whn09 760e3cadc0 Neuron: test suite for new boxes, device-vs-host differential tool
- tests/neuron/setup_trn2.sh: one-shot setup of a fresh Trn2 (venv layered
  on the DLAMI torch-neuronx venv, C++ build, official reference + tokenizer,
  tiny checkpoint, CPU golden).
- tests/neuron/run_all.sh cpu|device|all [stage...]: vendor kernel tests,
  tilelang_ops interface tests (basic-mode stubs reported as skips via
  nie_skip), deep_ep at world size 1/2/4 (gloo) and 2/4/8 on the neuron
  process group, device primitive checks, end-to-end vs golden on CPU and
  on a NeuronCore, and the device diff; PASS/FAIL summary.
- tests/neuron/device/test_device_primitives.py: torch-neuronx behaviours
  the port depends on or works around (fp8 strided-view indexing, uint64,
  1-rank all_to_all, inference-mode version counters, ...).
- examples/neuron/device_diff.py: re-runs every kernel call of a NeuronCore
  run on host copies and ranks kernels by device/host difference.
- Unit tests written during bring-up moved from scratch dirs into
  tests/neuron/{deep_gemm,flash_mla,deep_ep,tile_kernels,sampling}.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-21 09:46:29 +08:00

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Python

import torch
def test_timer(benchmark_timer, seed):
us = benchmark_timer(lambda: torch.ones(8).sum())
assert us > 0 and isinstance(seed, int)