EPIC: Support free-threading build #350

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1. github-actions

   added

   triageNeeds the team's attentionNeeds the team's attention

   on Jan 3, 2025
2. leofang

   added sub-issues on Jan 3, 2025

   • Add a build/release process to support 2 build flavors #132
   • RFC: Enable per-thread default stream in free-threading builds #133
   • Document about the free-threading (cp313t) build #134
3. leofang

   added

   P1Medium priority - Should doMedium priority - Should do

   cuda.bindingsEverything related to the cuda.bindings moduleEverything related to the cuda.bindings module

   cuda.coreEverything related to the cuda.core moduleEverything related to the cuda.core module

   EPICSoul of a releaseSoul of a release

   and removed

   triageNeeds the team's attentionNeeds the team's attention

   on Jan 3, 2025
4. leofang

   added

   triageNeeds the team's attentionNeeds the team's attention

   on Jan 18, 2025
5. leofang

   added

   blockedThis task is currently blocked by other tasksThis task is currently blocked by other tasks

   on Apr 23, 2025
6. leofang commented on Apr 23, 2025

   

   leofang

   on Apr 23, 2025

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   set to blocked because we need Cython 3.1.0
7. leofang commented on May 13, 2025

   

   leofang

   on May 13, 2025

   MemberAuthor

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   Cython 3.1.0 is out, this is unblocked.
8. leofang

   removed

   blockedThis task is currently blocked by other tasksThis task is currently blocked by other tasks

   on May 13, 2025
9. leofang

   added this to the cuda-python parking lot milestone on May 13, 2025
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11. leofang

    added

    P0High priority - Must do!High priority - Must do!

    and removed

    triageNeeds the team's attentionNeeds the team's attention

    on Oct 2, 2025
12. rparolin

    modified the milestones: cuda-python 13.0.2 & 12.9.3, cuda-python parking lot on Oct 9, 2025
13. rparolin commented on Oct 14, 2025

    

    rparolin

    on Oct 14, 2025

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    @cpcloud I'd suggest we mark this as a P1 and return it to the backlog. Sg?
14. cpcloud commented on Oct 14, 2025

    

    cpcloud

    on Oct 14, 2025

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    Yep, sounds good.
15. rparolin

    added

    P1Medium priority - Should doMedium priority - Should do

    and removed

    P0High priority - Must do!High priority - Must do!

    on Oct 15, 2025
16. leofang

    added a sub-issue on Dec 16, 2025

    • Address known thread-safety issues in cuda.core/look into call_once pattern #1389
17. rparolin

    removed this from the cuda.bindings backlog milestone on Apr 2, 2026
18. rgommers commented on May 12, 2026

    

    rgommers

    on May 12, 2026

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    Ok, so it looks like llvmlite doesn't have a free-threading build, so the tests that require it won't run until that gets shipped. I'll disable those only on the FT build.

    llvmlite and numba now have support and wheels for 3.14t, so this workaround can be removed.
19. kkraus14

    unassigned

    cpcloud

    on May 14, 2026
20. leofang

    added a sub-issue on May 19, 2026

    • Use pytest-run-parallel to test thread safety #2114
21. rparolin

    assigned

    seberg

    on Jul 31, 2026
22. rparolin

    added this to the cuda.bindings next milestone on Aug 19, 2026