deepseek-ai/DeepGEMM
1
0
Fork 0
mirror of https://github.com/deepseek-ai/DeepGEMM.git synced 2026-11-05 00:47:26 +00:00
Code Issues 162 Projects Packages Wiki Activity

[GH-ISSUE #184] performance optimizations on CUDA 12.9? #104

New issue
Closed
opened 2026-10-26 21:12:40 +00:00 by bsakaguchi · 1 comment
bsakaguchi commented 2026-10-26 21:12:40 +00:00
Owner
Copy link

Originally created by @crischeng on GitHub (Sep 4, 2025).
Original GitHub issue: https://github.com/deepseek-ai/DeepGEMM/issues/184

What performance optimizations were added in CUDA 12.9?
I run test_fp8.py in the H20-96G using CUDA 12.8 and CUDA 12.9, the performance was consistent.
DeepGemm commit f85ec649d7
cuda 12.8:

Image

cuda12.9:

Image
Originally created by @crischeng on GitHub (Sep 4, 2025). Original GitHub issue: https://github.com/deepseek-ai/DeepGEMM/issues/184 What performance optimizations were added in CUDA 12.9? I run test_fp8.py in the H20-96G using CUDA 12.8 and CUDA 12.9, the performance was consistent. DeepGemm commit f85ec649d76846552cfd637b6c99fb9c985fd9eb cuda 12.8: <img width="800" height="515" alt="Image" src="https://github.com/user-attachments/assets/19bee47d-935a-44ed-9350-a19885482e2b" /> cuda12.9: <img width="897" height="488" alt="Image" src="https://github.com/user-attachments/assets/a1166cb0-da5a-407e-9d42-0cc4664f09ad" />
bsakaguchi commented 2026-10-26 21:12:43 +00:00
Author
Owner
Copy link

@LyricZhao commented on GitHub (Sep 10, 2025):

NVCC in CUDA 12.9 has an optimization for better tensor core/CUDA core overlapping. This will affect H800 (1979 peak TFLOPS) devices more. I guess as H20 has much lower peak TFLOPS, so it has no effect.

<!-- gh-comment-id:3274213868 --> @LyricZhao commented on GitHub (Sep 10, 2025): NVCC in CUDA 12.9 has an optimization for better tensor core/CUDA core overlapping. This will affect H800 (1979 peak TFLOPS) devices more. I guess as H20 has much lower peak TFLOPS, so it has no effect.
Sign in to join this conversation.
No Branch/Tag specified
Branches Tags
main
public-sync-20261014
0930-release
nv_dev
fix-mega-moe-fence
public-release-2609
public-release-2607
public-release-2606
mega-update
public-release-260416
ko3n1g/ci/build-wheels
nv_dev_f8e8fb5
nv_dev_950d31a
nv_dev_67fc648
nv_dev_c491439
nv_dev_4ff3f54
v2.1.1.post3
v2.1.1.post2
v2.1.1.post1
v2.1.1
v2.1.0
Labels
Clear labels   
pull-request
Mirrored from GitHub Pull Request

No labels
pull-request
Milestone
Clear milestone
No items
No milestone
Projects
Clear projects
No items
No project
Assignees
Clear assignees
No assignees
1 participant
Notifications
Due date
The due date is invalid or out of range. Please use the format "yyyy-mm-dd".

No due date set.

Dependencies

No dependencies set.

Reference
deepseek-ai/DeepGEMM#104
No description provided.