Are there any matrix-free solvers?

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
rust
Domain
data

Research direction

The issue names no files, tests, or entry points. Start by reviewing the existing solver APIs and project documentation to determine whether matrix-free support already exists; the desired scope and completion criteria still need maintainer clarification.

Written by the indexing model from the issue text.

Description

new feature

Hi! Does ndarray support any matrix-free solvers?

In matrix-free solver, instead of x = solve(A, b), we run x = solve(f, b), where f is a function f(y) = Ay that can evaluate the product of A and any vector. This is useful in some situations where we don't need to store the entire matrix. https://en.wikipedia.org/wiki/Matrix-free_methods

This is Eigen's version: https://eigen.tuxfamily.org/dox/group__MatrixfreeSolverExample.html

Dominant language
Rust
Stars
452
Forks
95
PR merge metrics
No merged PRs in 30d

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