change directory

examples/images/dreambooth/train_dreambooth_colossalai.py

@@ -4,6 +4,7 @@ import math
 import os
 from pathlib import Path
 from typing import Optional
+import shutil
 
 import torch
 import torch.nn.functional as F
@@ -21,9 +22,12 @@ 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 import HybridAdam
 from colossalai.utils import get_current_device
-from colossalai.zero import ColoInitContext, GeminiAdamOptimizer
+from colossalai.zero import ColoInitContext
 from colossalai.zero.gemini import get_static_torch_model
+from colossalai.booster import Booster
+from colossalai.booster.plugin import GeminiPlugin, LowLevelZeroPlugin, TorchDDPPlugin
 
 disable_existing_loggers()
 logger = get_dist_logger()
@@ -58,6 +62,13 @@ def parse_args(input_args=None):
         required=True,
         help="Path to pretrained model or model identifier from huggingface.co/models.",
     )
+    parser.add_argument(
+        "--externel_unet_path",
+        type=str,
+        default=None,
+        required=False,
+        help="Path to the externel unet model.",
+    )
     parser.add_argument(
         "--revision",
         type=str,
@@ -193,6 +204,12 @@ def parse_args(input_args=None):
         default=None,
         help="The name of the repository to keep in sync with the local `output_dir`.",
     )
+    parser.add_argument('-p',
+                        '--plugin',
+                        type=str,
+                        default='torch_ddp',
+                        choices=['torch_ddp', 'torch_ddp_fp16', 'gemini', 'low_level_zero'],
+                        help="plugin to use")
     parser.add_argument(
         "--logging_dir",
         type=str,
@@ -339,18 +356,6 @@ def get_full_repo_name(model_id: str, organization: Optional[str] = None, token:
         return f"{organization}/{model_id}"
 
 
-# Gemini + ZeRO DDP
-def gemini_zero_dpp(model: torch.nn.Module, placement_policy: str = "auto"):
-    from colossalai.nn.parallel import GeminiDDP
-
-    model = GeminiDDP(model,
-                      device=get_current_device(),
-                      placement_policy=placement_policy,
-                      pin_memory=True,
-                      search_range_mb=64)
-    return model
-
-
 def main(args):
     if args.seed is None:
         colossalai.launch_from_torch(config={})
@@ -392,7 +397,7 @@ def main(args):
                 images = pipeline(example["prompt"]).images
 
                 for i, image in enumerate(images):
-                    hash_image = hashlib.sha1(image.tobytes()).hexdigest()
+                    hash_image = hashlib.sha256(image.tobytes()).hexdigest()
                     image_filename = class_images_dir / f"{example['index'][i] + cur_class_images}-{hash_image}.jpg"
                     image.save(image_filename)
 
@@ -452,12 +457,18 @@ def main(args):
         revision=args.revision,
     )
 
-    logger.info(f"Loading UNet2DConditionModel from {args.pretrained_model_name_or_path}", ranks=[0])
-    with ColoInitContext(device=get_current_device()):
+
+    if args.externel_unet_path is None:
+        logger.info(f"Loading UNet2DConditionModel from {args.pretrained_model_name_or_path}", ranks=[0])
         unet = UNet2DConditionModel.from_pretrained(args.pretrained_model_name_or_path,
-                                                    subfolder="unet",
-                                                    revision=args.revision,
-                                                    low_cpu_mem_usage=False)
+                                                subfolder="unet",
+                                                revision=args.revision,
+                                                low_cpu_mem_usage=False)
+    else:
+        logger.info(f"Loading UNet2DConditionModel from {args.externel_unet_path}", ranks=[0])
+        unet = UNet2DConditionModel.from_pretrained(args.externel_unet_path,
+                                                revision=args.revision,
+                                                low_cpu_mem_usage=False)
 
     vae.requires_grad_(False)
     text_encoder.requires_grad_(False)
@@ -468,10 +479,22 @@ def main(args):
     if args.scale_lr:
         args.learning_rate = args.learning_rate * args.train_batch_size * world_size
 
-    unet = gemini_zero_dpp(unet, args.placement)
+    # Use Booster API to use Gemini/Zero with ColossalAI
+
+    booster_kwargs = {}
+    if args.plugin == 'torch_ddp_fp16':
+        booster_kwargs['mixed_precision'] = 'fp16'
+    if args.plugin.startswith('torch_ddp'):
+        plugin = TorchDDPPlugin()
+    elif args.plugin == 'gemini':
+        plugin = GeminiPlugin(placement_policy='cuda', strict_ddp_mode=True, initial_scale=2 ** 5)
+    elif args.plugin == 'low_level_zero':
+        plugin = LowLevelZeroPlugin(initial_scale=2 ** 5)
+
+    booster = Booster(plugin=plugin, **booster_kwargs)
 
     # config optimizer for colossalai zero
-    optimizer = GeminiAdamOptimizer(unet, lr=args.learning_rate, initial_scale=2**5, clipping_norm=args.max_grad_norm)
+    optimizer = HybridAdam(unet.parameters(), 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")
@@ -554,6 +577,8 @@ def main(args):
     # Afterwards we recalculate our number of training epochs
     args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
 
+    unet, optimizer, _, _, lr_scheduler = booster.boost(unet, optimizer, lr_scheduler=lr_scheduler)
+
     # Train!
     total_batch_size = args.train_batch_size * world_size
 
@@ -642,36 +667,24 @@ def main(args):
 
             if global_step % args.save_steps == 0:
                 torch.cuda.synchronize()
-                torch_unet = get_static_torch_model(unet)
                 if local_rank == 0:
-                    pipeline = DiffusionPipeline.from_pretrained(
-                        args.pretrained_model_name_or_path,
-                        unet=torch_unet,
-                        revision=args.revision,
-                    )
                     save_path = os.path.join(args.output_dir, f"checkpoint-{global_step}")
-                    pipeline.save_pretrained(save_path)
+                    booster.save_model(unet, os.path.join(save_path, "diffusion_pytorch_model.bin"))
+                    if not os.path.exists(os.path.join(save_path, "config.json")):
+                        shutil.copy(os.path.join(args.pretrained_model_name_or_path, "unet/config.json"), save_path)
                     logger.info(f"Saving model checkpoint to {save_path}", ranks=[0])
             if global_step >= args.max_train_steps:
                 break
-
     torch.cuda.synchronize()
-    unet = get_static_torch_model(unet)
 
+    booster.save_model(unet, os.path.join(args.output_dir, "diffusion_pytorch_model.bin"))
+    logger.info(f"Saving model checkpoint to {args.output_dir} on rank {local_rank}")
     if local_rank == 0:
-        pipeline = DiffusionPipeline.from_pretrained(
-            args.pretrained_model_name_or_path,
-            unet=unet,
-            revision=args.revision,
-        )
-
-        pipeline.save_pretrained(args.output_dir)
-        logger.info(f"Saving model checkpoint to {args.output_dir}", ranks=[0])
-
+        if not os.path.exists(os.path.join(args.output_dir, "config.json")):
+            shutil.copy(os.path.join(args.pretrained_model_name_or_path, "unet/config.json"), args.output_dir)
         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)