Improve performance of functions by vectorization
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component/compute
good first issue
help wanted
type/enhancement
- Dominant language
- C++
- Stars
- 1k
- Forks
- 423
- Avg merge
- 1d 15h
- Merged PRs (30d)
- 24
Description
Enhancement
we can use vectorization to improve the performance of some functions:
- arithmetic operation
- comparsion
- bit operation
- ...
Reference
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading the linked TiFlash vectorization article and the referenced ClickHouse FunctionUnaryArithmetic.h implementation. Define which arithmetic, comparison, and bit-operation functions are in scope, then measure performance before and after each selected optimization; the issue is done when the agreed functions are vectorized and their improvements are verified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- performance
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100