guberti opened a new pull request, #12484:
URL: https://github.com/apache/tvm/pull/12484
Currently, `tests/micro/common/test_autotune.py` passes on `main` when run
on `qemu` or other microTVM devices (such as the Arduino Due) without the ARM
DSP extension. However, when run on Cortex M4 or M7 devices with this
extension, the following error is seen:
```
logs = list(map(json.loads, str_logs))
> assert len(logs) == 1 * TUNING_RUNS_PER_OPERATOR # One operator
E AssertionError: assert 3 == (1 * 2)
E + where 3 = len([{'config': {'code_hash': None, 'entity':
[['tile_co', 'sp', [-1, 8]], ['tile_oh', 'sp', [-1, 5]], ['tile_ow', 'sp',
[..., 'int32'], {}], 'result': [[0.001604125], 0, 14.074790239334106,
1660810737.063845], 'tvm_version': '0.10.dev0', ...}])
```
This is because there are **two** schedules for Arm with DSP, but one of
them does not have any tuning space (giving `2 + 1 = 3` total autotuning
uploads). This PR fixes the issue by checking the number of tasks extracted,
and ensuring the number of tuned runs is in an expected range.
cc @mehrdadh
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