Persistent Memory Programing on Conventional Hardware (SDC 2019)
Commercially available byte-addressable non-volatile memory (NVM) invites us to re-think the way applications interact with persistent data: The style of programming that NVM invites can dramatically simplify and streamline applications. However, many of the benefits of this style of programming are available on conventional computers, without NVM hardware, via a software abstraction of persistent memory.
This talk will explain how failure-atomic msync (FAMS), a
simple variant of conventional mmap/msync, supports crash-resilient persistent memory programming on conventional hardware. FAMS offers tremendous flexibility in the underlying storage/durability layers and can be implemented in the OS kernel, in the filesystem, or in a userspace library. This talk will review experiences with three past implementations of FAMS and will introduce two new ones.
Code examples in C/C++ will illustrate the use of FAMS-based
persistent memory and will present useful coding idioms.
Presented by Terence Kelly, University of Michigan