From 47ecb2238749e46d3bcfa30523850c92864a1837 Mon Sep 17 00:00:00 2001 From: Haofan Wang Date: Mon, 20 Feb 2023 16:23:12 +0800 Subject: [PATCH] [example] add LoRA support (#2821) * add lora * format --- .../train_dreambooth_colossalai_lora.py | 691 ++++++++++++++++++ 1 file changed, 691 insertions(+) create mode 100644 examples/images/dreambooth/train_dreambooth_colossalai_lora.py diff --git a/examples/images/dreambooth/train_dreambooth_colossalai_lora.py b/examples/images/dreambooth/train_dreambooth_colossalai_lora.py new file mode 100644 index 000000000..3d789ae2c --- /dev/null +++ b/examples/images/dreambooth/train_dreambooth_colossalai_lora.py @@ -0,0 +1,691 @@ +import argparse +import hashlib +import math +import os +from pathlib import Path +from typing import Optional + +import torch +import torch.nn.functional as F +import torch.utils.checkpoint +from diffusers import AutoencoderKL, DDPMScheduler, DiffusionPipeline, UNet2DConditionModel +from diffusers.loaders import AttnProcsLayers +from diffusers.models.cross_attention import LoRACrossAttnProcessor +from diffusers.optimization import get_scheduler +from huggingface_hub import HfFolder, Repository, create_repo, whoami +from PIL import Image +from torch.utils.data import Dataset +from torchvision import transforms +from tqdm.auto import tqdm +from transformers import AutoTokenizer, PretrainedConfig + +import colossalai +from colossalai.context.parallel_mode import ParallelMode +from colossalai.core import global_context as gpc +from colossalai.logging import disable_existing_loggers, get_dist_logger +from colossalai.nn.optimizer.gemini_optimizer import GeminiAdamOptimizer +from colossalai.nn.parallel.utils import get_static_torch_model +from colossalai.utils import get_current_device +from colossalai.utils.model.colo_init_context import ColoInitContext + +disable_existing_loggers() +logger = get_dist_logger() + + +def import_model_class_from_model_name_or_path(pretrained_model_name_or_path: str): + text_encoder_config = PretrainedConfig.from_pretrained( + pretrained_model_name_or_path, + subfolder="text_encoder", + revision=args.revision, + ) + model_class = text_encoder_config.architectures[0] + + if model_class == "CLIPTextModel": + from transformers import CLIPTextModel + + return CLIPTextModel + elif model_class == "RobertaSeriesModelWithTransformation": + from diffusers.pipelines.alt_diffusion.modeling_roberta_series import RobertaSeriesModelWithTransformation + + return RobertaSeriesModelWithTransformation + else: + raise ValueError(f"{model_class} is not supported.") + + +def parse_args(input_args=None): + parser = argparse.ArgumentParser(description="Simple example of a training script.") + parser.add_argument( + "--pretrained_model_name_or_path", + type=str, + default=None, + required=True, + help="Path to pretrained model or model identifier from huggingface.co/models.", + ) + parser.add_argument( + "--revision", + type=str, + default=None, + required=False, + help="Revision of pretrained model identifier from huggingface.co/models.", + ) + parser.add_argument( + "--tokenizer_name", + type=str, + default=None, + help="Pretrained tokenizer name or path if not the same as model_name", + ) + parser.add_argument( + "--instance_data_dir", + type=str, + default=None, + required=True, + help="A folder containing the training data of instance images.", + ) + parser.add_argument( + "--class_data_dir", + type=str, + default=None, + required=False, + help="A folder containing the training data of class images.", + ) + parser.add_argument( + "--instance_prompt", + type=str, + default="a photo of sks dog", + required=False, + help="The prompt with identifier specifying the instance", + ) + parser.add_argument( + "--class_prompt", + type=str, + default=None, + help="The prompt to specify images in the same class as provided instance images.", + ) + parser.add_argument( + "--with_prior_preservation", + default=False, + action="store_true", + help="Flag to add prior preservation loss.", + ) + parser.add_argument("--prior_loss_weight", type=float, default=1.0, help="The