import math import os import time from functools import partial import torch from arguments import parse_args from evaluation import evaluate from loss import LossForPretraining from nvidia_bert_dataset_provider import NvidiaBertDatasetProvider from pretrain_utils import get_lr_scheduler, get_model, get_optimizer, save_ckpt from tqdm import tqdm from transformers import AutoTokenizer from utils.exp_util import get_mem_info, get_tflops, log_args, throughput_calculator from utils.global_vars import get_tensorboard_writer, get_timers, set_global_variables from utils.logger import Logger import colossalai from colossalai.accelerator import get_accelerator from colossalai.context import ParallelMode from colossalai.nn.parallel import zero_model_wrapper, zero_optim_wrapper from colossalai.tensor import ProcessGroup, ShardSpec from colossalai.utils.model.colo_init_context import ColoInitContext def main(): args = parse_args() launch_time = time.strftime("%Y-%m-%d-%H:%M:%S", time.localtime()) tokenizer = AutoTokenizer.from_pretrained(args.tokenizer_path) # os.environ['CUDA_LAUNCH_BLOCKING'] = '1' logger = Logger(os.path.join(args.log_path, launch_time), cuda=torch.cuda.is_available(), debug=args.vscode_debug) if args.vscode_debug: colossalai.launch( rank=args.rank, world_size=args.world_size, host=args.host, port=args.port, backend=args.backend ) args.local_rank = -1 args.log_interval = 1 else: colossalai.launch_from_torch() # args.colossal_config args.local_rank = int(os.environ["LOCAL_RANK"]) logger.info( f"launch_from_torch, world size: {torch.distributed.get_world_size()} | " + f"ParallelMode.MODEL: {ParallelMode.MODEL} | ParallelMode.DATA: {ParallelMode.DATA} | ParallelMode.TENSOR: {ParallelMode.TENSOR}" ) log_args(logger, args) args.tokenizer = tokenizer args.logger = logger set_global_variables(launch_time, args.tensorboard_path) world_size = torch.distributed.get_world_size() get_accelerator().get_current_device() # build model, optimizer and criterion if args.distplan.startswith("CAI"): # all param must use the same process group. world_size = torch.distributed.get_world_size() shard_pg = ProcessGroup(tp_degree=world_size) if args.shardinit else None default_dist_spec = ShardSpec([-1], [world_size]) if args.shardinit else None if args.shardinit and args.distplan != "CAI_Gemini": raise RuntimeError("You can only use shardinit with CAI_Gemini") # build GPT model with ColoInitContext( device=get_accelerator().get_current_device(), dtype=torch.half, default_dist_spec=default_dist_spec, default_pg=shard_pg, ): config, model, numel = get_model(args, logger) # assign running configurations gemini_config = None if args.distplan.startswith("CAI_ZeRO"): optim_config = dict(reduce_bucket_size=12 * 1024 * 1024, overlap_communication=True, verbose=True) elif args.distplan == "CAI_Gemini": gemini_config = dict( strict_ddp_mode=args.tp_degree == 1, device=get_accelerator().get_current_device(), placement_policy=args.placement, pin_memory=True, hidden_dim=model.config.hidden_size, search_range_m=128, ) optim_config = dict(gpu_margin_mem_ratio=0.0) else: raise RuntimeError # build a highly optimized gpu/cpu optimizer optimizer = get_optimizer(model, lr=args.lr) if args.distplan == "CAI_ZeRO1": zero_stage = 1 elif args.distplan == "CAI_ZeRO2": zero_stage = 2 elif args.distplan == "CAI_Gemini": zero_stage = 3 else: raise RuntimeError # wrap your model and optimizer model = zero_model_wrapper(model, zero_stage, gemini_config) optimizer = zero_optim_wrapper(model, optimizer, optim_config=optim_config) logger.info(get_mem_info(prefix="After init optim, ")) else: config, model, numel = get_model(args, logger) logger.info("no_zero") if torch.distributed.get_rank() == 0: os.mkdir(os.path.join(args.ckpt_path, launch_time)) logger.info(f"Model numel: {numel}") get_tflops_func = partial(get_tflops, numel, args.train_micro_batch_size_per_gpu, args.max_seq_length) # 144003367 is is the length of the entire dataset # len(dataloader) steps_per_epoch = ( 144003367 // world_size // args.train_micro_batch_size_per_gpu // args.gradient_accumulation_steps // args.refresh_bucket_size ) total_steps = steps_per_epoch * args.epoch lr_scheduler = get_lr_scheduler(optimizer, total_steps=total_steps, last_epoch=-1) start_epoch = 0 start_shard = 0 global_step = 0 if args.resume_train: assert os.path.exists(args.load_optimizer_lr) o_l_state_dict = torch.load(args.load_optimizer_lr, map_location="cpu") o_l_state_dict["lr_scheduler"]["last_epoch"] = o_l_state_dict["lr_scheduler"]["last_epoch"] - 