Claude/continue session 0m a va#27
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AdaWorldAPI merged 6 commits intomasterfrom Mar 24, 2026
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Minecraft-style variable bit width encoding for palette indices (1–8 bits). Smaller palettes use fewer bits: 4-entry palette → 2 bits → 4× compression. Core API: - bits_for_palette_size(n) → minimum bits needed - pack_indices(&[u8], bits) → Vec<u64> - unpack_indices(&[u64], bits, count) → Vec<u8> - pack/unpack_indices_bytes() — serialization-friendly byte variants - transcode(packed, old_bits, new_bits, count) — in-place width change - compression_ratio(bits) → f32 PackedPaletteArray wrapper: - from_indices() — auto-selects bit width from palette size - get(i)/set(i, val) — O(1) random access into packed data - grow_palette(new_size) — widen bit width when palette grows - compression_ratio() — actual compression achieved 18 tests covering: all bit widths (1-8), non-aligned boundaries, byte roundtrip, transcode, grow, compression, empty/single edge cases. https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB
- packed.rs: add // SAFETY: comments to both prefetch unsafe blocks - packed.rs: fix prefetch_t1 doc (was "non-temporal", correct is "L2 temporal") - vml.rs: document vspow domain restriction (a[i] > 0 required for SIMD path) Sentinel-QA verdict: BLOCK → PASS after these fixes. https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB
- simd.rs: allow unused_imports on re-exports (intentional public API surface) - simd_avx512.rs: allow dead_code (types for consumer use, not yet all consumed) - hpc/mod.rs: remove duplicated #[allow(missing_docs)] attribute - hpc/zeck.rs: remove unused popcount_raw import - hpc/compression_curves.rs: prefix unused gt_top10 with underscore, allow dead_code - hpc/cyclic_bundle.rs: allow dead_code (benchmark utilities) - hpc/blas_level2.rs: use saturating_sub and abs_diff per clippy - backend/kernels_avx512.rs: use += assign operators per clippy - hpc/parallel_search.rs: remove redundant closure https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB
Three patterns (SIMD slices, Copy microcopies, gated write-back) and the no-&mut-self-during-computation rule. https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB
Replace manual index arithmetic with chunks_exact/chunks_exact_mut zip patterns. Eliminates bounds-check overhead for smaller MKL-sized arrays. Packed database uses chunks_exact for row iteration. https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB
Port jitson (JSON config → native code via Cranelift JIT) into hpc::jitson. Module structure: - ir.rs: ScanParams, PhilosopherIR, RecipeIR, JitError (always available) - detect.rs: CpuCaps with Copy derive (always available) - engine.rs: JitEngine with RwLock cache, &self compile path (jit feature) - scan.rs: ScanKernel + Cranelift IR generation (jit feature) Key design decisions: - Cranelift deps behind optional `jit` feature flag (heavy deps) - JitEngine::compile_scan takes &self (not &mut self) per data-flow rules - Cache uses RwLock with double-checked locking for thread safety - CpuCaps is Copy; ScanParams remains Clone (contains Vec) - Cranelift 0.116 (crates.io published) instead of wasmtime fork path deps 8 new tests (ir + detect), 1036 total lib tests passing. https://claude.ai/code/session_01CdqyUTUfjKZuk8YGJzv6LB
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This was referenced Apr 30, 2026
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