Free atomic consistency in storage class memory with software based write-aside persistence

Abstract

This paper describes a lightweight software library to solve the challenges [5, 3, 1, 4, 2] of programming storage class memory (SCM). It provides primitives to demarcate failure-atomic code regions. SCM loads and stores within each de-marcated code region (called a "wrap") are routed through the library, which buffers updates and transmits them to SCM locations asynchronously while allowing their speedy propagation from writers to readers through CPU caches.