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Export an MLX model for the iOS demo build #22297

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Export an MLX model for the iOS demo build #22297

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c6f3e0d
Export an MLX model for the iOS demo build
shoumikhin Aug 29, 2026
c9e6e49
Stage the MLX model in both iOS scripts, and check it was produced
shoumikhin Aug 29, 2026
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31 changes: 31 additions & 0 deletions .ci/scripts/test_ios_ci.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,37 @@ python3 -m examples.portable.scripts.export --model_name="$MODEL_NAME" --segment
python3 -m examples.apple.coreml.scripts.export --model_name="$MODEL_NAME"
python3 -m examples.xnnpack.aot_compiler --model_name="$MODEL_NAME" --delegate

# MLX has no examples/ export script of its own yet. Lowering is ahead of time and
# imports no mlx runtime package, so it runs on this runner like the others.
python3 - "$MODEL_NAME" <<'PY'
import sys

import torch
from executorch.backends.mlx import MLXPartitioner
from executorch.examples.models import MODEL_NAME_TO_MODEL
from executorch.examples.models.model_factory import EagerModelFactory
from executorch.exir import EdgeCompileConfig, to_edge_transform_and_lower
from executorch.extension.export_util.utils import save_pte_program

model_name = sys.argv[1]
model, example_inputs, _, _ = EagerModelFactory.create_model(
*MODEL_NAME_TO_MODEL[model_name]
)
program = to_edge_transform_and_lower(
torch.export.export(model.eval(), example_inputs),
partitioner=[MLXPartitioner()],
compile_config=EdgeCompileConfig(_skip_dim_order=True),
).to_executorch()
save_pte_program(program, f"{model_name}_mlx")
PY

# save_pte_program logs write failures instead of raising, and the wildcard move
# below would happily stage a truncated file, so check the result here.
test -s "${MODEL_NAME}_mlx.pte" || {
echo "error: ${MODEL_NAME}_mlx.pte was not produced" >&2
exit 1
}

mkdir -p "$APP_PATH/Resources/Models/MobileNet/"
mv $MODEL_NAME*.pte "$APP_PATH/Resources/Models/MobileNet/"

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31 changes: 31 additions & 0 deletions scripts/test_ios.sh
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Expand Up @@ -66,6 +66,37 @@ python3 -m examples.portable.scripts.export --model_name="$MODEL_NAME"
python3 -m examples.apple.coreml.scripts.export --model_name="$MODEL_NAME"
python3 -m examples.xnnpack.aot_compiler --model_name="$MODEL_NAME" --delegate

# MLX has no examples/ export script of its own yet. Lowering is ahead of time and
# imports no mlx runtime package, so it runs on this runner like the others.
python3 - "$MODEL_NAME" <<'PY'
import sys

import torch
from executorch.backends.mlx import MLXPartitioner
from executorch.examples.models import MODEL_NAME_TO_MODEL
from executorch.examples.models.model_factory import EagerModelFactory
from executorch.exir import EdgeCompileConfig, to_edge_transform_and_lower
from executorch.extension.export_util.utils import save_pte_program

model_name = sys.argv[1]
model, example_inputs, _, _ = EagerModelFactory.create_model(
*MODEL_NAME_TO_MODEL[model_name]
)
program = to_edge_transform_and_lower(
torch.export.export(model.eval(), example_inputs),
partitioner=[MLXPartitioner()],
compile_config=EdgeCompileConfig(_skip_dim_order=True),
).to_executorch()
save_pte_program(program, f"{model_name}_mlx")
PY

# save_pte_program logs write failures instead of raising, and the wildcard move
# below would happily stage a truncated file, so check the result here.
test -s "${MODEL_NAME}_mlx.pte" || {
echo "error: ${MODEL_NAME}_mlx.pte was not produced" >&2
exit 1
}

mkdir -p "$APP_PATH/Resources/Models/MobileNet/"
mv $MODEL_NAME*.pte "$APP_PATH/Resources/Models/MobileNet/"

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