Landing: b6f7035408cc
Project / Subsystem
gcc / libgomp/documentation
Date
2026-06-09
Author
Tobias Burnus
Commit
b6f7035408cc08acef6f05a65d5da1d5f9e29a33
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libgomp/documentation
- patch_id
- —
- commit_hash
- b6f7035408cc08acef6f05a65d5da1d5f9e29a33
- source_type
- github
- headline
- Libgomp.texi: Mention ROCR_VISIBLE_DEVICES in context of USM
- tldr
- Documentation for libgomp now clarifies the use of `ROCR_VISIBLE_DEVICES` for unified shared memory with AMD GPUs.
- author
- Tobias Burnus
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • openmp
- • gpu
- • rocm
- • documentation
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-06-09T00:00:00.000Z
This commit updates the libgomp.texi documentation to better explain the use of unified shared memory (USM) with AMD GPUs, particularly on mixed systems. It re-adds a crucial half-sentence that was previously lost, clarifying that ROCR_VISIBLE_DEVICES serves as a workaround when not all AMD GPUs support USM, especially in configurations with integrated and discrete GPUs. The wording also now correctly differentiates between USM/SVM support and XNACK capabilities.