X-ray：通过发送内存命令发现DRAM内部结构与错误特性
X-ray: Discovering DRAM Internal Structure and Error Characteristics by Issuing Memory Commands
AI总结：
本文通过激活诱导位翻转、保留时间测试和行复制操作，在单个DRAM芯片层面揭示子阵列结构并纠正AIBs相关误解，为rowhammer成因提供实验证据。
摘要：
对动态随机存取存储器（DRAM）内部结构与特性的准确信息需求日益增长。近期研究已探索DRAM的结构与特性，以改进内存内处理、增强可靠性并缓解一种名为rowhammer的漏洞。然而，DRAM制造商仅通过官方文件披露有限信息，使得获取实际DRAM器件的具体信息十分困难。本文利用激活诱导位翻转（AIBs）、保留时间测试和行复制操作，给出了关于DRAM内部结构与特性的可靠发现。以往研究虽试图理解DRAM器件的内部行为，但仅展示结果而未识别原因，或分析的是DRAM模块而非单个芯片。我们首先揭示了DRAM子阵列的尺寸、结构与操作方式，并验证了关于DRAM特性的发现。随后，我们纠正了与AIBs相关的被误解的信息，并展示了支持rowhammer成因的实验结果。我们期望所揭示的关于DRAM结构、行为与特性的信息将有助于未来的DRAM研究。
英文摘要：
The demand for accurate information about the internal structure and characteristics of dynamic random-access memory (DRAM) has been on the rise. Recent studies have explored the structure and characteristics of DRAM to improve processing in memory, enhance reliability, and mitigate a vulnerability known as rowhammer. However, DRAM manufacturers only disclose limited information through official documents, making it difficult to find specific information about actual DRAM devices. This paper presents reliable findings on the internal structure and characteristics of DRAM using activate-induced bitflips (AIBs), retention time test, and row-copy operation. While previous studies have attempted to understand the internal behaviors of DRAM devices, they have only shown results without identifying the causes or have analyzed DRAM modules rather than individual chips. We first uncover the size, structure, and operation of DRAM subarrays and verify our findings on the characteristics of DRAM. Then, we correct misunderstood information related to AIBs and demonstrate experimental results supporting the cause of rowhammer. We expect that the information we uncover about the structure, behavior, and characteristics of DRAM will help future DRAM research.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