weight of prior preservation loss.") + parser.add_argument( + "--num_class_images", + type=int, + default=100, + help=("Minimal class images for prior preservation loss. If there are not enough images already present in" + " class_data_dir, additional images will be sampled with class_prompt."), + ) + parser.add_argument( + "--output_dir", + type=str, + default="text-inversion-model", + help="The output directory where the model predictions and checkpoints will be written.", + ) + parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.") + parser.add_argument( + "--resolution", + type=int, + default=512, + help=("The resolution for input images, all the images in the train/validation dataset will be resized to this" + " resolution"), + ) + parser.add_argument( + "--placement", + type=str, + default="cpu", + help="Placement Policy for Gemini. Valid when using colossalai as dist plan.", + ) + parser.add_argument( + "--center_crop", + default=False, + action="store_true", + help=("Whether to center crop the input images to the resolution. If not set, the images will be randomly" + " cropped. The images will be resized to the resolution first before cropping."), + ) + parser.add_argument("--train_batch_size", + type=int, + default=4, + help="Batch size (per device) for the training dataloader.") + parser.add_argument("--sample_batch_size", type=int, default=4, help="Batch size (per device) for sampling images.") + parser.add_argument("--num_train_epochs", type=int, default=1) + parser.add_argument( + "--max_train_steps", + type=int, + default=None, + help="Total number of training steps to perform. If provided, overrides num_train_epochs.", + ) + parser.add_argument("--save_steps", type=int, default=500, help="Save checkpoint every X updates steps.") + parser.add_argument( + "--gradient_checkpointing", + action="store_true", + help="Whether or not to use gradient checkpointing to save memory at the expense of slower backward pass.", + ) + parser.add_argument( + "--learning_rate", + type=float, + default=5e-6, + help="Initial learning rate (after the potential warmup period) to use.", + ) + parser.add_argument( + "--scale_lr", + action="store_true", + default=False, + help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.", + ) + parser.add_argument( + "--lr_scheduler", + type=str, + default="constant", + help=('The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",' + ' "constant", "constant_with_warmup"]'), + ) + parser.add_argument("--lr_warmup_steps", + type=int, + default=500, + help="Number of steps for the warmup in the lr scheduler.") + parser.add_argument("--use_8bit_adam", + action="store_true", + help="Whether or not to use 8-bit Adam from bitsandbytes.") + + parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.") + parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.") + parser.add_argument("--hub_token", type=str, default=None, help="The token to use to push to the Model Hub.") + parser.add_argument( + "--hub_model_id", + type=str, + default=None, + help="The name of the repository to keep in sync with the local `output_dir`.", + ) + parser.add_argument( + "--logging_dir", + type=str, + default="logs", + help=("[TensorBoard](https://www.tensorflow.org/tensorboard) log directory. Will default to" + " *output_dir/runs/**CURRENT_DATETIME_HOSTNAME***."), + ) + parser.add_argument( + "--mixed_precision", + type=str, + default=None, + choices=["no", "fp16", "bf16"], + help=( + "Whether to use mixed precision. Choose between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >=" + " 1.10.and an Nvidia Ampere GPU. Default to the value of accelerate config of the current system or the" + " flag passed with the `accelerate.launch` command. Use this argument to override the accelerate config."), + ) + parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank") + + if input_args is not None: + args = parser.parse_args(input_args) + else: + args = parser.parse_args() + + env_local_rank = int(os.environ.get("LOCAL_RANK", -1)) + if env_local_rank != -1 and env_local_rank != args.local_rank: + args.local_rank = env_local_rank + + if args.with_prior_preservation: + if args.class_data_dir is None: + raise ValueError("You must specify a data directory for class images.") + if args.class_prompt is None: + raise ValueError("You must specify prompt for class images.") + else: + if args.class_data_dir is not None: + logger.warning("You need not use --class_data_dir without --with_prior_preservation.") + if args.class_prompt is not None: + logger.warning("You need not use --class_prompt without --with_prior_preservation.") + + return args + + +class DreamBoothDataset(Dataset): + """ + A dataset to prepare the instance and class images with the prompts for fine-tuning the model. + It pre-processes the images and the tokenizes prompts. + """ + + def __init__( + self, + instance_data_root, + instance_prompt, + tokenizer, + class_data_root=None, + class_prompt=None, + size=512, + center_crop=False, + ): + self.size = size + self.center_crop = center_crop + self.tokenizer = tokenizer + + self.instance_data_root = Path(instance_data_root) + if not self.instance_data_root.exists(): + raise ValueError("Instance images root doesn't exists.") + + self.instance_images_path = list(Path(instance_data_root).iterdir()) + self.num_instance_images = len(self.instance_images_path) + self.instance_prompt = instance_prompt + self._length = self.num_instance_images + + if class_data_root is not None: + self.class_data_root = Path(class_data_root) + self.class_data_root.mkdir(parents=True, exist_ok=True) + self.class_images_path = list(self.class_data_root.iterdir()) + self.num_class_images = len(self.class_images_path) + self._length = max(self.num_class_images, self.num_instance_images) + self.class_prompt = class_prompt + else: + self.class_data_root = None + + self.image_transforms = transforms.Compose([ + transforms.Resize(size, interpolation=transforms.InterpolationMode.BILINEAR), + transforms.CenterCrop(size) if center_crop else transforms.RandomCrop(size), + transforms.ToTensor(), + transforms.Normalize([0.5], [0.5]), + ]) + + def __len__(self): + return self._length + + def __getitem__(self, index): + example = {} + instance_image = Image.open(self.instance_images_path[index % self.num_instance_images]) + if not instance_image.mode == "RGB": + instance_image = instance_image.convert("RGB") + example["instance_images"] = self.image_transforms(instance_image) + example["instance_prompt_ids"] = self.tokenizer( + self.instance_prompt, + padding="do_not_pad", + truncation=True, + max_length=self.tokenizer.model_max_length, + ).input_ids + + if self.class_data_root: + class_image = Image.open(self.class_images_path[index % self.num_class_images]) + if not class_image.mode == "RGB": + class_image = class_image.convert("RGB") + example["class_images"] = self.image_transforms(class_image) + example["class_prompt_ids"] = self.tokenizer( + self.class_prompt, + padding="do_not_pad", + truncation=True, + max_length=self.tokenizer.model_max_length, + ).input_ids + + return example + + +class PromptDataset(Dataset): + "A simple dataset to prepare the prompts to generate class images on multiple GPUs." + + def __init__(self, prompt, num_samples): + self.prompt = prompt + self.num_samples = num_samples + + def __len__(self): + return self.num_samples + + def __getitem__(self, index): + example = {} + example["prompt"] = self.prompt + example["index"] = index + return example + + +def get_full_repo_name(model_id: str, organization: Optional[str] = None, token: Optional[str] = None): + if token is None: + token = HfFolder.get_token() + if organization is None: + username = whoami(token)["name"] + return f"{username}/{model_id}" + else: + return f"{organization}/{model_id}" + + +# Gemini + ZeRO DDP +def gemini_zero_dpp(model: torch.nn.Module, placememt_policy: str = "auto"): + from colossalai.nn.parallel import GeminiDDP + + model = GeminiDDP(model, + device=get_current_device(), + placement_policy=placememt_policy, + pin_memory=True, + search_range_mb=64) + return model + + +def main(args): + if args.seed is None: + colossalai.launch_from_torch(config={}) + else: + colossalai.launch_from_torch(config={}, seed=args.seed) + + local_rank = gpc.get_local_rank(ParallelMode.DATA) + world_size = gpc.get_world_size(ParallelMode.DATA) + + if args.with_prior_preservation: + class_images_dir = Path(args.class_data_dir) + if not class_images_dir.exists(): + class_images_dir.mkdir(parents=True) + cur_class_images = len(list(class_images_dir.iterdir())) + + if cur_class_images < args.num_class_images: + torch_dtype = torch.float16 if get_current_device() == "cuda" else torch.float32 + pipeline = DiffusionPipeline.from_pretrained( + args.pretrained_model_name_or_path, + torch_dtype=torch_dtype, + safety_checker=None, + revision=args.revision, + ) + pipeline.set_progress_bar_config(disable=True) + + num_new_images = args.num_class_images - cur_class_images + logger.info(f"Number of class images to sample: {num_new_images}.") + + sample_dataset = PromptDataset(args.class_prompt, num_new_images) + sample_dataloader = torch.utils.data.DataLoader(sample_dataset, batch_size=args.sample_batch_size) + + pipeline.to(get_current_device()) + + for example in tqdm( + sample_dataloader, + desc="Generating class images", + disable=not local_rank == 0, + ): + images = pipeline(example["prompt"]).images + + for i, image in enumerate(images): + hash_image = hashlib.sha1(image.tobytes()).hexdigest() + image_filename = class_images_dir / f"{example['index'][i] + cur_class_images}-{hash_image}.jpg" + image.save(image_filename) + + del pipeline + + # Handle the repository creation + if local_rank == 0: + if args.push_to_hub: + if args.hub_model_id is None: + repo_name = get_full_repo_name(Path(args.output_dir).name, token=args.hub_token) + else: + repo_name = args.hub_model_id + create_repo(repo_name, exist_ok=True, token=args.hub_token) + repo = Repository(args.output_dir, clone_from=repo_name, token=args.hub_token) + + with open(os.path.join(args.output_dir, ".gitignore"), "w+") as gitignore: + if "step_*" not in gitignore: + gitignore.write("step_*\n") + if "epoch_*" not in gitignore: + gitignore.write("epoch_*\n") + elif args.output_dir is not None: + os.makedirs(args.output_dir, exist_ok=True) + + # Load the tokenizer + if args.tokenizer_name: + logger.info(f"Loading tokenizer from {args.tokenizer_name}", ranks=[0]) + tokenizer = AutoTokenizer.from_pretrained( + args.tokenizer_name, + revision=args.revision, + use_fast=False, + ) + elif args.pretrained_model_name_or_path: + logger.info("Loading tokenizer from pretrained model", ranks=[0]) + tokenizer = AutoTokenizer.from_pretrained( + args.pretrained_model_name_or_path, + subfolder="tokenizer", + revision=args.revision, + use_fast=False, + ) + # import correct text encoder class + text_encoder_cls = import_model_class_from_model_name_or_path(args.pretrained_model_name_or_path) + + # Load models and create wrapper for stable diffusion + + logger.info(f"Loading text_encoder from {args.pretrained_model_name_or_path}", ranks=[0]) + + text_encoder = text_encoder_cls.from_pretrained( + args.pretrained_model_name_or_path, + subfolder="text_encoder", + revision=args.revision, + ) + + logger.info(f"Loading AutoencoderKL from {args.pretrained_model_name_or_path}", ranks=[0]) + vae = AutoencoderKL.from_pretrained( + args.pretrained_model_name_or_path, + subfolder="vae", + revision=args.revision, + ) + + logger.info(f"Loading UNet2DConditionModel from {args.pretrained_model_name_or_path}", ranks=[0]) + with ColoInitContext(device=get_current_device()): + unet = UNet2DConditionModel.from_pretrained(args.pretrained_model_name_or_path, + subfolder="unet", + revision=args.revision, + low_cpu_mem_usage=False) + unet.requires_grad_(False) + + # Set correct lora layers + lora_attn_procs = {} + for name in unet.attn_processors.keys(): + cross_attention_dim = None if name.endswith("attn1.processor") else unet.config.cross_attention_dim + if name.startswith("mid_block"): + hidden_size = unet.config.block_out_channels[-1] + elif name.startswith("up_blocks"): + block_id = int(name[len("up_blocks.")]) + hidden_size = list(reversed(unet.config.block_out_channels))[block_id] + elif name.startswith("down_blocks"): + block_id = int(name[len("down_blocks.")]) + hidden_size = unet.config.block_out_channels[block_id] + + lora_attn_procs[name] = LoRACrossAttnProcessor(hidden_size=hidden_size, + cross_attention_dim=cross_attention_dim) + + unet.set_attn_processor(lora_attn_procs) + lora_layers = AttnProcsLayers(unet.attn_processors) + + vae.requires_grad_(False) + text_encoder.requires_grad_(False) + + if args.gradient_checkpointing: + unet.enable_gradient_checkpointing() + + if args.scale_lr: + args.learning_rate = args.learning_rate * args.train_batch_size * world_size + + unet = gemini_zero_dpp(unet, args.placement) + + # config optimizer for colossalai zero + optimizer = GeminiAdamOptimizer(unet, lr=args.learning_rate, initial_scale=2**5, clipping_norm=args.max_grad_norm) + + # load noise_scheduler + noise_scheduler = DDPMScheduler.from_pretrained(args.pretrained_model_name_or_path, subfolder="scheduler") + + # prepare dataset + logger.info(f"Prepare dataset from {args.instance_data_dir}", ranks=[0]) + train_dataset = DreamBoothDataset( + instance_data_root=args.instance_data_dir, + instance_prompt=args.instance_prompt, + class_data_root=args.class_data_dir if args.with_prior_preservation else None, + class_prompt=args.class_prompt, + tokenizer=tokenizer, + size=args.resolution, + center_crop=args.center_crop, + ) + + def collate_fn(examples): + input_ids = [example["instance_prompt_ids"] for example in examples] + pixel_values = [example["instance_images"] for example in examples] + + # Concat class and instance examples for prior preservation. + # We do this to avoid doing two forward passes. + if args.with_prior_preservation: + input_ids += [example["class_prompt_ids"] for example in examples] + pixel_values += [example["class_images"] for example in examples] + + pixel_values = torch.stack(pixel_values) + pixel_values = pixel_values.to(memory_format=torch.contiguous_format).float() + + input_ids = tokenizer.pad( + { + "input_ids": input_ids + }, + padding="max_length", + max_length=tokenizer.model_max_length, + return_tensors="pt", + ).input_ids + + batch = { + "input_ids": input_ids, + "pixel_values": pixel_values, + } + return batch + + train_dataloader = torch.utils.data.DataLoader(train_dataset, + batch_size=args.train_batch_size, + shuffle=True, + collate_fn=collate_fn, + num_workers=1) + + # Scheduler and math around the number of training steps. + overrode_max_train_steps = False + num_update_steps_per_epoch = math.ceil(len(train_dataloader)) + if args.max_train_steps is None: + args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch + overrode_max_train_steps = True + + lr_scheduler = get_scheduler( + args.lr_scheduler, + optimizer=optimizer, + num_warmup_steps=args.lr_warmup_steps, + num_training_steps=args.max_train_steps, + ) + weight_dtype = torch.float32 + if args.mixed_precision == "fp16": + weight_dtype = torch.float16 + elif args.mixed_precision == "bf16": + weight_dtype = torch.bfloat16 + + # Move text_encode and vae to gpu. + # For mixed precision training we cast the text_encoder and vae weights to half-precision + # as these models are only used for inference, keeping weights in full precision is not required. + vae.to(get_current_device(), dtype=weight_dtype) + text_encoder.to(get_current_device(), dtype=weight_dtype) + + # We need to recalculate our total training steps as the size of the training dataloader may have changed. + num_update_steps_per_epoch = math.ceil(len(train_dataloader)) + if overrode_max_train_steps: + args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch + # Afterwards we recalculate our number of training epochs + args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch) + + # Train! + total_batch_size = args.train_batch_size * world_size + + logger.info("***** Running training *****", ranks=[0]) + logger.info(f" Num examples = {len(train_dataset)}", ranks=[0]) + logger.info(f" Num batches