GHC issueshttps://gitlab.haskell.org/ghc/ghc/-/issues2023-12-07T13:38:37Zhttps://gitlab.haskell.org/ghc/ghc/-/issues/7330Data Parallel Haskell (DPH) isn't usable yet.2023-12-07T13:38:37ZbenlData Parallel Haskell (DPH) isn't usable yet.This is a place holder ticket for people that try to use DPH and find problems or missing features. DPH is still deeply experimental, and we don't expect you to be able to do anything useful with it yet.
However, it may work well enough...This is a place holder ticket for people that try to use DPH and find problems or missing features. DPH is still deeply experimental, and we don't expect you to be able to do anything useful with it yet.
However, it may work well enough to compile and run programs, depending on your particular example. The compiled executables are likely to work, but they will be very slow (like 10 - 100x slower than they should be). If you'd like to try DPH out anyway then feel free to give it a shot. Further questions and comments should be directed to benl\@ouroborus.net. No need to open a ticket here in the GHC trac.
<details><summary>Trac metadata</summary>
| Trac field | Value |
| ---------------------- | -------------- |
| Version | 7.6.1 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture | |
</details>
<!-- {"blocked_by":[],"summary":"Data Parallel Haskell (DPH) isn't usable yet.","status":"New","operating_system":"","component":"Compiler","related":[],"milestone":"","resolution":"Unresolved","owner":{"tag":"OwnedBy","contents":"benl"},"version":"7.6.1","keywords":[],"differentials":[],"test_case":"","architecture":"","cc":[""],"type":"FeatureRequest","description":"This is a place holder ticket for people that try to use DPH and find problems or missing features. DPH is still deeply experimental, and we don't expect you to be able to do anything useful with it yet.\r\n\r\nHowever, it may work well enough to compile and run programs, depending on your particular example. The compiled executables are likely to work, but they will be very slow (like 10 - 100x slower than they should be). If you'd like to try DPH out anyway then feel free to give it a shot. Further questions and comments should be directed to benl@ouroborus.net. No need to open a ticket here in the GHC trac.\r\n","type_of_failure":"OtherFailure","blocking":[]} -->⊥benlbenlhttps://gitlab.haskell.org/ghc/ghc/-/issues/19951`ParallelArrays` extension doesn't seem to do anything2024-03-21T05:43:42ZTheMatten`ParallelArrays` extension doesn't seem to do anythingOn GHC 9.0.1, `ParallelArrays` doesn't seem to do anything. Searching through codebase (https://github.com/ghc/ghc/search?q=ParallelArrays&type=code), it seems like related functionality was dropped few years ago (https://github.com/ghc/...On GHC 9.0.1, `ParallelArrays` doesn't seem to do anything. Searching through codebase (https://github.com/ghc/ghc/search?q=ParallelArrays&type=code), it seems like related functionality was dropped few years ago (https://github.com/ghc/ghc/commit/faee23bb69ca813296da484bc177f4480bcaee9f), but the flag itself persisted. Is that intentional or was it simply missed?