[Tracker] XNNPACK BF16 Support
Open
@JakeStevens is already working on this.
Since Jul 22, 2026.
- Dominant language
- Python
- Stars
- 5k
- Forks
- 1.2k
- Avg merge
- 2d 10h
- Merged PRs (30d)
- 581
Description
This is the top-level tracking task for support for the BF16 dtype in the XNNPACK delegate. Most of the work is upstream in XNNPACK itself, but we will need to do a small amount of wiring up in the ET delegate once the upstream changes are complete.
Task List:
- Support BF16 for GEMMs, element-wise ops, data movement, and reduction ops in upstream XNNPACK.
- Tracker: https://github.com/google/XNNPACK/issues/9728
- Note that the majority of the work is tracked in the above task.
- #20128
- #20129
- #20130
- #20132
- #20133
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Assessment
This issue has not been assessed yet.