Possible values for top_p about gpt2

[keruiduo]

To be more specific:
For a given prompt, gpt2(prompt = prompt, batch_size = 1, model = "355M", total_tokens = 150, top_p = top_p, seed = 3) will give me the same output for top_p = 0.1, top_p = 0.5 and top_p = 0.8.
I get another output, always the same, for top_p = 1, top_p = 2, top_p = 10 and top_p = 100

Thanks a lot!