• Mohammad Chowdhury
• Ashikee Ghosh
• Adnan Maruf
• Liana Valdez
• Raju Rangaswami

Modern operating systems have been designed around the hypotheses that (a) memory is both byte-addressable and volatile and (b) storage is block addressable and persistent. The arrival of new Persistent Memory (PM) technologies, has made these assumptions obsolete. Despite much of the recent work in this space, the need for consistently sharing PM data across multiple applications remains an urgent, unsolved problem.
The Region System is a high-performance operating system stack for PM that implements usable consistency and persistence for application data. The region system provides support for consistently mapping and sharing data resident in PM across user application address spaces. Its high-performance design minimizes the expensive PM ordering and durability operations by embracing a minimalistic approach to metadata construction and management. Finally, the region system creates a novel IPI based PMSYNC operation, which ensures atomic persistence of mapped pages across multiple address spaces.

• Native OS Support for Persistent Memory with Regions pdf
  Mohammad Chowdhury and Raju Rangaswami
  Proceedings of the International Conference on Mass Storage Systems and Technology (MSST), 2017.

• LibPM: Simplifying Application Usage of Persistent Memory pdf
  Leonardo Marmol, Mohammad Chowdhury, and Raju Rangaswami
  ACM Transactions on Storage, Volume 14 Issue 4, December 2018, Article No. 34.

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This work is supported in part by the National Science Foundation under grant CCF-1718335