raise IndexError(f"Index {index} out of range for dataset of size {size}.")

[Sendren]

Describe the bug
运行这个脚本报错

35GiB

CUDA_VISIBLE_DEVICES=0
swift sft
--model '/mnt/workspace/Qwen2.5-7B-Instruct'
--train_type full
--dataset '/mnt/workspace/dataset/traindata-self.json'
--agent_template hermes
--torch_dtype bfloat16
--num_train_epochs 2
--per_device_train_batch_size 1
--per_device_eval_batch_size 1
--learning_rate 1e-5
--gradient_accumulation_steps 8
--eval_steps 100
--save_steps 100
--save_total_limit 2
--logging_steps 5
--max_length 8192
--save_only_model true
--packing true
--use_liger_kernel true
--output_dir output
--warmup_ratio 0.05
--attn_impl flash_attn
--dataloader_num_workers 4
--dataset_num_proc 16

Your hardware and system info
transformers 4.50.0.dev0

[Jintao-Huang]

#4119