Application Resource Management for Exploitation of Non-Volatile Memory in Many-Core Systems.

Current trends in many-core system design show an increasing desire to integrate several cores and accelerators on a single chip in order to support better parallel applications. Moreover, the increasing number of parallel applications and tasks result in heavy memory utilization. Non-Volatile Memories (NVMs) prevail as a replacement of DRAM due to low leakage power and higher density. However, NVMs support limited number of write operations and consequently suffer from short lifetime issues. Additionally, non-uniform distribution of write operations on NVMs has worsen this situation. Most of the state-of-the-art approaches improve NVM lifetime by re-designing the system at the architecture level. In this paper, we propose an application mapping framework for parallel applications exploiting and improving the lifetime of NVMs in distributed shared memory systems. Results show an improvement of ×3.2 in lifetime and a reduction of 60% in write variation.