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import tempfile
from pathlib import Path
import halide as hl
import numpy as np
def test_serialize_deserialize_pipeline_file():
"""Test serializing and deserializing a pipeline to/from a file."""
x, y = hl.vars("x y")
f = hl.Func("f")
f[x, y] = x + y
pipeline = hl.Pipeline(f)
with tempfile.NamedTemporaryFile(suffix=".hlpipe", delete=False) as tmp:
filename = Path(tmp.name)
try:
hl.serialize_pipeline(pipeline, filename)
assert filename.exists()
assert filename.stat().st_size > 0
deserialized_pipeline = hl.deserialize_pipeline(filename)
result = deserialized_pipeline.realize([10, 10])
assert result.dim(0).extent() == 10
assert result.dim(1).extent() == 10
expected = np.add.outer(np.arange(10), np.arange(10))
assert np.array_equal(np.array(result), expected)
finally:
filename.unlink(missing_ok=True)
def test_serialize_deserialize_pipeline_bytes():
"""Test serializing and deserializing a pipeline to/from bytes."""
x, y = hl.Var("x"), hl.Var("y")
f = hl.Func("f")
f[x, y] = x * 2 + y
pipeline = hl.Pipeline(f)
data = hl.serialize_pipeline(pipeline)
assert isinstance(data, bytes)
assert len(data) > 0
deserialized_pipeline = hl.deserialize_pipeline(data)
result = deserialized_pipeline.realize([5, 5])
expected = np.fromfunction(lambda x, y: x * 2 + y, (5, 5), dtype=int).transpose()
assert np.array_equal(np.array(result), expected)
def test_serialize_deserialize_with_parameters():
"""Test serializing and deserializing a pipeline with external parameters."""
x = hl.Var("x")
p = hl.Param(hl.Int(32), "multiplier", 1)
f = hl.Func("f")
f[x] = x * p
pipeline = hl.Pipeline(f)
with tempfile.NamedTemporaryFile(suffix=".hlpipe", delete=False) as tmp:
filename = Path(tmp.name)
try:
params = hl.serialize_pipeline(pipeline, filename, get_params=True)
assert "multiplier" in params
assert params["multiplier"].name() == "multiplier"
user_params = {"multiplier": hl.Param(hl.Int(32), "multiplier", 5).parameter()}
deserialized_pipeline = hl.deserialize_pipeline(filename, user_params)
result = deserialized_pipeline.realize([3])
assert list(result) == [0, 5, 10]
finally:
filename.unlink(missing_ok=True)
def test_serialize_deserialize_with_parameters_bytes():
"""Test serializing and deserializing a pipeline with parameters using bytes."""
x = hl.Var("x")
p = hl.Param(hl.Int(32), "offset", 0)
f = hl.Func("f")
f[x] = x + p
pipeline = hl.Pipeline(f)
data, params = hl.serialize_pipeline(pipeline, get_params=True)
assert "offset" in params
assert params["offset"].name() == "offset"
user_params = {"offset": hl.Param(hl.Int(32), "offset", 100).parameter()}
deserialized_pipeline = hl.deserialize_pipeline(data, user_params)
result = deserialized_pipeline.realize([3])
assert list(result) == [100, 101, 102]
def test_deserialize_parameters_file():
"""Test deserializing just the parameters from a file."""
x = hl.Var("x")
p1 = hl.Param(hl.Int(32), "param1", 1)
p2 = hl.Param(hl.Float(32), "param2", 2.0)
f = hl.Func("f")
f[x] = hl.cast(hl.Int(32), x * p1 + p2)
pipeline = hl.Pipeline(f)
with tempfile.NamedTemporaryFile(suffix=".hlpipe", delete=False) as tmp:
filename = Path(tmp.name)
try:
hl.serialize_pipeline(pipeline, filename)
params = hl.deserialize_parameters(filename)
assert "param1" in params
assert "param2" in params
assert params["param1"].name() == "param1"
assert params["param2"].name() == "param2"
assert params["param1"].type() == hl.Int(32)
assert params["param2"].type() == hl.Float(32)
finally:
filename.unlink(missing_ok=True)
def test_deserialize_parameters_bytes():
"""Test deserializing just the parameters from bytes."""
x = hl.Var("x")
p1 = hl.Param(hl.UInt(16), "width", 64)
p2 = hl.Param(hl.UInt(16), "height", 64)
f = hl.Func("f")
f[x] = hl.select(x < p1, p2, 0)
pipeline = hl.Pipeline(f)
data = hl.serialize_pipeline(pipeline)
params = hl.deserialize_parameters(data)
assert "width" in params
assert "height" in params
assert params["width"].type() == hl.UInt(16)
assert params["height"].type() == hl.UInt(16)
def test_pipeline_with_multiple_outputs():
"""Test serializing/deserializing a pipeline with multiple outputs."""
x, y = hl.vars("x y")
f1 = hl.Func("f1")
f1[x, y] = x + y
f2 = hl.Func("f2")
f2[x, y] = x - y
pipeline = hl.Pipeline([f1, f2])
data = hl.serialize_pipeline(pipeline)
deserialized_pipeline = hl.deserialize_pipeline(data)
results = deserialized_pipeline.realize([5, 5])
assert len(results) == 2
expected = np.add.outer(np.arange(5), np.arange(5))
assert np.array_equal(np.array(results[0]), expected)
expected = np.subtract.outer(np.arange(5), np.arange(5)).transpose()
assert np.array_equal(np.array(results[1]), expected)
def test_empty_user_params():
"""Test that empty user_params works correctly."""
x = hl.Var("x")
f = hl.Func("f")
f[x] = x * x
pipeline = hl.Pipeline(f)
data = hl.serialize_pipeline(pipeline)
deserialized1 = hl.deserialize_pipeline(data, {})
result1 = deserialized1.realize([3])
assert list(result1) == [0, 1, 4]
deserialized2 = hl.deserialize_pipeline(data)
result2 = deserialized2.realize([3])
assert list(result2) == [0, 1, 4]
if __name__ == "__main__":
test_serialize_deserialize_pipeline_file()
test_serialize_deserialize_pipeline_bytes()
test_serialize_deserialize_with_parameters()
test_serialize_deserialize_with_parameters_bytes()
test_deserialize_parameters_file()
test_deserialize_parameters_bytes()
test_pipeline_with_multiple_outputs()
test_empty_user_params()
print("Success!")
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