SHF: SMALL: LUCID: Low-overhead, Unobtrusive Cache Contention Detection and Repair

标题：SHF: SMALL: LUCID：低开销，不显眼的缓存争用检测和修复过去十年已经见证了处理器设计向多核架构的历史性转变。从服务器到平板电脑、手机和手表，处理器架构师都在使用多核来实现性能和能源目标。不幸的是，在这些处理器上编写性能良好的并行代码远非易事。这个项目的智力优势包括开发新的算法，通过集成来自硬件、编译器和运行时系统等计算堆栈的支持，来发现和修复并行代码中的性能缺陷。该项目更广泛的意义和重要性在于提高并行代码的性能和能源效率，为所有多核计算设备的用户提供好处。该项目还寻求鼓励下一代计算机科学家中代表性不足的群体的参与。这个项目利用了硬件性能计数器的最新进展，它允许在实际系统中对缓存争用进行低开销、不引人注目的分析。这种性能计数器信息驱动了新的技术，可以在没有程序员干预的情况下发现和自动修复缓存争用。该研究探索了将争用检测和修复与托管语言运行时集成在一起。研究人员计划公开分发为该项目构建的系统，以方便其他研究人员的检查，并将研究成果整合到教育中。

Title: SHF: SMALL: LUCID: Low-overhead, Unobtrusive Cache Contention Detection and RepairThe last decade has overseen a historic shift in processor design towards multicore architectures. From servers to tablets, phones and watches, processor architects are using multiple cores to achieve performance and energy targets. Unfortunately, writing parallel code that performs well on these processors is far from easy. The intellectual merits of this project include developing new algorithms for finding and fixing performance bugs in parallel code by integrating support from across the computing stack including hardware, compilers and runtime systems. The project's broader significance and importance is to improve the performance and energy efficiency of parallel code, providing benefits for the users of all multicore computing devices. This project also seeks to encourage participation from underrepresented groups in the next generation of computer scientists.This project leverages recent advances in hardware performance counters that allow for low-overhead, unobtrusive profiling of cache contention in real systems. This performance counter information drives new techniques for finding and automatically fixing cache contention without programmer intervention. The research explores integrating contention detection and repair with managed language runtimes. The researchers plan to openly distribute the systems built for this project to facilitate examination by other researchers and to integrate the research results into education.