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Use _setindex! to fix DimensionMismatch in sparse assignment, Fixes #28963 #30507

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merged 1 commit into from
Dec 26, 2018
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Use _setindex! to fix DimensionMismatch in sparse assignment, Fixes #28963 #30507

merged 1 commit into from
Dec 26, 2018

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raghav9-97
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Fixes #28963.

@ViralBShah ViralBShah added the domain:arrays:sparse Sparse arrays label Dec 25, 2018
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Please review this PR.

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A lot of people are on vacation this week. Hence reviews are likely to be slow.

Also may I request you to make the PR title and commit have a bit more detail about the issue in addition to the number?

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raghav9-97 commented Dec 26, 2018 •
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@ViralBShah Used _setindex! for checking SparseMatrices compatibility fixing DimensionMismatch, Fixes#28963 is this good enough as a commit message and PR title?

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ViralBShah commented Dec 26, 2018 •
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Used _setindex! for checking SparseMatrices compatibility fixing DimensionMismatch in assignment
Fixes #28963

There can be many places where dimension mismatch happens. It is important to mention that it is fixing the mismatch in assignment.

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I've reviewed this and am happy to merge once the commit message and PR titles are updated with a little more info as above.

@raghav9-97 raghav9-97 changed the title Fixed DimensionMismatch for SparseMatrixCSC Used _setindex! for checking SparseMatrices compatibility fixing DimensionMismatch in assignment Fixes #28963 Dec 26, 2018
@raghav9-97 raghav9-97 changed the title Used _setindex! for checking SparseMatrices compatibility fixing DimensionMismatch in assignment Fixes #28963 Used _setindex! for checking SparseMatrices compatibility fixing DimensionMismatch in assignment, Fixes #28963 Dec 26, 2018
@ViralBShah ViralBShah changed the title Used _setindex! for checking SparseMatrices compatibility fixing DimensionMismatch in assignment, Fixes #28963 Use _setindex! to fix DimensionMismatch in sparse assignment, Fixes #28963 Dec 26, 2018
@ViralBShah ViralBShah merged commit b73a746 into JuliaLang:master Dec 26, 2018
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Thanks @ViralBShah for helping out.

@raghav9-97 raghav9-97 deleted the sparsematrix branch December 26, 2018 17:31
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ViralBShah commented Dec 26, 2018 •
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@fredrikekre are we going to backport to 1.0 as well? I have a bunch of other PRs merged that should also be backported.

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Yes.

staticfloat pushed a commit that referenced this pull request Dec 30, 2018
@raghav9-97 @staticfloat
Fix DimensionMismatch in SparseMatrixCSC assignment (#30507)
7d81a90 
Use _setindex! to fix DimensionMismatch in sparse assignment
Fixes #28963
KristofferC pushed a commit that referenced this pull request Dec 30, 2018
@raghav9-97 @KristofferC
Fix DimensionMismatch in SparseMatrixCSC assignment (#30507)
ded25d3 
Use _setindex! to fix DimensionMismatch in sparse assignment
Fixes #28963

(cherry picked from commit b73a746)
@KristofferC KristofferC mentioned this pull request Dec 30, 2018
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@mbauman mbauman added the kind:bugfix This change fixes an existing bug label Dec 31, 2018
staticfloat pushed a commit that referenced this pull request Jan 4, 2019
@raghav9-97 @staticfloat
Fix DimensionMismatch in SparseMatrixCSC assignment (#30507)
11ec344 
Use _setindex! to fix DimensionMismatch in sparse assignment
Fixes #28963
@StefanKarpinski StefanKarpinski added status:triage This should be discussed on a triage call backport 1.1 and removed backport 1.0 status:triage This should be discussed on a triage call labels Jan 31, 2019
@StefanKarpinski StefanKarpinski added backport 1.0 status:triage This should be discussed on a triage call and removed status:triage This should be discussed on a triage call backport 1.0 labels Jan 31, 2019
@JeffBezanson JeffBezanson removed status:triage This should be discussed on a triage call triage backport pending 1.0 labels Jan 31, 2019
mbauman
mbauman reviewed Jan 31, 2019
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stdlib/SparseArrays/src/sparsematrix.jl
@@ -2575,6 +2575,7 @@ function setindex!(A::SparseMatrixCSC{Tv,Ti}, V::AbstractVecOrMat, Ix::Union{Int
@assert !has_offset_axes(A, V, Ix, Jx)
(I, J) = Base.ensure_indexable(to_indices(A, (Ix, Jx)))
checkbounds(A, I, J)
Base._setindex!(IndexStyle(A), A, V, to_indices(A, (Ix, Jx))...)
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Doesn't this just assign into the array twice? Once with the generic (slow) dense version, and then once with the optimized sparse version? We just want to be checking the shape of V, no?

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Indeed: before:

julia> A = spzeros(1000,1000)
1000×1000 SparseMatrixCSC{Float64,Int64} with 0 stored entries

julia> @btime $A[:,:] = $(spzeros(1000, 1000))
  5.557 μs (5 allocations: 8.39 KiB)

After:

julia> @btime $A[:,:] = $(spzeros(1000, 1000))
  9.545 ms (5 allocations: 8.39 KiB)

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#30923

mbauman added a commit that referenced this pull request Jan 31, 2019
@mbauman
Fixup #30507, check indexed assignment size for SparseMatrix
c0922fc 
without assigning into the array twice.
StefanKarpinski pushed a commit that referenced this pull request Feb 4, 2019
@mbauman @StefanKarpinski
Fixup #30507, check indexed assignment size for SparseMatrix (#30923)
a5f680f 
without assigning into the array twice.
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@raghav9-97 @ViralBShah @fredrikekre @mbauman @StefanKarpinski @JeffBezanson