Method on_batch_begin

src/callbacks/profiler.cpp:139–145

}

void profiler::on_batch_begin(model* m)
{
  const auto& c = m->get_execution_context();
  prof_region_begin(("batch " + std::to_string(c.get_step())).c_str(),
                    prof_colors[1],
                    m_sync);
}

void profiler::on_batch_end(model* m)
{