Runtime selection

This repo has three supported local FVP runtime engines:

• litert
• helia_rt
• helia_aot

The rule is:

• pick defaults.fvp.runtime_engine
• then add only the fields for that engine

LiteRT uses Arm CMSIS-NN. heliaRT and heliaAOT use heliaCORE (ns-cmsis-nn). heliaRT defaults to heliaCORE; the optional explicit setting is helia_rt_backend: helia-core, with helia and ns-cmsis-nn accepted as aliases. The former RT cmsis_nn and reference selections are rejected. Generic/reference LiteRT support is deferred. Historical result bundles remain readable with their original runtime/backend values.

Quick Start

LiteRT:

uv sync
uv run helx setup
uv run helx run --config examples/at110/kws_litert.yaml

heliaRT:

uv sync
uv run helx setup
uv run helx run --config examples/at110/kws_helia_rt.yaml

heliaAOT:

uv sync --extra aot
uv run --extra aot helx setup
uv run --extra aot helx run --config examples/at110/kws_helia_aot.yaml
uv run --extra aot helx run-case --runtime-engine helia_aot

YAML Pattern

LiteRT:

defaults:
  fvp:
    enabled: true
    run: true
    runtime_engine: litert

heliaRT:

defaults:
  fvp:
    enabled: true
    run: true
    runtime_engine: helia_rt
    helia_rt_backend: helia-core

heliaAOT:

defaults:
  fvp:
    enabled: true
    run: true
    runtime_engine: helia_aot
    helia_aot:
      platform:
        name: atomiq110
      module:
        name: my_model_aot
        prefix: mymodel

Engine-Specific Fields

Use helia_rt_backend only with runtime_engine: helia_rt.

Use helia_aot: only with runtime_engine: helia_aot.

Do not use helia_aot.enabled. It is no longer supported.

For helx run-case --runtime-engine helia_aot, the CLI generates a minimal helia_aot: block with:

• platform.name: atomiq110
• module.name: <model_name>_aot
• module.prefix: <model_name>

Checked-In Examples

• LiteRT: examples/at110/kws_litert.yaml (../examples/at110/kws_litert.yaml in the supplied checkout)
• heliaRT: examples/at110/kws_helia_rt.yaml (../examples/at110/kws_helia_rt.yaml in the supplied checkout)
• heliaAOT KWS: examples/at110/kws_helia_aot.yaml (../examples/at110/kws_helia_aot.yaml in the supplied checkout)