each epoch = {len(train_dataloader)}", ranks=[0]) + logger.info(f" Num Epochs = {args.num_train_epochs}", ranks=[0]) + logger.info(f" Instantaneous batch size per device = {args.train_batch_size}", ranks=[0]) + logger.info(f" Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}", ranks=[0]) + logger.info(f" Total optimization steps = {args.max_train_steps}", ranks=[0]) + + # Only show the progress bar once on each machine. + progress_bar = tqdm(range(args.max_train_steps), disable=not local_rank == 0) + progress_bar.set_description("Steps") + global_step = 0 + + torch.cuda.synchronize() + for epoch in range(args.num_train_epochs): + unet.train() + for step, batch in enumerate(train_dataloader): + torch.cuda.reset_peak_memory_stats() + # Move batch to gpu + for key, value in batch.items(): + batch[key] = value.to(get_current_device(), non_blocking=True) + + # Convert images to latent space + optimizer.zero_grad() + + latents = vae.encode(batch["pixel_values"].to(dtype=weight_dtype)).latent_dist.sample() + latents = latents * 0.18215 + + # Sample noise that we'll add to the latents + noise = torch.randn_like(latents) + bsz = latents.shape[0] + # Sample a random timestep for each image + timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (bsz,), device=latents.device) + timesteps = timesteps.long() + + # Add noise to the latents according to the noise magnitude at each timestep + # (this is the forward diffusion process) + noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps) + + # Get the text embedding for conditioning + encoder_hidden_states = text_encoder(batch["input_ids"])[0] + + # Predict the noise residual + model_pred = unet(noisy_latents, timesteps, encoder_hidden_states).sample + + # Get the target for loss depending on the prediction type + if noise_scheduler.config.prediction_type == "epsilon": + target = noise + elif noise_scheduler.config.prediction_type == "v_prediction": + target = noise_scheduler.get_velocity(latents, noise, timesteps) + else: + raise ValueError(f"Unknown prediction type {noise_scheduler.config.prediction_type}") + + if args.with_prior_preservation: + # Chunk the noise and model_pred into two parts and compute the loss on each part separately. + model_pred, model_pred_prior = torch.chunk(model_pred, 2, dim=0) + target, target_prior = torch.chunk(target, 2, dim=0) + + # Compute instance loss + loss = F.mse_loss(model_pred.float(), target.float(), reduction="none").mean([1, 2, 3]).mean() + + # Compute prior loss + prior_loss = F.mse_loss(model_pred_prior.float(), target_prior.float(), reduction="mean") + + # Add the prior loss to the instance loss. + loss = loss + args.prior_loss_weight * prior_loss + else: + loss = F.mse_loss(model_pred.float(), target.float(), reduction="mean") + + optimizer.backward(loss) + + optimizer.step() + lr_scheduler.step() + logger.info(f"max GPU_mem cost is {torch.cuda.max_memory_allocated()/2**20} MB", ranks=[0]) + # Checks if the accelerator has performed an optimization step behind the scenes + progress_bar.update(1) + global_step += 1 + logs = { + "loss": loss.detach().item(), + "lr": optimizer.param_groups[0]["lr"], + } # lr_scheduler.get_last_lr()[0]} + progress_bar.set_postfix(**logs) + + if global_step % args.save_steps == 0: + torch.cuda.synchronize() + torch_unet = get_static_torch_model(unet) + if local_rank == 0: + save_path = os.path.join(args.output_dir, f"checkpoint-{global_step}") + torch_unet = torch_unet.to(torch.float32) + torch_unet.save_attn_procs(save_path) + logger.info(f"Saving model checkpoint to {save_path}", ranks=[0]) + if global_step >= args.max_train_steps: + break + + torch.cuda.synchronize() + torch_unet = get_static_torch_model(unet) + + if local_rank == 0: + torch_unet = torch_unet.to(torch.float32) + torch_unet.save_attn_procs(save_path) + logger.info(f"Saving model checkpoint to {args.output_dir}", ranks=[0]) + + if args.push_to_hub: + repo.push_to_hub(commit_message="End of training", blocking=False, auto_lfs_prune=True) + + +if __name__ == "__main__": + args = parse_args() + main(args)