As transistor dimensions continue to shrink, long-term reliability threats, such as Negative Bias Temperature Instability, affect multicore processors lifespan. This letter proposes a load balancing technique, based on the rate of integer and floating-point instructions per workloads. This technique classifies workloads into integer-majority and floating-point-majority classes and migrates workloads among cores in order to relax the stressed execution units. The context switching feature of operating system is employed to reduce implementation and performance overheads of the proposed technique. According to the simulations, the proposed technique reduces the aging rate of a multicore processor by about 35 percent in 10 years of system operation. This is achieved by only 7 percent performance penalty.

中文翻译：

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基于工作负载分类的多核处理器老化感知上下文切换

随着晶体管尺寸不断缩小，负偏置温度不稳定性等长期可靠性威胁会影响多核处理器的使用寿命。这封信提出了一种基于每个工作负载的整数和浮点指令率的负载平衡技术。这种技术将工作负载分为整数类和浮点类，并在内核之间迁移工作负载以放松压力很大的执行单元。操作系统的上下文切换特性被用来减少所提出技术的实现和性能开销。根据模拟，所提出的技术在 10 年的系统运行中将多核处理器的老化率降低了约 35%。这仅通过 7% 的性能损失实现。