CAREER: Enhancing Quality through Probabilistic On-Chip Test

未来的集成电路每个芯片将包含数十个、数百个甚至可能上千个核心。 然而，使这成为可能的缩放技术也使底层电路结构不太可靠，导致增加的磨损和在制造时无法检测到的缺陷。 作为回应，PI提出了在片上生成新测试集以识别故障内核的基础研究。 这些测试将被“即时”创建，并动态地针对核心的最关键区域。 拟议研究的一些关键部分涉及硬件监视器的创建和验证，以确定哪些故障对用户的应用程序最重要，在线错误检测硬件的诊断使用，以查明导致先前故障的位置，以及协议的分析和开发，以在片上网络环境中有效地创建和传输测试。未来多芯片的巨大性能优势，如果核心设备的可靠性不能被信任，则这些设备将仍然无法实现。 拟议的研究调查的关键工具，以促进这种可靠性。 综合教育计划为多层次的学生提供研究机会？从高中到研究生院包括来自代表性不足群体的学生。 除了从布朗大学招收本科生外，PI还计划与CRA-W DREU（本科生分布式研究经验）计划合作，接待来访的女本科生进行夏季研究。 PI还将招募来自普罗维登斯公立学校的高中生，其中许多人是代表性不足的群体的成员，通过布朗GK-12计划进行夏季研究。

Future integrated circuits will contain tens, hundreds, or possibly even a thousand cores per chip. However, the scaling techniques that will make this possible also make the underlying circuit fabric less reliable-leading to increased wearout and defects that cannot be detected at manufacturing. In response, the PI proposes fundamental research for generating new test sets on-chip to identify failing cores. The tests will be created "on-the-fly" and dynamically targeted to the most critical areas of a core. Some key portions of the proposed research involve the creation and verification of hardware monitors for determining which faults are most important for the user's applications, the diagnostic use of online error detection hardware to pinpoint locations that caused previous failures, and the analysis and development of protocols to efficiently create and transport tests in a network-on-chip environment.The great performance advantages of future multi-core devices will remain unrealized if the reliability of those devices cannot be trusted. The proposed research investigates critical tools for promoting that reliability. The integrated education plan provides research opportunities for students at multiple levels?from high school to graduate school?including students from underrepresented groups. In addition to recruiting undergraduates from Brown, the PI plans to work with the CRA-W DREU (Distributed Research Experiences for Undergraduates) program to host visiting female undergraduates for summer research. The PI will also recruit high school students from the Providence Public Schools, many of whom are members of underrepresented groups, for summer research through the Brown GK-12 program.