Adaptive Placement and Migration Policy for an STT-RAM-Based Hybrid Cache
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Emerging Non-Volatile Memories (NVM) such as Spin-Torque Transfer RAM (STT-RAM) and Resistive RAM (RRAM) have been explored as potential alternatives for traditional SRAM-based Last-Level-Caches (LLCs) due to the benefits of higher density and lower leakage power. However, NVM technologies have long latency and high energy overhead associated with the write operations. Consequently, a hybrid STT-RAM and SRAM based LLC architecture has been proposed in the hope of exploiting high density and low leakage power of STT-RAM and low write overhead of SRAM. Such a hybrid cache design relies on an intelligent block placement policy that makes good use of the characteristics of both STT-RAM and SRAM technology. © 2014 IEEE.
author list (cited authors)
Wang, Z., Jiménez, D. A., Xu, C., Sun, G., & Xie, Y.