Skip to content

Perplexity Discrepancy Between Slow and Fast Paths #716

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
arman-kazemi opened this issue Apr 1, 2025 · 0 comments
Open

Perplexity Discrepancy Between Slow and Fast Paths #716

arman-kazemi opened this issue Apr 1, 2025 · 0 comments

Comments

@arman-kazemi
Copy link

Hi,
I noticed that if the fast-path is disabled for Mamba2, the perplexity of the model increases. I tested a 130M Mamba2 model and the PPL for wikitext measured with eleuther-eval-harness is 31 when using the fast-path and ~38 when not using the fast-path (torch_forward). Do you know why this happens?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant