Support interop with active green contexts#853
Draft
caugonnet wants to merge 2 commits intoNVIDIA:mainfrom
Draft
Support interop with active green contexts#853caugonnet wants to merge 2 commits intoNVIDIA:mainfrom
caugonnet wants to merge 2 commits intoNVIDIA:mainfrom
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Teach the CUDA runtime to borrow externally activated green-context-derived execution contexts while continuing to reject ordinary non-primary contexts, and scope loaded kernels to the active execution context so resets do not reuse stale handles. Protect destructive reset/close paths from touching borrowed contexts, add CUDA 13 interop coverage, and document the supported phase-1 behavior. Made-with: Cursor
Keep the branch focused on the implementation and tests by dropping the temporary support summary from the committed changes. Made-with: Cursor
leofang
reviewed
Apr 15, 2026
Comment on lines
+88
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+99
| def _locate_nvidia_header_directory(name): | ||
| locator = getattr(pathfinder, "locate_nvidia_header_directory", None) | ||
| if locator is None: | ||
| locator = getattr(pathfinder, "find_nvidia_header_directory", None) | ||
| if locator is None: | ||
| return None | ||
| located = locator(name) | ||
| if located is None: | ||
| return None | ||
| if hasattr(located, "abs_path") and hasattr(located, "found_via"): | ||
| return located | ||
| return _header_dir_info("cuda.pathfinder", located) |
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Q: Did you do this because you did not want to raise the lower bound of cuda-pathfinder (to the version that offers these APIs?)
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Teach the CUDA runtime to borrow externally activated green-context-derived execution contexts while continuing to reject ordinary non-primary contexts, and scope loaded kernels to the active execution context so resets do not reuse stale handles. Protect destructive reset/close paths from touching borrowed contexts, add CUDA 13 interop coverage, and document the supported phase-1 behavior.