Are model checkpoints available? e.g., GPT2 1.5B + Pre-trained on AMPS

I was interested in (at least the GPT2 1.5B) pre-trained on AMPS from the paper's table:

![Screenshot 2024-09-04 at 10 35 03 AM](https://github.com/user-attachments/assets/56577e4b-45cc-483d-a5fc-adc1c12260b0)

I was wondering, are those model ckpts avaiable?

Thanks!