Enum SearchStrategy 

pub enum SearchStrategy {
    Scalar,
    SimdBruteForce,
    Blas,
    Accelerate,
    RayonParallel,
    Gpu,
    IvfPq,
}

Search strategy selection based on collection size and hardware.

< 1K:      Scalar (overhead of SIMD dispatch not worth it)
1K-100K:   Accelerate (AMX/cblas_sgemv) > BLAS (matrixmultiply) > SIMD prenorm
1K-10K:    SIMD brute force with pre-computed norms (fallback)
10K-50K:   Rayon parallel SIMD (if available) OR GPU (if available)
50K-500K:  GPU (if available) OR IVF-PQ
> 100K:    IVF-PQ always (regardless of BLAS/GPU)

Variants

Scalar

Plain scalar search for tiny collections (< 1K).

SimdBruteForce

SIMD brute force with pre-computed norms (1K-10K).

Blas

BLAS batch matrix-vector multiply (1K-100K, requires fast-math feature).

Accelerate

Apple Accelerate / OpenBLAS cblas_sgemv (1K-100K, requires accelerate/openblas).

RayonParallel

Rayon parallel SIMD search (10K-50K, requires parallel feature).

Gpu

GPU-accelerated search (10K-500K, requires gpu feature).

IvfPq

IVF-PQ approximate search for large collections.

Trait Implementations

impl Clone for SearchStrategy

fn clone(&self) -> SearchStrategy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SearchStrategy

impl Debug for SearchStrategy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for SearchStrategy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for SearchStrategy

impl PartialEq for SearchStrategy

fn eq(&self, other: &SearchStrategy) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SearchStrategy