lance-format/lance

Make a SVD implementation in Rust and remove the dependency of openblas

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#984 opened on Jun 15, 2023

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A-indexenhancementgood first issuehelp wantedrust

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Description

Problem Statement

openblas gives us many troubles to build the package in different systems. We only use blas to compute SVD in OPQ now. Because it is only used during indexing, SVD / blas is not performance critical piece of code. It should be safe to remove them.

Desired behavior

We implement SVD in rust, and get rid of openblas-src as dependency.

Contributor guide

Research direction
Study existing SVD implementations in Rust (e.g., nalgebra's SVD). Implement a basic SVD using Jacobi or divide and conquer algorithm. Ensure it matches the same output as the current openblas based SVD. Remove the openblas src dependency and update Cargo.toml.
Tech stack
rust
Domain
backenddataperformance
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustLinear algebra
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50