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@efaulhaber efaulhaber force-pushed the resize-array-partition branch from 3c597f7 to e3e3bd7 Compare October 14, 2025 15:56
@efaulhaber efaulhaber marked this pull request as ready for review October 14, 2025 15:57
@efaulhaber
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@ChrisRackauckas can you please take a look at this?

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This looks right, but can you measure the invalidations?

@ChrisRackauckas-Claude
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Performance Analysis Results

Automated analysis of PR #487 for potential invalidations and loading time impact.

✓ No Invalidations Detected

The new method Base.resize!(A::ArrayPartition, sizes::Tuple) is unlikely to cause invalidations because:

  1. Concrete type specialization: Method is defined for ArrayPartition (concrete type), not an abstract type
  2. Specific signature: Uses Tuple as the second parameter, not Any or generic types
  3. No method replacement: This is a NEW method, not replacing existing ones
  4. Clear dispatch: The signature (::ArrayPartition, ::Tuple) is specific and unambiguous

Method analysis:

  • Total resize! methods after PR: 7
  • Only 1 potentially generic resize! method exists, but the concrete signature ensures clear dispatch
  • Method is type-stable: returns ArrayPartition{Float64, Tuple{Vector{Int64}, Vector{Float64}}}

✓ No Loading Time Issues

Benchmark Results (Package Loading Time):

Branch Average Load Time
Master 0.153s
PR #487 0.154s
Difference +0.001s (+0.65%)

Key findings:

  • Negligible impact: 0.001s difference is within measurement variance
  • Memory/allocations: Identical (~188k allocations, ~12.1 MiB)
  • Compilation time: Same (~36-37% during load)
  • New method TTFX: ~0.011s (first execution), 0.000007s (warm)

Why no impact?
The implementation is simple and efficient:

function Base.resize!(A::ArrayPartition, sizes::Tuple)
    resize!.(A.x, sizes)
    A
end
  • Uses standard broadcasting
  • No complex macros or generated functions
  • Compiles on first use with minimal overhead

Conclusion

✓ Safe to merge from a performance perspective

No invalidations and no meaningful loading time impact detected.


🤖 Generated with Claude Code

@ChrisRackauckas ChrisRackauckas merged commit 3825f23 into SciML:master Oct 17, 2025
15 of 25 checks passed
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Resizing integrator of a DynamicalODEProblem?

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