Inlining functions of Unboxed vector consumes a lot of memory
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 30/100
- Issue type
- Bug
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- haskell
- Domain
- build-system, performance, testing
Research direction
Review the temporary change in #273, then build the vector-tests-O2 suite and inspect Tests.Vector.Property.testPolymorphicFunctions and Tests.Vector.Unboxed. Compare compilation memory on the affected GHC versions; done means the Unboxed tests build without excessive memory consumption and the temporary workaround is no longer needed.
Written by the indexing model from the issue text.
Description
For quite some time test suite vector-tests-O2 was unbuildable on CI for newer ghc versions 8.2 - 8.10 See:
The culprit was Unboxed vector, in particular compiling the full collection of Tests.Vector.Property.testPolymorphicFunctions properties restricted to Unboxed vector was consuming the most memory (~15Gb) (probably because it has the most number of properties). As a temporary fix #273 disables inlining of that collection of properties for Unboxed vector only. Compilation of Tests.Vector.Unboxed still takes the most amount of memory, but it is bearable ~1Gb
- Dominant language
- Haskell
- Stars
- 401
- Forks
- 145
- PR merge metrics
- No merged PRs in 30d
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