fix bucketing

library/train_util.py

@@ -754,28 +754,41 @@ def load_image(self, image_path):
         img = np.array(image, np.uint8)
         return img
 
-    def trim_and_resize_if_required(self, subset: BaseSubset, image, reso, resized_size):
+    def trim_and_resize_if_required(self, subset: BaseSubset, image, reso, resized_size, cond_img = None):
         image_height, image_width = image.shape[0:2]
 
         if image_width != resized_size[0] or image_height != resized_size[1]:
             # リサイズする
             image = cv2.resize(image, resized_size, interpolation=cv2.INTER_AREA)  # INTER_AREAでやりたいのでcv2でリサイズ
+            if exists(cond_img):
+                cond_img = cv2.resize(cond_img, resized_size, interpolation=cv2.INTER_AREA)
 
         image_height, image_width = image.shape[0:2]
         if image_width > reso[0]:
             trim_size = image_width - reso[0]
             p = trim_size // 2 if not subset.random_crop else random.randint(0, trim_size)
             # print("w", trim_size, p)
             image = image[:, p : p + reso[0]]
+            if exists(cond_img):
+                cond_img = cond_img[:, p : p + reso[0]]
         if image_height > reso[1]:
             trim_size = image_height - reso[1]
             p = trim_size // 2 if not subset.random_crop else random.randint(0, trim_size)
             # print("h", trim_size, p)
             image = image[p : p + reso[1]]
+            if exists(cond_img):
+                cond_img = cond_img[p : p + reso[1]]
 
         assert (
             image.shape[0] == reso[1] and image.shape[1] == reso[0]
         ), f"internal error, illegal trimmed size: {image.shape}, {reso}"
+
+        if exists(cond_img):
+            assert (
+                cond_img.shape[0] == reso[1] and cond_img.shape[1] == reso[0]
+            ), f"internal error, illegal trimmed size: {cond_img.shape}, {reso}"
+            return image, cond_img
+
         return image
 
     def is_latent_cacheable(self):
@@ -1617,6 +1630,8 @@ def __getitem__(self, index):
             subset = self.image_to_subset[image_key]
             loss_weights.append(1.0)
 
+            assert hasattr(image_info, "cond_img_path"), f"conditioning image path is not found: {image_info.absolute_path}"
+
             # image/latentsを処理する
             if image_info.latents is not None:  # cache_latents=Trueの場合
                 latents = image_info.latents if not subset.flip_aug or random.random() < 0.5 else image_info.latents_flipped
@@ -1628,10 +1643,11 @@ def __getitem__(self, index):
             else:
                 # 画像を読み込み、必要ならcropする
                 img = self.load_image(image_info.absolute_path)
+                cond_img = self.load_image(image_info.cond_img_path)
                 im_h, im_w = img.shape[0:2]
 
                 if self.enable_bucket:
-                    img = self.trim_and_resize_if_required(subset, img, image_info.bucket_reso, image_info.resized_size)
+                    img, cond_img = self.trim_and_resize_if_required(subset, img, image_info.bucket_reso, image_info.resized_size, cond_img=cond_img)
                 else:
                     im_h, im_w = img.shape[0:2]
                     assert (
@@ -1649,41 +1665,18 @@ def __getitem__(self, index):
             images.append(image)
             latents_list.append(latents)
 
-            caption = self.process_caption(subset, image_info.caption)
-            if self.XTI_layers:
-                caption_layer = []
-                for layer in self.XTI_layers:
-                    token_strings_from = " ".join(self.token_strings)
-                    token_strings_to = " ".join([f"{x}_{layer}" for x in self.token_strings])
-                    caption_ = caption.replace(token_strings_from, token_strings_to)
-                    caption_layer.append(caption_)
-                captions.append(caption_layer)
-            else:
-                captions.append(caption)
-            if not self.token_padding_disabled:  # this option might be omitted in future
-                if self.XTI_layers:
-                    token_caption = self.get_input_ids(caption_layer)
-                else:
-                    token_caption = self.get_input_ids(caption)
-                input_ids_list.append(token_caption)
-
-            assert hasattr(image_info, "cond_img_path"), f"conditioning image path is not found: {image_info.absolute_path}"
-
-            cond_img = self.load_image(image_info.cond_img_path)
-            if self.enable_bucket:
-                cond_img = self.trim_and_resize_if_required(subset, cond_img, image_info.bucket_reso, image_info.resized_size)
             cond_img = self.conditioning_image_transforms(cond_img)
             conditioning_images.append(cond_img)
 
