Method CopyFromGPUArray

internal/ceres/cuda_buffer.h:114–122

Perform an asynchronous copy from another GPU memory array to the GPU memory managed by this CudaBuffer instance using the stream provided.

  // Perform an asynchronous copy from another GPU memory array to the GPU
  // memory managed by this CudaBuffer instance using the stream provided.
  void CopyFromGPUArray(const T* data, const size_t size) {
    Reserve(size);
    CHECK_EQ(cudaMemcpyAsync(data_,
                             data,
                             size * sizeof(T),
                             cudaMemcpyDeviceToDevice,
                             context_->DefaultStream()),
             cudaSuccess);
  }

  // Copy data from the GPU memory managed by this CudaBuffer instance to CPU
  // memory. It is the caller's responsibility to ensure that the CPU memory