NVSL News

NVSL Releases NOVA, a File System for Non-volatile Main Memory

NOVA is a log-structured file system designed for byte-addressable, non-volatile memories. NOVA is fully POSIX compliant so that existing applications need not be modified to run on NOVA. NOVA bypasses the block layer and OS page cache, writes to NVM directly and reduces the software overhead.

NOVA combines a novel logging scheme and journalling to provide strong consistency guarantees, good scalability, and fast recovery time. NOVA maintains a private log for each iNode, allowing for concurrent accesses, updates, and recovery from system failures.

Andiry will present NOVA at the USENIX FAST conference in February.

Read the paper.


Congratulations Professor Zhang!

Dr. Yiying Zhang has just completed her post-doc in the NVSL and has moved to Purdue as an Assistant Professor.  Hurray!


Steve Interviewed for USENIX ;Login:

Rik Farrow, editor of USENIX ;Login: (USENIX's technology magazine) interviewed Steven about the future of storage, where researchers can have the most impact in the area of SSDs, and the future non-volatile memories.


Michael Wei Receives NSF Graduate Research Fellowship

The NSF awards these fellowships across science, engineering, and math-related disciplines. They are very prestigious.

From the NSF web site: The National Science Foundation's Graduate Research Fellowship Program (GRFP) helps ensure the vitality of the human resource base of science and engineering in the United States and reinforces its diversity. The program recognizes and supports outstanding graduate students in NSF-supported science, technology, engineering, and mathematics disciplines who are pursuing research-based master's and doctoral degrees at accredited US institutions.

Way to go, Michael!


Our Protoype Phase-Change Storage Array Will be at HotStorage '11

This paper describes Onyx, our prototype phase-change memory-based storage array. It holds 10 GB of first-generation phase change memory and provides a window into the future of fast SSDs. Onyx leverages the NVSL's work on Moneta to minimize software overheads and provide a high-bandwidth, low-latency interface to fast non-volatile memories.

Ameen Akel designed the PCM "DIMMs" that form the heart of Onyx. They hold 40 Micron phase change memory chips and hold 640 MB each. He also crafted a PCM DIMM controller that maximizes performance while efficiently maximizing PCM reliability with a lightweight wear-leveling scheme.

Ameen will present the work at HotStorage 2011 in June.


Moneta on Stage at Supercomputing 2010

Adrian, Steve, Laura, Ameen, and Joel attended Supercomputing 2010 this week in New Orleans. It was great fun, and Adrian gave a great talk. Other highlights of our trip included eating some great New Orleans food including a variety of po-boy sandwiches, jambalaya, fried green tomatoes, some fantastic barbeque, beneigns, and some great key lime pie. There was also a very memorable walking tour of some of New Orlean's less-known sites. To top it all off, Adrian won an iPad!