Bringing Hardware Multithreading to the Real-Time Domain
Bringing Hardware Multithreading to the Real-Time Domain
复制标题
将硬件多线程引入实时领域
DOI：
10.1109/les.2015.2486384
复制
发表时间：
2016
影响因子：
1.6
通讯作者：
A. Tavares
中科院分区：
文献类型：
--
作者：
T. Gomes;Paulo Garcia;Sandro Pinto;J. Monteiro;A. Tavares
硬件多线程（HW-MT）体系结构的出现提高了MT应用程序的性能。然而，传统的HW-MT体系结构不适合实时操作系统，其面向性能的调度算法可能会与RTOS软件调度冲突。这封信介绍了RT-SHADOWS，一个便携式的架构，提供了一个统一的硬件-软件调度，带来的好处HW-MT的RTOS域。我们表明，紧密耦合的实时兼容的硬件集成实现吞吐量的好处，保持RTOS调度策略不变，同时增加RTOS的可预测性。我们的解决方案平均速度比原生版本提高了3到4倍，面积使用/性能开销比非常低，因为它的成本最低（每个硬件支持的线程2%的额外切片）。这项工作超越了相关的工作，提供了一个完整的和不可知的硬件解决方案，这是独立于任何特定的RTOS。
The emergence of hardware multithread (HW-MT) architectures increased the performance of MT applications. However, traditional HW-MT architectures are not suitable to real-time operating systems as their performance-oriented scheduling algorithm may conflict with RTOS software scheduling. This letter presents RT-SHADOWS, a portable architecture which provides a unified hardware-software scheduling, bringing the benefits of HW-MT to the RTOS domain. We show that tightly-coupled real-time compliant hardware integration achieves throughput benefits, maintaining the RTOS scheduling policy intact while increasing the predictability of RTOSes. Our solution shows on average, speed-ups between 3 and 4 times over the native versions with very low area usage/performance overhead ratio, due to its minimal cost (2% of extra slices per hardware-supported thread). This work surpasses related work by providing a complete and agnostic hardware solution which is independent of any specific RTOS.