Enum ExecutionProvider 

pub enum ExecutionProvider {
    Cpu,
    CoreMl,
    Nnapi,
    Cuda,
    XnnPack,
}

Which ONNX Runtime execution provider to request for a session.

Canonical home is here (the module that owns session creation) so the low-level constructors can name it without depending on pipeline_v2; pipeline_v2::config re-exports it, so existing imports keep compiling.

EP is ort-specific config — it is not part of InferenceRuntime. Stages pass it only at session construction via build_session_with_ep.

Wiring status (ort): Cpu always works. CoreMl registers when built with the coreml feature on macOS aarch64. XnnPack registers with the xnnpack feature. Nnapi and Cuda are reserved — they warn and fall back to CPU until wired. Uncompiled / unwired choices never fail the build.

Variants

Cpu

Always available. No EP registration; ort uses its built-in CPU path.

CoreMl

CoreML on macOS aarch64 when the coreml feature is enabled; else CPU + warn.

Nnapi

Reserved for Android NNAPI — not wired yet (CPU + warn).

Cuda

Reserved for NVIDIA CUDA — not wired yet (CPU + warn).

XnnPack

XNNPACK when the xnnpack feature is enabled; else CPU + warn.

Implementations

impl ExecutionProvider

pub fn auto() -> Self

Best default for the current target: CoreML on Apple Silicon, XNNPACK on aarch64 Linux, plain CPU elsewhere. Unwired / uncompiled providers fall back to CPU with a warning at session-build time.

pub fn is_available(self) -> bool

Whether this variant can register under the current build + target. Nnapi / Cuda always return false until wired. CoreMl / XnnPack require their cargo features (and CoreML also needs macOS aarch64).

Trait Implementations

impl Clone for ExecutionProvider

fn clone(&self) -> ExecutionProvider

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExecutionProvider

impl Debug for ExecutionProvider

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

Formats the value using the given formatter.

impl PartialEq for ExecutionProvider

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExecutionProvider