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- W2947376717 abstract "Spin Transfer Torque Magnetic Random Access Memory (STT-MRAM) is a promising candidate for large on-chip memories as a zero-leakage, high-density and non-volatile alternative to the present SRAM technology. Since memories are the dominating component of a System-on-Chip, the overall performance of the system is highly dependent on that memories. Nevertheless, the high write energy and latency of the emerging STT-MRAM are the most challenging design issues in a modern computing system. By relaxing the non-volatility of these devices, it is possible to reduce the write energy and latency costs, at the expense of reducing the retention time, which in turn may lead to loss of data. In this article, we propose a hybrid STT-MRAM design for caches with different retention capabilities. Then, based on the application requirements (i.e., execution time and memory access rate), program data layout is re-arranged at compilation time for achieving fast and energy-efficient hybrid STT-MRAM on-chip memory design with no reliability degradation. The application requirements have been defined at function granularity based on profiling and compiler-level analysis, which estimate the required retention time and memory access rate, respectively. Experimental results show that the proposed hybrid STT-MRAM cache combined with profiling-based and compiler-level analysis for the data re-arranging, on average, reduces the write energy per access by 49.7%. At system level, overall static and dynamic energy of the cache are reduced by 8.1% and 44%, respectively, whereas, the system performance has been improved up to 8.1%." @default.
- W2947376717 created "2019-06-07" @default.
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- W2947376717 date "2019-05-29" @default.
- W2947376717 modified "2023-10-02" @default.
- W2947376717 title "Compiler-Assisted and Profiling-Based Analysis for Fast and Efficient STT-MRAM On-Chip Cache Design" @default.
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- W2947376717 doi "https://doi.org/10.1145/3321693" @default.
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