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Title: Optimizated allocation of data variables to pcm/dram-based hybrid main memory for real-time embedded systems
Authors: Wang, Z
Gu, Z
Shao, Z 
Issue Date: 2014
Source: IEEE embedded systems letters, 2014, v. 6, no. 3, 6825854, p. 61-64
Abstract: Phase-change memory (PCM) has many advantages compared to conventional DRAM, including nonvolatility, low static energy consumption, and high reliability. Its drawbacks include limited write-endurance and higher energy consumption for write operations. We consider a hybrid main memory consisting of PCM and DRAM at the same level of the memory hierarchy, and address the problem of partitioning and allocating data variables in a multitasking system to either memory type to minimize the energy consumption in the hyper-period while respecting the user-specified upper bounds on CPU utilization. We present an optimal integer linear programming (ILP) formulation and a heuristic algorithm with polynomial time complexity.
Keywords: Dram
Embedded systems
Phase-change memory (PCM)
Real-time scheduling
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE embedded systems letters 
ISSN: 1943-0663 (print)
1943-0671 (online)
DOI: 10.1109/LES.2014.2325878
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