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- W3211279327 abstract "Three-dimensional (3-D) integrated cross-point memory arrays can be used to build high-density storage-class memory systems. However, the coupled network topology caused by sharing word lines or bit lines between adjacent memory layers significantly enlarges the memory space overhead and time cost of memory operation simulations on mega-scale 3-D cross-point memory arrays. We observe that different components of the 3-D cross-point array have different contribution significance to the key metrics of write or read operations, and the distribution patterns of principal components in the arrays are different for write and read operations. We propose an operation-adaptive array modeling framework that exploits the impact of the applied operation on the distribution of array principal components for 3-D cross-point memory arrays. Based on the modeling framework, we propose two array network compaction methods for efficient write and read operation simulations on 3-D cross-point arrays, respectively: 1) pruning zero-biased unselected cells and 2) group-merging neighboring half-selected cells with a specific granularity. Also, serially connected line segments are merged, and floating segments are deleted. Evaluations show that the proposed methods significantly reduce the memory space overhead and time cost of memory operation simulations for various layer sizes and different cell-level access parallelism in an array. Besides, the proposed methods can efficiently simulate memory operations on multilayered 3-D cross-point memory arrays with up to <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$4096times 4096$ </tex-math></inline-formula> layer size under the 16-GB memory space constraint, achieving a 64-times improvement in layer size that can be simulated compared with the conventional complete 3-D cross-point array network model." @default.
- W3211279327 created "2021-11-08" @default.
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- W3211279327 date "2022-10-01" @default.
- W3211279327 modified "2023-10-15" @default.
- W3211279327 title "Space-Time-Efficient Modeling of Large-Scale 3-D Cross-Point Memory Arrays by Operation Adaption and Network Compaction" @default.
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- W3211279327 doi "https://doi.org/10.1109/tcad.2021.3123591" @default.
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