[Feature] Support sliding window for triton attention backend #6161
Description
Checklist
- 1. If the issue you raised is not a feature but a question, please raise a discussion at https://github.com/sgl-project/sglang/discussions/new/choose Otherwise, it will be closed.
- 2. Please use English, otherwise it will be closed.
Motivation
Currently in blackwell environment, only triton attention backend is stable for running. We need sliding window feature to run gemma 3 model, but triton backend doesn't support it.