message: Add comments about why we use uint64_t type for alignment.
diff: @@ -27,6 +27,10 @@ namespace tensorflow {
  namespace tensorrt {
  // std::align is not supported, so this method mimic its behavior.
  +//
  +// NOTE(aaroey): according to the TensorRT API,
  +// nvinfer1::IGpuAllocator::allocate() uses uint64_t type for size and alignment
  +// parameters, so here we use the same type to make it compatible.
  void* Align(uint64_t alignment, uint64_t size, void*& ptr, uint64_t& space) {
  QCHECK_GT(alignment, 0ul) << "alignment must be greater than 0.";
  QCHECK_EQ(0, alignment & (alignment - 1)) << "Alignment must be power of 2.";
  