Support ERNIE-Image (#1389)

* ernie-image pipeline

* ernie-image inference and training

* style fix

* ernie docs

* lowvram

* final style fix

* pr-review

* pr-fix round2

* set uniform training weight

* fix

* update lowvram docs

examples/ernie_image/model_training/lora/Ernie-Image-T2I.sh

@@ -0,0 +1,19 @@
+# Dataset: data/diffsynth_example_dataset/ernie_image/Ernie-Image-T2I/
+# Download: modelscope download --dataset DiffSynth-Studio/diffsynth_example_dataset --include "ernie_image/Ernie-Image-T2I/*" --local_dir ./data/diffsynth_example_dataset
+
+accelerate launch examples/ernie_image/model_training/train.py \
+  --dataset_base_path data/diffsynth_example_dataset/ernie_image/Ernie-Image-T2I \
+  --dataset_metadata_path data/diffsynth_example_dataset/ernie_image/Ernie-Image-T2I/metadata.csv \
+  --max_pixels 1048576 \
+  --dataset_repeat 50 \
+  --model_id_with_origin_paths "baidu/ERNIE-Image:transformer/diffusion_pytorch_model*.safetensors,baidu/ERNIE-Image:text_encoder/model.safetensors,baidu/ERNIE-Image:vae/diffusion_pytorch_model.safetensors" \
+  --learning_rate 1e-4 \
+  --num_epochs 5 \
+  --remove_prefix_in_ckpt "pipe.dit." \
+  --output_path "./models/train/Ernie-Image-T2I_lora" \
+  --lora_base_model "dit" \
+  --lora_target_modules "to_q,to_k,to_v,to_out.0" \
+  --lora_rank 32 \
+  --use_gradient_checkpointing \
+  --dataset_num_workers 8 \
+  --find_unused_parameters