1 optimizer.load_state_dict(o_l_state_dict["optimizer"]) # o_l_state_dict['lr_scheduler']['last_epoch'] lr_scheduler = get_lr_scheduler( optimizer, total_steps=total_steps, last_epoch=o_l_state_dict["lr_scheduler"]["last_epoch"] ) for state in optimizer.state.values(): for k, v in state.items(): if isinstance(v, torch.Tensor): state[k] = v.cuda(f"cuda:{torch.cuda.current_device()}") # if you want delete the above three code, must move the model to gpu. Because in optimizer.step() lr_scheduler.load_state_dict(o_l_state_dict["lr_scheduler"]) start_epoch = o_l_state_dict["epoch"] start_shard = o_l_state_dict["shard"] + 1 # global_step = o_l_state_dict['global_step'] + 1 logger.info( f"resume from epoch {start_epoch} shard {start_shard} step {lr_scheduler.last_epoch} lr {lr_scheduler.get_last_lr()[0]}" ) criterion = LossForPretraining(config.vocab_size) # build dataloader pretrain_dataset_provider = NvidiaBertDatasetProvider(args) logger.info(get_mem_info(prefix="After init model, ")) eval_loss = 0 train_loss = 0 timers = get_timers() timers("interval_time").start() timers("epoch_time").start() timers("shard_time").start() for epoch in range(start_epoch, args.epoch): for shard in range(start_shard, len(os.listdir(args.data_path_prefix))): dataset_iterator, total_length = pretrain_dataset_provider.get_shard(shard) # pretrain_dataset_provider.prefetch_shard(shard + 1) # may cause cpu memory overload if torch.distributed.get_rank() == 0: iterator_data = tqdm( enumerate(dataset_iterator), total=(total_length // args.train_micro_batch_size_per_gpu // world_size), colour="cyan", smoothing=1, ) else: iterator_data = enumerate(dataset_iterator) model.train() for step, batch_data in iterator_data: # batch_data = pretrain_dataset_provider.get_batch(batch_index) input_ids = batch_data[0].cuda(f"cuda:{torch.cuda.current_device()}") attention_mask = batch_data[1].cuda(f"cuda:{torch.cuda.current_device()}") token_type_ids = batch_data[2].cuda(f"cuda:{torch.cuda.current_device()}") mlm_label = batch_data[3].cuda(f"cuda:{torch.cuda.current_device()}") # nsp_label = batch_data[5].cuda() output = model(input_ids=input_ids, token_type_ids=token_type_ids, attention_mask=attention_mask) loss = criterion(output.logits, mlm_label) pretrain_dataset_provider.prefetch_batch() optimizer.backward(loss) train_loss += loss.float().item() # if (step + 1) % args.accumulation_step == 0: optimizer.step() lr_scheduler.step() optimizer.zero_grad() global_step += 1 if global_step % args.log_interval == 0 and global_step != 0 and torch.distributed.get_rank() == 0: elapsed_time = timers("interval_time").elapsed(reset=False) elapsed_time_per_iteration = elapsed_time / global_step samples_per_sec, tflops, approx_parameters_in_billions = throughput_calculator( numel, args, config, elapsed_time, global_step, world_size ) cur_loss = train_loss / args.log_interval current_lr = lr_scheduler.get_last_lr()[0] log_str = ( f"| epoch: {epoch} | shard: {shard} | step: {global_step} | lr {current_lr:.7f} | elapsed_time: {elapsed_time / 60 :.3f} minutes " + f"| mins/batch: {elapsed_time_per_iteration :.3f} seconds | loss: {cur_loss:.7f} | ppl: {math.exp(cur_loss):.3f} | TFLOPS: {get_tflops_func(elapsed_time_per_iteration):.3f} or {tflops:.3f}" ) logger.info(log_str, print_=False) if args.wandb: tensorboard_log = get_tensorboard_writer() tensorboard_log.log_train( { "lr": current_lr, "loss": cur_loss, "ppl": math.exp(cur_loss), "mins_batch": elapsed_time_per_iteration, }, global_step, ) train_loss = 0 logger.info(f'epoch {epoch} shard {shard} has cost {timers("shard_time").elapsed() / 60 :.3f} mins') logger.info("*" * 100) eval_loss += evaluate(model, args, logger, global_step, criterion) save_ckpt( model, optimizer, lr_scheduler, os.path.join(args.ckpt_path, launch_time, f"epoch-{epoch}_shard-{shard}_" + launch_time), epoch, shard, global_step, ) eval_loss /= len(os.listdir(args.data_path_prefix)) logger.info( f'epoch {epoch} | shard_length {len(os.listdir(args.data_path_prefix))} | elapsed_time: {timers("epoch_time").elapsed() / 60 :.3f} mins' + f"eval_loss: {eval_loss} | ppl: {math.exp(eval_loss)}" ) logger.info("-" * 100) if args.wandb and torch.distributed.get_rank() == 0: tensorboard_log = get_tensorboard_writer() tensorboard_log.log_eval( { "all_eval_shard_loss": eval_loss, }, epoch, ) start_shard = 0 eval_loss = 0 pretrain_dataset_provider.release_shard() logger.info("Congratulation, training has finished!!!") if __name__ == "__main__": main()