, paras, para_groups = filter_params(gpt_ddp if args.zero else gpt_wo_ddp, ndim_dict, nowd_keys=nowd_keys)
del ndim_dict
opt_clz = partial(torch.optim.AdamW, betas=(0.9, 0.999), fused=True)
opt_kw = dict(lr=args.tlr, weight_decay=args.twd)
print(f'[vgpt] optim={opt_clz}, opt_kw={opt_kw}\n')
gpt_optim = opt_clz(params=para_groups, **opt_kw)
del names, paras, para_groups
return vae_local, gpt_uncompiled, gpt_wo_ddp, gpt_ddp, gpt_wo_ddp_ema, gpt_ddp_ema, gpt_optim
def build_dataset(args):
train_dataset = build_joint_dataset(
args,
args.data_path,
max_caption_len=args.tlen,
short_prob=args.short_cap_prob,
load_vae_instead_of_image=False
)
return train_dataset
def main_train(args: arg_util.Args):
if args.checkpoint_type == 'torch':
from grn.utils_t2iv.save_and_load import CKPTSaver, auto_resume
saver = CKPTSaver(dist.is_master(), eval_milestone=None)
else:
raise ValueError(f'{args.checkpoint_type=}')
text_tokenizer, text_encoder, trainer, start_global_it = build_everything_from_args(args, saver)
gc.collect(), torch.cuda.empty_cache()
logging_params_milestone: List[int] = np.linspace(1, args.ep, 10+1, dtype=int).tolist()
time.sleep(3), gc.collect(), torch.cuda.empty_cache(), time.sleep(3)
# ============================================= epoch loop begins =============================================
# build wandb logger
if dist.is_master():
wandb_utils.wandb.init(project=args.project_name, name=args.exp_name, config={})
dataloader_generator = torch.Generator()
dataloader_generator.manual_seed(args.seed + tdist.get_rank())
for ep in range(args.ep):
# build data at each epoch to ensure read meta take effects for each dataloader worker
args.epoch = ep
train_dataset = build_dataset(args)
iters_train = len(train_dataset)
print(f'[PT info] from {start_global_it=} {iters_train=}=======> bed: {args.bed} <=======\n')
# build dataloader
train_dataloader = DataLoader(dataset=train_dataset, num_workers=args.workers, pin_memory=True, batch_size=None, shuffle=True, generator=dataloader_generator)
train_dataloader_iter_obj = iter(train_dataloader)
# [train one epoch]
stats, (sec, remain_time, finish_time) = train_one_ep(
ep=ep,
start_global_it=start_global_it,
me=None,
saver=saver,
args=args,
ld_or_itrt=train_dataloader_iter_obj,
iters_train=iters_train,
text_tokenizer=text_tokenizer, text_encoder=text_encoder,
trainer=trainer,
logging_params_milestone=logging_params_milestone,
)
start_global_it += iters_train
del stats, train_dataset, train_dataloader
time.sleep(10), gc.collect(), time.sleep(10) # torch.cuda.empty_cache()
return
def train_one_ep(
ep: int, start_global_it: int, me: misc.MetricLogger,
saver, args: arg_util.Args, ld_or_itrt, iters_train: int,
text_tokenizer: T5TokenizerFast, text_encoder: T5EncoderModel, trainer, logging_params_milestone,
):
# IMPORTANT: import heavy packages after the Dataloader object creation/iteration to avoid OOM
step_cnt = 0
header = f'[Ep]: [{ep:4d}/{args.ep}]'
g_it, max_it = start_global_it, args.ep * iters_train
me = misc.MetricLogger()
[me.add_meter(x, misc.SmoothedValue(window_size=1, fmt='{value:.2g}')) for x in ['tlr']]
[me.add_meter(x, misc.SmoothedValue(window_size=1, fmt='{median:.2f} ({global_avg:.2f})')) for x in ['tnm']]
[me.add_meter(x, misc.SmoothedValue(window_size=1, fmt='{median:.3f} ({global_avg:.3f})')) for x in ['L', 'L_i', 'L_v']]
[me.add_meter(x, misc.SmoothedValue(window_size=1, fmt='{median:.2f} ({global_avg:.2f})')) for x in ['Acc', 'Acc_i', 'Acc_v']]
[me.add_meter(x, misc.SmoothedValue(window_size=1, fmt='{median:.2f} ({global_avg:.2f})')) for x in ['seq_usage']]
# ============================================= iteration loop begins =============================================
start_it = 0
for it, data in me.log_every(start_it, iters_train, ld_or_itrt, args.log_freq, args.log_every_iter, header):
# for dpo training, we will save the first iter model for comparison
g_it += 1
