Skip to content
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.

Sign up for GitHub

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

Jump to bottom

Impact of Register Spills on FA3 Kernel Performance #1410

Open
ziyuhuang123 opened this issue Dec 24, 2024 · 0 comments
Open

Impact of Register Spills on FA3 Kernel Performance #1410

ziyuhuang123 opened this issue Dec 24, 2024 · 0 comments

Comments

@ziyuhuang123
Copy link

I observed a significant amount of register spills in FA3 kernels, such as:

40 bytes stack frame, 96 bytes spill stores, 132 bytes spill loads
ptxas info : Used 168 registers, 40 bytes cumulative stack size

I'm unsure if these spills severely impact kernel performance. Is reducing spills the key to improving performance?
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@ziyuhuang123