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Copy pathtest_sycl_queue_memset.py
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238 lines (180 loc) · 6.44 KB
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# Data Parallel Control (dpctl)
#
# Copyright 2026 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Defines unit test cases for the SyclQueue.memset."""
import numpy as np
import pytest
import dpctl
import dpctl.memory
def _create_memory(q, nbytes=1024):
return dpctl.memory.MemoryUSMShared(nbytes, queue=q)
_MEMORY_CLASSES = [
dpctl.memory.MemoryUSMShared,
dpctl.memory.MemoryUSMHost,
dpctl.memory.MemoryUSMDevice,
]
def _read_back(q, mobj, nbytes):
"""Copy USM memory to host and return it as bytes (works for device)."""
host = bytearray(nbytes)
q.memcpy(host, mobj, nbytes)
return bytes(host)
def _skip_if_usm_unsupported(q, mem_cls):
dev = q.sycl_device
supported = {
dpctl.memory.MemoryUSMShared: dev.has_aspect_usm_shared_allocations,
dpctl.memory.MemoryUSMHost: dev.has_aspect_usm_host_allocations,
dpctl.memory.MemoryUSMDevice: dev.has_aspect_usm_device_allocations,
}
if not supported[mem_cls]:
pytest.skip(f"{mem_cls.__name__} is not supported on this device")
@pytest.mark.parametrize("mem_cls", _MEMORY_CLASSES)
def test_memset_fills_whole_allocation(mem_cls):
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
_skip_if_usm_unsupported(q, mem_cls)
nbytes = 256
mobj = mem_cls(nbytes, queue=q)
q.memset(mobj, 0xAB)
assert _read_back(q, mobj, nbytes) == b"\xab" * nbytes
def test_memset_zero_count_fills_whole_allocation():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 64
mobj = _create_memory(q, nbytes)
q.memset(mobj, 0x01, 0)
assert bytes(memoryview(mobj)) == b"\x01" * nbytes
def test_memset_partial_count():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 16
mobj = _create_memory(q, nbytes)
# zero-out first, then fill only the leading 4 bytes
q.memset(mobj, 0x00)
q.memset(mobj, 0x7F, 4)
assert bytes(memoryview(mobj)) == b"\x7f" * 4 + b"\x00" * (nbytes - 4)
def test_memset_count_clamped_to_allocation():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 8
mobj = _create_memory(q, nbytes)
# requesting more bytes than allocated must not overrun; it is clamped
q.memset(mobj, 0x02, 4 * nbytes)
assert bytes(memoryview(mobj)) == b"\x02" * nbytes
def test_memset_zero_value():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 32
mobj = _create_memory(q, nbytes)
q.memset(mobj, 0xFF)
q.memset(mobj, 0)
assert bytes(memoryview(mobj)) == b"\x00" * nbytes
def test_memset_type_error():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
with pytest.raises(TypeError) as cm:
q.memset(None, 1)
assert "_Memory" in str(cm.value)
@pytest.mark.parametrize("mem_cls", _MEMORY_CLASSES)
def test_memset_async(mem_cls):
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
_skip_if_usm_unsupported(q, mem_cls)
nbytes = 64
mobj = mem_cls(nbytes, queue=q)
e = q.memset_async(mobj, 0xAB)
assert isinstance(e, dpctl.SyclEvent)
e.wait()
assert _read_back(q, mobj, nbytes) == b"\xab" * nbytes
def test_memset_async_with_dependent_events():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 64
half = nbytes // 2
mobj = _create_memory(q, nbytes)
e1 = q.memset_async(mobj, 0x01)
e2 = q.memset_async(mobj, 0x02, half, [e1])
e2.wait()
expected = b"\x02" * half + b"\x01" * (nbytes - half)
assert bytes(memoryview(mobj)) == expected
def test_memset_async_partial_count():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 16
mobj = _create_memory(q, nbytes)
q.memset(mobj, 0x00)
e = q.memset_async(mobj, 0x7F, 4)
e.wait()
assert bytes(memoryview(mobj)) == b"\x7f" * 4 + b"\x00" * (nbytes - 4)
def test_memset_async_type_error():
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
mobj = _create_memory(q)
with pytest.raises(TypeError) as cm:
q.memset_async(None, 1)
assert "_Memory" in str(cm.value)
with pytest.raises(TypeError):
q.memset_async(mobj, 1, 0, [None])
@pytest.mark.parametrize(
"val, expected",
[
(0xAB, 0xAB),
(0, 0x00),
(255, 0xFF),
(256, 0x00),
(-1, 0xFF),
(300, 0x2C),
],
)
def test_memset_value_truncated_to_byte(val, expected):
# ``val`` is used as a single byte, so values wrap modulo 256
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nbytes = 8
mobj = _create_memory(q, nbytes)
q.memset(mobj, val)
assert bytes(memoryview(mobj)) == bytes([expected]) * nbytes
def test_memset_fills_bytewise():
# memset fills byte-by-byte, so 0xAB reads back as 0xABABABAB per uint32
try:
q = dpctl.SyclQueue()
except dpctl.SyclQueueCreationError:
pytest.skip("Default constructor for SyclQueue failed")
nelems = 16
mobj = _create_memory(q, nelems * 4)
q.memset(mobj, 0xAB)
view = np.frombuffer(memoryview(mobj), dtype=np.uint32)
assert np.all(view == 0xABABABAB)