npu_info.h

/* Copyright (c) 2022 PaddlePaddle Authors. 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. */

#pragma once

#ifdef PADDLE_WITH_ASCEND_CL

namespace phi {
namespace backends {
namespace npu {

//! Get the minimum chunk size for NPU buddy allocator.
inline size_t NPUMinChunkSize() {
  // NOTE(zhiqiu): It seems the min chunk size should be 512 on NPU,
  // though no document specify that explicitly.
  // See https://gitee.com/zhiqiuchen/Ascend/tree/master/test_reduce_sum_d for
  // details.
  return 1 << 9;
}

}  // namespace npu
}  // namespace backends
}  // namespace phi

#endif