JuliaArrays / JuliaArrays/ArrayInterface.jl
[Feature request] `compatible_multiplicative_operand` interface
Nobody has claimed this yet.
- Dominant language
- Julia
- Stars
- 140
- Forks
- 44
- Avg merge
- 4d 14h
- Merged PRs (30d)
- 5
Description
In the discussion under this PR: https://github.com/SciML/ExponentialUtilities.jl/pull/84 . We meet a using case of multipling a linear operator of certain type to a dense matrix. We think it would be fantastic if there is an API called compatible_multiplicative_operand(target, source) in ArrayInterface. That is,
compatible_multiplicative_operand(::CuArray, dense::Matrix) = CuArray(dense)compatible_multiplicative_operand(::Matrix, cuarray::CuArray) = Matrix(cuarray)compatible_multiplicative_operand(::SparseMatrixCSC, dense::Matrix) = densecompatible_multiplicative_operand(::Matrix, sparse::SparseMatrixCSC) = sparse
Similarly, we can define them for Transpose, Adjoint, SubArray, and ReshapedArray, DistributedArray et al.
The key point is, we want two arrays can have compatible array types for multiplication, which is quite different from Base.convert.
Contributor guide
No contributing guide indexed for this repository
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 discussion in PR #84 and the current ArrayInterface API; the issue names no files or tests. Compare the proposed compatible_multiplicative_operand behavior across dense, sparse, GPU, and wrapper array types, with completion defined by an agreed interface and coverage for the supported operand combinations.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- backend-api-design
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100