npu_vela Directory Reference

Directory dependency graph for npu_vela:

Directories
	src

Detailed Description

The loader demonstration: instead of hand-building a command stream in SRAM the way npu_smoke does, this app loads a committed, generated model container through the on-target loader and runs it on the Ethos-U55. The loader validates the container and maps it into a job – the command stream plus every resolved region base, with baked weights and input inside the blob and the output activation carved from a runtime SRAM arena – then submits, runs, waits, and asserts the output equals the input plus a constant, byte for byte.

Its output checkword matches npu_smoke's, which is the point: it proves the loader-built job is byte-identical to the hand-built one.

It does not close the Vela work

The container's command stream is the documented stand-in convention declared in the NPU headers, not a Vela-compiled program. So the app exercises the full offline-build to load to submit to run path deterministically, while lowering a real quantized .tflite into a genuine Ethos-U55 command stream with Arm's Vela compiler, and pinning a golden to that, remains open (#227).

The emulator maps the Ethos-U55 window only for the RA8P1 device, decodes the stand-in command stream and applies the op to the tensor arenas, so the run is deterministic there. The host unit test byte-pins the loader's extracted command stream and region layout against mock MMIO.

No RA8P1 board exists to run it on, and the stand-in command stream would not complete a real inference on silicon if one did.