Add pass for replacing dq-q patterns with rescale #8415
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🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8415
Note: Links to docs will display an error until the docs builds have been completed. ❌ 1 New FailureAs of commit 1c39228 with merge base 8d96d74 ( NEW FAILURE - The following job has failed:
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When an int8 op meets an int32 op, the int8 is first dequantized to a float which is then quantized to the desired int8 dtype. This produces a (int8 dq -> q int32) pattern that we can replace with a TOSA.RESCALE since they are approximately mathematically equivalent, differing only in how the rounding is done. This requires a few changes: - Introduce custom rescale op - Create pass to replace the dq-q pattern with the rescale op - Implement node_visitor for rescale op The change makes it possible to mix int8 and int32 quantization, as showcased in the new test_add_i32_tosa_BI test. Signed-off-by: Erik Lundell <erik.lundell@arm.com> Change-Id: Ifd475ade488fbbeb8395ac883986b19f8edfae5a
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zingo
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dbort
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| from typing import Tuple | ||
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| import torch | ||
| from executorch.backends.arm.arm_backend import get_tosa_version |
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This seems to have broken the unittest-arm job:
https://github.com/pytorch/executorch/actions/runs/13311971065/job/37176555490#step:15:11475
_______________________ ERROR collecting ops/test_add.py _______________________
ImportError while importing test module '/pytorch/executorch/backends/arm/test/ops/test_add.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/opt/conda/envs/py_3.10/lib/python3.10/importlib/__init__.py:126: in import_module
return _bootstrap._gcd_import(name[level:], package, level)
backends/arm/test/ops/test_add.py:12: in <module>
from executorch.backends.arm.arm_backend import get_tosa_version
E ImportError: cannot import name 'get_tosa_version' from 'executorch.backends.arm.arm_backend' (/opt/conda/envs/py_3.10/lib/python3.10/site-packages/executorch/backends/arm/arm_backend.py)
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Yes i also think it did, sorry for the messup. I confirm with a revert to make sure it fixes it. If so lets merge the revert and fix/retry this PR again later.
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When an int8 op meets an int32 op, the int8 is first dequantized to a float which is then quantized to the desired int8 dtype.
This produces a (int8 dq -> q int32) pattern that
we can replace with a TOSA.RESCALE since they are approximately mathematically equivalent, differing only in how the rounding is done.
This requires a few changes:
The change makes it possible to mix int8 and int32 quantization, as showcased in the new test_add_i32_tosa_BI test.
cc @digantdesai @freddan80 @per @zingo @oscarandersson8218