+            caption = self.process_caption(subset, image_info.caption)
+            captions.append(caption)
+            token_caption = self.get_input_ids(caption)
+            input_ids_list.append(token_caption)
+
         example = {}
         example["loss_weights"] = torch.FloatTensor(loss_weights)
 
-        if self.token_padding_disabled:
-            # padding=True means pad in the batch
-            example["input_ids"] = self.tokenizer(captions, padding=True, truncation=True, return_tensors="pt").input_ids
-        else:
-            # batch processing seems to be good
-            example["input_ids"] = torch.stack(input_ids_list)
+        example["input_ids"] = torch.stack(input_ids_list)
 
         if images[0] is not None:
             images = torch.stack(images)

train_controlnet.py

@@ -141,7 +141,6 @@ def train(args):
             controlnet = ControlNetModel.from_pretrained(filename)
 
 
-
     # モデルに xformers とか memory efficient attention を組み込む
     train_util.replace_unet_modules(unet, args.mem_eff_attn, args.xformers)
 
@@ -168,11 +167,11 @@ def train(args):
         controlnet.enable_gradient_checkpointing()
 
     # 学習に必要なクラスを準備する
-    print("prepare optimizer, data loader etc.")
+    accelerator.print("prepare optimizer, data loader etc.")
 
     trainable_params = controlnet.parameters()
 
-    optimizer_name, optimizer_args, optimizer = train_util.get_optimizer(
+    _, _, optimizer = train_util.get_optimizer(
         args, trainable_params
     )
 
@@ -198,10 +197,9 @@ def train(args):
             / accelerator.num_processes
             / args.gradient_accumulation_steps
         )
-        if is_main_process:
-            print(
-                f"override steps. steps for {args.max_train_epochs} epochs is / 指定エポックまでのステップ数: {args.max_train_steps}"
-            )
+        accelerator.print(
+            f"override steps. steps for {args.max_train_epochs} epochs is / 指定エポックまでのステップ数: {args.max_train_steps}"
+        )
 
     # データセット側にも学習ステップを送信
     train_dataset_group.set_max_train_steps(args.max_train_steps)
@@ -216,7 +214,7 @@ def train(args):
         assert (
             args.mixed_precision == "fp16"
         ), "full_fp16 requires mixed precision='fp16' / full_fp16を使う場合はmixed_precision='fp16'を指定してください。"
-        print("enable full fp16 training.")
+        accelerator.print("enable full fp16 training.")
         controlnet.to(weight_dtype)
 
