Eric Lunderberg
7dc0472aef
This commit resolves a bug that was introduced in https://github.com/apache/tvm/pull/16377. If no CUDA-capable GPUs are present, the call to `cudaGetDeviceCount` will return an error, which will be raised as an exception by the `CUDA_CALL` macro. However, checking the `kExist` flag is valid even if no GPUs are present. This commit removes the use of `CUDA_CALL`, and instead returns false in this case.
53 lines
1.5 KiB
Python
53 lines
1.5 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
|
|
# or more contributor license agreements. See the NOTICE file
|
|
# distributed with this work for additional information
|
|
# regarding copyright ownership. The ASF licenses this file
|
|
# to you 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.
|
|
|
|
import os
|
|
import subprocess
|
|
import sys
|
|
|
|
import tvm
|
|
import tvm.testing
|
|
|
|
|
|
def test_check_if_device_exists():
|
|
"""kExist can be checked when no devices are present
|
|
|
|
This test uses `CUDA_VISIBLE_DEVICES` to disable any CUDA-capable
|
|
GPUs from being accessed by the subprocess. Within the
|
|
subprocess, the CUDA driver cannot be initialized. While most
|
|
functionality of CUDADeviceAPI would raise an exception, the
|
|
`kExist` property can still be checked.
|
|
|
|
"""
|
|
|
|
cmd = [
|
|
sys.executable,
|
|
"-c",
|
|
"import tvm; tvm.device('cuda').exist",
|
|
]
|
|
subprocess.check_call(
|
|
cmd,
|
|
env={
|
|
**os.environ,
|
|
"CUDA_VISIBLE_DEVICES": "",
|
|
},
|
|
)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
tvm.testing.main()
|