perf: coarse-grained parallel encoding with fused SIMD (closes #31)#36
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MavenRain wants to merge 1 commit intoitzmeanjan:mainfrom
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perf: coarse-grained parallel encoding with fused SIMD (closes #31)#36MavenRain wants to merge 1 commit intoitzmeanjan:mainfrom
MavenRain wants to merge 1 commit intoitzmeanjan:mainfrom
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…anjan#31) Replace fine-grained rayon par_iter (one task per piece, per-piece allocation, two-pass multiply then add) with coarse-grained chunking across threads. Each thread accumulates its piece range using the fused multiply-and-add SIMD operation in a single memory pass with zero per-piece allocation. Reduces allocation from O(piece_count) to O(num_threads) and halves memory bandwidth per piece.
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Replace fine-grained rayon par_iter (one task per piece, per-piece allocation, two-pass multiply then add) with coarse-grained chunking across threads. Each thread accumulates its piece range using the fused multiply-and-add SIMD operation in a single memory pass with zero per-piece allocation. Reduces allocation from O(piece_count) to O(num_threads) and halves memory bandwidth per piece.