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Arm backend: Backend test serializes and uses EthosUQuant on Ethos-U flows #14817

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Oct 6, 2025
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Arm backend: Backend test serializes and uses EthosUQuant on Ethos-U flows #14817

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60 changes: 28 additions & 32 deletions backends/test/suite/flows/arm.py
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Expand Up @@ -3,70 +3,66 @@
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

# Create flows for Arm Backends used to test operator and model suits

from executorch.backends.arm.quantizer import (
get_symmetric_quantization_config,
TOSAQuantizer,
)
from executorch.backends.arm.common.arm_compile_spec import ArmCompileSpec
from executorch.backends.arm.quantizer import get_symmetric_quantization_config
from executorch.backends.arm.test import common
from executorch.backends.arm.test.tester.arm_tester import ArmTester
from executorch.backends.arm.tosa.compile_spec import TosaCompileSpec
from executorch.backends.arm.util._factory import create_quantizer
from executorch.backends.test.suite.flow import TestFlow
from executorch.backends.xnnpack.test.tester.tester import Quantize


def _create_tosa_flow(
def _create_arm_flow(
name,
compile_spec,
quantize: bool = False,
compile_spec: ArmCompileSpec,
symmetric_io_quantization: bool = False,
per_channel_quantization: bool = True,
) -> TestFlow:

def _create_arm_tester(*args, **kwargs) -> ArmTester:
kwargs["compile_spec"] = compile_spec
return ArmTester(*args, **kwargs)

support_serialize = not isinstance(compile_spec, TosaCompileSpec)
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we should be able to run on tosa reference model, no?

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@zingo zingo Oct 6, 2025 •
edited
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We do not have a "runner" for it. We only have a special testflow.
Enabling serilize right now causes more fails. Need to investigate more so I left it as a future exercise

quantize = compile_spec.tosa_spec.support_integer()

return ArmTester(
*args,
**kwargs,
)
if quantize is True:

# Create and configure quantizer to use in the flow
def create_quantize_stage() -> Quantize:
quantizer = TOSAQuantizer(compile_spec)
quantization_config = get_symmetric_quantization_config(
is_per_channel=per_channel_quantization
)
if symmetric_io_quantization:
quantizer.set_io(quantization_config)
return Quantize(quantizer, quantization_config)
def create_quantize_stage() -> Quantize:
quantizer = create_quantizer(compile_spec)
quantization_config = get_symmetric_quantization_config(
is_per_channel=per_channel_quantization
)
if symmetric_io_quantization:
quantizer.set_io(quantization_config)
return Quantize(quantizer, quantization_config)

return TestFlow(
name,
backend="arm",
tester_factory=_create_arm_tester,
supports_serialize=False,
supports_serialize=support_serialize,
quantize=quantize,
quantize_stage_factory=create_quantize_stage if quantize else None,
quantize_stage_factory=(create_quantize_stage if quantize is True else False),
)


ARM_TOSA_FP_FLOW = _create_tosa_flow(
"arm_tosa_fp", common.get_tosa_compile_spec(tosa_spec="TOSA-1.0+FP")
ARM_TOSA_FP_FLOW = _create_arm_flow(
"arm_tosa_fp",
common.get_tosa_compile_spec(tosa_spec="TOSA-1.0+FP"),
)
ARM_TOSA_INT_FLOW = _create_tosa_flow(
ARM_TOSA_INT_FLOW = _create_arm_flow(
"arm_tosa_int",
common.get_tosa_compile_spec(tosa_spec="TOSA-1.0+INT"),
quantize=True,
)

ARM_ETHOS_U55_FLOW = _create_tosa_flow(
ARM_ETHOS_U55_FLOW = _create_arm_flow(
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When running the model won't this flow run into long runtime issues?

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runs kind of OK on my laptop, modeltest took about 30-40min I think. Lets see :)

"arm_ethos_u55",
common.get_u55_compile_spec(),
quantize=True,
)

ARM_ETHOS_U85_FLOW = _create_tosa_flow(
ARM_ETHOS_U85_FLOW = _create_arm_flow(
"arm_ethos_u85",
common.get_u85_compile_spec(),
quantize=True,
)
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