Chapel Wish List

[ronawho]

This is just a meta issue to link to bugs/features that are important to Chapel so that it's easy to see at a glance the things we care about.

High Priority:

• [ ] Tune distrib scheduler performance (#39)

Medium Priority:

• [ ] Ability to call a function on each worker thread (#52)
• [ ] Support different yielding policies (#140)
• [ ] Improve "vector" task spawn performance (#47)

Low Priority:

• [ ] Deschedule sleeping qthreads (#43)
• [ ] Improve performance of "thread-ring" benchmark (#48)
• [ ] Speed up build times (#44)

---

Done:

• [x] Sleep syscall implementation is buggy (#37)
• [x] Have idle workers use a hybrid spin/condwait scheme (#38)
• [x] Add support for custom memory allocators (#40)
• [x] Improve hwloc link args configuration (#56)
• [x] Add ability to "reset" task spawn order (#42)
• [x] Sync vars serialize execution (#63)
• [x] Add ability to specify explicit CPU bindings (#46)

No longer needed:

• Improve Cygwin portability [#49]
• Cache guard pages (#45)
• Improve startup times when topo=hwloc (#41)