if (g_it > 0 and g_it % args.save_model_iters_freq == 0) or (args.save_start_model and g_it == 1):
if args.checkpoint_type == 'torch':
saver.sav(args=args, g_it=g_it, next_ep=ep, next_it=it+1, trainer=trainer, acc_str=f'[todo]', eval_milestone=None, also_save_to=None, best_save_to=None)
# [get data]
images, captions, raw_features_bcthw, feature_cache_files4images, media, meta_list = data['images'], data['captions'], data['raw_features_bcthw'], data['feature_cache_files4images'], data['media'], data['meta_list']
# # [prepare text features]
if args.add_class_token > 0: # c2i task
text_cond_tuple = [[] for _ in range(5)]
else:
caption_nums = [len(item) for item in captions]
flatten_captions = []
for item in captions:
flatten_captions.extend(item)
if args.text_tokenizer_type == 'flan_t5':
tokens = text_tokenizer(text=flatten_captions, max_length=text_tokenizer.model_max_length, padding='max_length', truncation=True, return_tensors='pt') # todo: put this into dataset
input_ids = tokens.input_ids.cuda(non_blocking=True)
mask = tokens.attention_mask.cuda(non_blocking=True)
text_features = text_encoder(input_ids=input_ids, attention_mask=mask)['last_hidden_state'].float()
lens: List[int] = mask.sum(dim=-1).tolist()
cu_seqlens_k = F.pad(mask.sum(dim=-1).to(dtype=torch.int32).cumsum_(0), (1, 0))
Ltext = max(lens)
kv_compact = []
for text_ind, (len_i, feat_i) in enumerate(zip(lens, text_features.unbind(0))):
kv_compact.append(feat_i[:len_i])
kv_compact = torch.cat(kv_compact, dim=0)
text_cond_tuple: Tuple[torch.FloatTensor, List[int], torch.LongTensor, int] = (kv_compact, lens, cu_seqlens_k, Ltext, caption_nums)
else:
text_features = text_encoder(flatten_captions, args.device)
lens = [len(item) for item in text_features]
cu_seqlens_k = [0]
for len_i in lens:
cu_seqlens_k.append(cu_seqlens_k[-1] + len_i)
cu_seqlens_k = torch.tensor(cu_seqlens_k, dtype=torch.int32)
Ltext = max(lens)
kv_compact = torch.cat(text_features, dim=0).float()
text_cond_tuple = (kv_compact, lens, cu_seqlens_k, Ltext, caption_nums)
if len(images):
images = [item.to(args.device, non_blocking=True) for item in images]
if len(raw_features_bcthw):
raw_features_bcthw = [item.to(args.device, non_blocking=True) for item in raw_features_bcthw]
# [schedule learning rate and weight decay]
if ep == 0 and (g_it-start_global_it) < args.wp_it:
cur_lr_ratio = args.wp0 + (1-args.wp0) * (g_it-start_global_it) / args.wp_it
else:
cur_lr_ratio = 1
cur_lr = args.tlr * cur_lr_ratio
if cur_lr_ratio < 1:
cur_wd = args.twd
for param_group in trainer.gpt_opt.param_groups:
param_group['lr'] = cur_lr * param_group.get('lr_sc', 1) # 'lr_sc' could be assigned
param_group['weight_decay'] = cur_wd * param_group.get('wd_sc', 1)
# [get scheduled hyperparameters]
stepping = (g_it + 1) % args.gradient_accumulation == 0
step_cnt += int(stepping)
trainer.train_step(
ep=ep, it=it, g_it=g_it, stepping=stepping, clip_decay_ratio=1,
metric_lg=me,
logging_params=stepping and step_cnt == 1 and (ep < 4 or ep in logging_params_milestone),
inp_B3HW=images,
raw_features_bcthw=raw_features_bcthw,
feature_cache_files4images=feature_cache_files4images,
text_cond_tuple=text_cond_tuple,
media=media,
meta_list=meta_list,
args=args,
)
me.update(tlr=cur_lr)
# ============================================= iteration loop ends =============================================
me.synchronize_between_processes()
return {k: meter.global_avg for k, meter in me.meters.items()}, me.iter_time.time_preds(max_it - (g_it + 1) + (args.ep - ep) * 15) # +15: other cost
def main():
args: arg_util.Args = arg_util.init_dist_and_get_args()
main_train(args)
print(f'final args:\n\n{str(args)}')
if isinstance(sys.stdout, dist.BackupStreamToFile) and isinstance(sys.stderr, dist.BackupStreamToFile):
sys.stdout.close(), sys.stderr.close()
dist.barrier()
time.sleep(120)
if __name__ == '__main__':
main()