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Real-Time Dynamic Hardware Reconfiguration for Processors with Redundant Functional Units

机译：具有冗余功能单元的处理器的实时动态硬件重新配置

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The tiny logic elements in modern integrated circuits increase the rate of transient failures significantly. Therefore, redundancy on various levels is necessary to retain reliability. However, for mixed-criticality scenarios, the typical processor designs offer either too little fault-tolerance or too much redundancy for one part of the applications. Amongst others, we specifically address redundant processor internal functional units (FU) to cope with transient errors and support wear leveling. A real-time operating system (RTOS) was extended to control our prototypical hardware platform and, since it can be configured deterministically within few clock cycles, we are able to reconFigure the FUs dynamically, at process switching time, according to the specified critically of the running processes. Our mechanisms were integrated into the Plasma processor and the Plasma-RTOS. With few changes to the original software code, it was, for example, possible to quickly change from fault-detecting to fault-correcting modes of the processor on demand.
机译：现代集成电路中的微小逻辑元件大大提高了瞬态故障率。因此，需要各种级别的冗余来保持可靠性。但是，对于混合关键性情况，典型的处理器设计对于一部分应用程序提供的容错性太小或冗余性太高。除其他外，我们特别解决了冗余处理器内部功能单元（FU）的问题，以应对瞬态错误并支持损耗均衡。扩展了实时操作系统（RTOS），以控制我们的原型硬件平台，并且由于可以在几个时钟周期内确定性地配置它，因此我们能够根据指定的临界值在流程切换时动态地重新配置FU。正在运行的进程。我们的机制已集成到Plasma处理器和Plasma-RTOS中。例如，只需对原始软件代码进行少量更改，就可以根据需要将处理器的故障检测模式迅速更改为故障纠正模式。

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