_concurrent_vs_parallel.html"><strong aria-hidden="true">1.</strong> Concurrent vs Parallel</a></li><li><a href="2_async_history.html"><strong aria-hidden="true">2.</strong> Async history</a></li><li><a href="3_0_the_operating_system.html"><strong aria-hidden="true">3.</strong> The Operating System and CPU</a></li><li><ol class="section"><li><a href="3_1_communicating_with_the_os.html"><strong aria-hidden="true">3.1.</strong> Communicating with the OS</a></li><li><a href="3_2_cross_platform_abstractions.htm