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feat(router-core): add an optional lattice-simd distance backend #765

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feat(router-core): add an optional lattice-simd distance backend #765

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c93b825
feat(router-core): add an optional lattice-simd distance backend
ohdearquant Aug 2, 2026
51081b2
feat(router-core): route Manhattan through the lattice-simd backend
ohdearquant Aug 2, 2026
6dee306
test(router-core): pin lattice-simd parity to an explicit rounding bound
ohdearquant Aug 3, 2026
c86ed64
test(router-core): enforce routed-vs-scalar bound in lattice-simd par…
ohdearquant Aug 3, 2026
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21 changes: 20 additions & 1 deletion Cargo.lock
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14 changes: 14 additions & 0 deletions crates/ruvector-router-core/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,17 @@ description = "Core vector database and neural routing inference engine"
[lib]
crate-type = ["lib", "staticlib"]

[features]
default = []
# Route all four distance metrics through lattice-embed's runtime-dispatched
# SIMD kernels instead of the scalar loops in distance.rs.
#
# Opt-in and off by default. lattice-embed requires Rust >= 1.93 (edition
# 2024) and Cargo cannot express a per-feature `rust-version`, so enabling
# this raises the effective MSRV for anyone who turns it on. The default
# build is unaffected.
lattice-simd = ["dep:lattice-embed"]

[dependencies]
# Workspace dependencies
redb = { workspace = true }
Expand All @@ -23,6 +34,9 @@ bincode = { workspace = true }
serde = { workspace = true }
serde_json = { workspace = true }
simsimd = { workspace = true }
# `default-features = false` keeps this to the SIMD kernels: lattice-embed's
# model, tokenizer, and download stack sit behind its `native` feature.
lattice-embed = { version = "0.7.1", optional = true, default-features = false }
thiserror = { workspace = true }
anyhow = { workspace = true }
tracing = { workspace = true }
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