On the Applicability of PEBS based Online Memory Access Tracking for Heterogeneous Memory Management at Scale
Aleix Roca, Balazs Gerofi, Leonardo Bautista-Gomez, Dominique Martinet, Vicenç Beltran Querol, Yutaka Ishikawa · 2018
Operating systems have historically had to manage only a single type of memory device. The imminent availability of heterogeneous memory devices based on emerging memory technologies confronts the classic single memory model and opens a new spectrum of possibilities for memory management. Transparent data movement between different memory devices based on access patterns of applications is a desired feature to make optimal use of such devices and to hide the complexity of memory management to the end user. However, capturing memory access patterns of an application at runtime comes at a cost, which is particularly challenging for large-scale parallel applications that may be sensitive to system noise.