[UIL] Fix triton LSA test library loading and allocator robustness#484
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Pull request overview
This PR improves reliability of the Triton-based LSA (Local Shared Access) test by making FlagCX shared library discovery and the CUDA pluggable allocator setup more robust, reducing failures due to missing/incorrect library paths and partially-initialized wrapper objects.
Changes:
- Add
FLAGCX_LIB_PATHsupport and cache the compiled CUDA pluggable allocator +torch.cuda.MemPool, with clearer failure signaling in the LSA test. - Add default
libflagcx.sodiscovery logic inFLAGCXLibrary(via$FLAGCX_PATHor repo-localbuild/lib) and harden destructor cleanup to avoid crashes on partial initialization. - Adjust shared library caching in
FLAGCXLibraryto reuse loadedctypes.CDLLinstances per path.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| plugin/interservice/test_triton_lsa.py | Adds configurable linker path for libflagcx.so, caches allocator/mempool compilation results, and fails fast if the pool can’t be initialized. |
| plugin/interservice/flagcx_wrapper.py | Adds default library search logic and improves robustness around library loading and cleanup. |
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aoyulong
approved these changes
Jun 3, 2026
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PR Category
UIL
PR Types
Bug Fixes
PR Description
This PR improves reliability of the Triton-based LSA (Local Shared Access) test by making FlagCX shared library discovery and the CUDA pluggable allocator setup more robust, reducing failures due to missing/incorrect library paths and partially-initialized wrapper objects.