Repository navigation
Accelerate BN254 CRT reconstruction and export - #178
Merged
Merged
Conversation
odraccir1
changed the title
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Reduce the cost of converting small-prime FFT results back into BN254 coefficients through fused normalization and certified direct Montgomery reconstruction.
• Fold CRT cofactor inverses into the cached inverse-transform normalization, removing a modular multiplication per residue.
• Accumulate precomputed Montgomery export weights and use an integer interval certificate to prove both the centering correction and the coefficient bound.
• Export certified results through one Montgomery reduction. Ambiguous cases retain exact wide reconstruction and the existing bound checks.
• Apply the optimized path to ordinary, prepared, cyclic, and fused matrix products.
• Fix register exhaustion in the x86 Montgomery reducer by addressing its constants through one shared pointer, supporting default-visibility macOS builds in Release and Debug.
Native x86 benchmarks at degree 2048, using one core and medians of three measured trials, show 9.2–9.8× faster CRT reconstruction/export. Complete operations measured in clean production builds improve by 1.57–2.53×.