question about attention_mask and pad_token_id

[zxilin01]

1. when i run generate.sh of openreview, it outputs:

The attention mask and the pad token id were not set. As a consequence, you may observe unexpected behavior. Please pass your input's attention_mask to obtain reliable results.
Setting pad_token_id to eos_token_id:50256 for open-end generation.

Is this right? Or I need to modify any parameter?

2. When running generate.sh of openreview, I found that the output of each epoch was like below. Why are there so many instances of 0.0? Is this normal? And the FID is also very large.

If I could receive your reply, I would greatly appreciate it！