Function Tensor2Pinned

paddle/fluid/framework/hogwild_worker.cc:152–161

#endif
template <typename TStream>
inline void Tensor2Pinned(phi::DenseTensor *tensor, const TStream &stream) {
#if defined(PADDLE_WITH_CUDA)
  const size_t mem_len = tensor->memory_size();
  auto place = phi::GPUPinnedPlace();
  auto holder = memory::AllocShared(place, mem_len);
  memory::Copy(
      place, holder->ptr(), tensor->place(), tensor->data(), mem_len, stream);
  tensor->ResetHolderWithType(holder, tensor->dtype());
#endif
}
template <typename TCopyer>
void HogwildWorker::OffLoadVarInfo::CopyInputs(const Scope *root,
                                               const phi::Place &place,