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test(bindings): nvjitlink_session for reliable teardown in nvjitlink tests #1852

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test(bindings): nvjitlink_session for reliable teardown in nvjitlink tests #1852

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105 changes: 55 additions & 50 deletions cuda_bindings/tests/test_nvjitlink.py
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Original file line number Diff line number Diff line change
@@ -1,10 +1,24 @@
# SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE

from contextlib import contextmanager

import pytest

from cuda.bindings import nvjitlink, nvrtc


@contextmanager
def nvjitlink_session(num_options, options):
"""Create an nvJitLink handle and always destroy it (including on test failure)."""
handle = nvjitlink.create(num_options, options)
try:
yield handle
finally:
if handle != 0:
nvjitlink.destroy(handle)


# Establish a handful of compatible architectures and PTX versions to test with
ARCHITECTURES = ["sm_75", "sm_80", "sm_90", "sm_100"]
PTX_VERSIONS = ["6.4", "7.0", "8.5", "8.8"]
Expand Down Expand Up @@ -95,87 +109,78 @@ def test_invalid_arch_error():

@pytest.mark.parametrize("option", ARCHITECTURES)
def test_create_and_destroy(option):
handle = nvjitlink.create(1, [f"-arch={option}"])
assert handle != 0
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={option}"]) as handle:
assert handle != 0


def test_create_and_destroy_bytes_options():
handle = nvjitlink.create(1, [b"-arch=sm_80"])
assert handle != 0
nvjitlink.destroy(handle)
with nvjitlink_session(1, [b"-arch=sm_80"]) as handle:
assert handle != 0


@pytest.mark.parametrize("option", ARCHITECTURES)
def test_complete_empty(option):
handle = nvjitlink.create(1, [f"-arch={option}"])
nvjitlink.complete(handle)
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={option}"]) as handle:
nvjitlink.complete(handle)


@arch_ptx_parametrized
def test_add_data(arch, ptx_bytes):
handle = nvjitlink.create(1, [f"-arch={arch}"])
nvjitlink.add_data(handle, nvjitlink.InputType.ANY, ptx_bytes, len(ptx_bytes), "test_data")
nvjitlink.complete(handle)
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={arch}"]) as handle:
nvjitlink.add_data(handle, nvjitlink.InputType.ANY, ptx_bytes, len(ptx_bytes), "test_data")
nvjitlink.complete(handle)


@arch_ptx_parametrized
def test_add_file(arch, ptx_bytes, tmp_path):
handle = nvjitlink.create(1, [f"-arch={arch}"])
file_path = tmp_path / "test_file.cubin"
file_path.write_bytes(ptx_bytes)
nvjitlink.add_file(handle, nvjitlink.InputType.ANY, str(file_path))
nvjitlink.complete(handle)
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={arch}"]) as handle:
file_path = tmp_path / "test_file.cubin"
file_path.write_bytes(ptx_bytes)
nvjitlink.add_file(handle, nvjitlink.InputType.ANY, str(file_path))
nvjitlink.complete(handle)


@pytest.mark.parametrize("arch", ARCHITECTURES)
def test_get_error_log(arch):
handle = nvjitlink.create(1, [f"-arch={arch}"])
nvjitlink.complete(handle)
log_size = nvjitlink.get_error_log_size(handle)
log = bytearray(log_size)
nvjitlink.get_error_log(handle, log)
assert len(log) == log_size
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={arch}"]) as handle:
nvjitlink.complete(handle)
log_size = nvjitlink.get_error_log_size(handle)
log = bytearray(log_size)
nvjitlink.get_error_log(handle, log)
assert len(log) == log_size


@arch_ptx_parametrized
def test_get_info_log(arch, ptx_bytes):
handle = nvjitlink.create(1, [f"-arch={arch}"])
nvjitlink.add_data(handle, nvjitlink.InputType.ANY, ptx_bytes, len(ptx_bytes), "test_data")
nvjitlink.complete(handle)
log_size = nvjitlink.get_info_log_size(handle)
log = bytearray(log_size)
nvjitlink.get_info_log(handle, log)
assert len(log) == log_size
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={arch}"]) as handle:
nvjitlink.add_data(handle, nvjitlink.InputType.ANY, ptx_bytes, len(ptx_bytes), "test_data")
nvjitlink.complete(handle)
log_size = nvjitlink.get_info_log_size(handle)
log = bytearray(log_size)
nvjitlink.get_info_log(handle, log)
assert len(log) == log_size


@arch_ptx_parametrized
def test_get_linked_cubin(arch, ptx_bytes):
handle = nvjitlink.create(1, [f"-arch={arch}"])
nvjitlink.add_data(handle, nvjitlink.InputType.ANY, ptx_bytes, len(ptx_bytes), "test_data")
nvjitlink.complete(handle)
cubin_size = nvjitlink.get_linked_cubin_size(handle)
cubin = bytearray(cubin_size)
nvjitlink.get_linked_cubin(handle, cubin)
assert len(cubin) == cubin_size
nvjitlink.destroy(handle)
with nvjitlink_session(1, [f"-arch={arch}"]) as handle:
nvjitlink.add_data(handle, nvjitlink.InputType.ANY, ptx_bytes, len(ptx_bytes), "test_data")
nvjitlink.complete(handle)
cubin_size = nvjitlink.get_linked_cubin_size(handle)
cubin = bytearray(cubin_size)
nvjitlink.get_linked_cubin(handle, cubin)
assert len(cubin) == cubin_size


@pytest.mark.parametrize("arch", ARCHITECTURES)
def test_get_linked_ptx(arch, get_dummy_ltoir):
handle = nvjitlink.create(3, [f"-arch={arch}", "-lto", "-ptx"])
nvjitlink.add_data(handle, nvjitlink.InputType.LTOIR, get_dummy_ltoir, len(get_dummy_ltoir), "test_data")
nvjitlink.complete(handle)
ptx_size = nvjitlink.get_linked_ptx_size(handle)
ptx = bytearray(ptx_size)
nvjitlink.get_linked_ptx(handle, ptx)
assert len(ptx) == ptx_size
nvjitlink.destroy(handle)
with nvjitlink_session(3, [f"-arch={arch}", "-lto", "-ptx"]) as handle:
nvjitlink.add_data(handle, nvjitlink.InputType.LTOIR, get_dummy_ltoir, len(get_dummy_ltoir), "test_data")
nvjitlink.complete(handle)
ptx_size = nvjitlink.get_linked_ptx_size(handle)
ptx = bytearray(ptx_size)
nvjitlink.get_linked_ptx(handle, ptx)
assert len(ptx) == ptx_size


def test_package_version():
Expand Down
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