Slides available here!

Speaker:

Jishen Zhao, University of California Santa Cruz, USA

Title:

Using persistent memory to support fault tolerance in storage systems

Abstract:

Next-generation nonvolatile memories combine byte-addressability and high performance of memory with nonvolatility of disk/flash. They promise emerging persistent memory systems that are directly attached to the memory bus, offering fast load/store access and data persistence in a single level of storage. Persistent memory can be especially attractive in distributed systems, where fault tolerance support through storage systems is critical to performance and energy. Yet existing fault tolerance mechanisms, such as logging and checkpointing, are designed for slow block-level storage interfaces; their design choices are not wholly suitable for persistent memory. This talk will explore efficient fault tolerance techniques that exploit the fast memory interface and the nature of single-level storage. Our preliminary exploration shows that, by reducing data duplication and increasing application parallelism, such techniques can substantially improve system performance and energy consumption.

Bio:

Jishen Zhao an Assistant Professor in the Computer Engineering Department at University of California, Santa Cruz. She is also affiliated with the Storage Systems Research Center at UCSC. Her research falls primarily in the area of computer architecture, with an emphasis on memory and storage systems, high-performance computing, and energy efficiency. She is also interested in electronics design automation and VLSI design for three-dimensional integrated circuits and nonvolatile memories.



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