message: Bugfix: Need to pass the number of comm ranks to IOBaton in spio's IOMangaer::read() when using protocols other than sidre_hdf5.
diff: @@ -306,13 +306,13 @@ void IOManager::read(
  if (!m_baton)
  {
  - m_baton = new IOBaton(m_mpi_comm, 1);
  + m_baton = new IOBaton(m_mpi_comm, m_comm_size);
  }
  - m_baton->wait();
  + int group_id = m_baton->wait();
  std::string file_name =
  - getRankGroupFileName(root_file, m_my_rank, protocol);
  + getRankGroupFileName(root_file, group_id, protocol);
  datagroup->load(file_name, protocol, preserve_contents);
  