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/*
* Copyright (c) 2019-2023, NVIDIA CORPORATION. All rights reserved.
*
* 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.
*/
#include "cuda_utils.h"
namespace fastertransformer {
/* ***************************** common utils ****************************** */
cudaError_t getSetDevice(int i_device, int* o_device)
{
int current_dev_id = 0;
cudaError_t err = cudaSuccess;
if (o_device != NULL) {
err = cudaGetDevice(¤t_dev_id);
if (err != cudaSuccess) {
return err;
}
if (current_dev_id == i_device) {
*o_device = i_device;
}
else {
err = cudaSetDevice(i_device);
if (err != cudaSuccess) {
return err;
}
*o_device = current_dev_id;
}
}
else {
err = cudaSetDevice(i_device);
if (err != cudaSuccess) {
return err;
}
}
return cudaSuccess;
}
/* ************************** end of common utils ************************** */
} // namespace fastertransformer
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