     # acceleratorがなんかよろしくやってくれるらしい
@@ -258,23 +256,21 @@ def train(args):
 
     # 学習する
     # TODO: find a way to handle total batch size when there are multiple datasets
-
-    if is_main_process:
-        print("running training / 学習開始")
-        print(
-            f"  num train images * repeats / 学習画像の数×繰り返し回数: {train_dataset_group.num_train_images}"
-        )
-        print(f"  num reg images / 正則化画像の数: {train_dataset_group.num_reg_images}")
-        print(f"  num batches per epoch / 1epochのバッチ数: {len(train_dataloader)}")
-        print(f"  num epochs / epoch数: {num_train_epochs}")
-        print(
-            f"  batch size per device / バッチサイズ: {', '.join([str(d.batch_size) for d in train_dataset_group.datasets])}"
-        )
-        # print(f"  total train batch size (with parallel & distributed & accumulation) / 総バッチサイズ（並列学習、勾配合計含む）: {total_batch_size}")
-        print(
-            f"  gradient accumulation steps / 勾配を合計するステップ数 = {args.gradient_accumulation_steps}"
-        )
-        print(f"  total optimization steps / 学習ステップ数: {args.max_train_steps}")
+    accelerator.print("running training / 学習開始")
+    accelerator.print(
+        f"  num train images * repeats / 学習画像の数×繰り返し回数: {train_dataset_group.num_train_images}"
+    )
+    accelerator.print(f"  num reg images / 正則化画像の数: {train_dataset_group.num_reg_images}")
+    accelerator.print(f"  num batches per epoch / 1epochのバッチ数: {len(train_dataloader)}")
+    accelerator.print(f"  num epochs / epoch数: {num_train_epochs}")
+    accelerator.print(
+        f"  batch size per device / バッチサイズ: {', '.join([str(d.batch_size) for d in train_dataset_group.datasets])}"
+    )
+    # print(f"  total train batch size (with parallel & distributed & accumulation) / 総バッチサイズ（並列学習、勾配合計含む）: {total_batch_size}")
+    accelerator.print(
+        f"  gradient accumulation steps / 勾配を合計するステップ数 = {args.gradient_accumulation_steps}"
+    )
+    accelerator.print(f"  total optimization steps / 学習ステップ数: {args.max_train_steps}")
 
     progress_bar = tqdm(
         range(args.max_train_steps),
@@ -303,11 +299,11 @@ def train(args):
     del train_dataset_group
 
     # function for saving/removing
-    def save_model(ckpt_name, model, steps, epoch_no, force_sync_upload=False):
+    def save_model(ckpt_name, model, force_sync_upload=False):
         os.makedirs(args.output_dir, exist_ok=True)
         ckpt_file = os.path.join(args.output_dir, ckpt_name)
 
-        print(f"\nsaving checkpoint: {ckpt_file}")
+        accelerator.print(f"\nsaving checkpoint: {ckpt_file}")
 
         state_dict = model_util.convert_controlnet_state_dict_to_sd(model.state_dict())
 
@@ -332,13 +328,13 @@ def save_model(ckpt_name, model, steps, epoch_no, force_sync_upload=False):
     def remove_model(old_ckpt_name):
         old_ckpt_file = os.path.join(args.output_dir, old_ckpt_name)
         if os.path.exists(old_ckpt_file):
-            print(f"removing old checkpoint: {old_ckpt_file}")
+            accelerator.print(f"removing old checkpoint: {old_ckpt_file}")
             os.remove(old_ckpt_file)
 
     # training loop
     for epoch in range(num_train_epochs):
         if is_main_process:
-            print(f"\nepoch {epoch+1}/{num_train_epochs}")
+            accelerator.print(f"\nepoch {epoch+1}/{num_train_epochs}")
         current_epoch.value = epoch + 1
 
         for step, batch in enumerate(train_dataloader):
@@ -470,7 +466,7 @@ def remove_model(old_ckpt_name):
                             args, "." + args.save_model_as, global_step
                         )
                         save_model(
-                            ckpt_name, unwrap_model(controlnet), global_step, epoch
+                            ckpt_name, unwrap_model(controlnet),
                         )
 
                         if args.save_state:
@@ -520,7 +516,7 @@ def remove_model(old_ckpt_name):
                 ckpt_name = train_util.get_epoch_ckpt_name(
                     args, "." + args.save_model_as, epoch + 1
                 )
-                save_model(ckpt_name, unwrap_model(controlnet), global_step, epoch + 1)
+                save_model(ckpt_name, unwrap_model(controlnet))
 
                 remove_epoch_no = train_util.get_remove_epoch_no(args, epoch + 1)
                 if remove_epoch_no is not None:
@@ -561,7 +557,7 @@ def remove_model(old_ckpt_name):
     if is_main_process:
         ckpt_name = train_util.get_last_ckpt_name(args, "." + args.save_model_as)
         save_model(
-            ckpt_name, controlnet, global_step, num_train_epochs, force_sync_upload=True
+            ckpt_name, controlnet, force_sync_upload=True
         )
 
         print("model saved.")