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- W3013840582 abstract "Spin-transfer torque RAM (STT-RAM) is a future technology for ON-chip caches. However, it suffers from high read and write error rates. Concurrently dealing with these errors is quite challenging and incurs large performance overhead. This article proposes a smartly allocating low-cost many-bit ECC (SALE) scheme, which makes use of the low-cost many-bit error correction coding (ECC) to overcome this performance overhead. The low-cost many-bit ECC can fix many errors with low logic complexity and latency overheads. However, it requires a large number of parity bits. Therefore, SALE smartly uses low-cost many-bit ECC for only a certain type of cache lines and manages the corresponding large number of parity bits in the data array. SALE also introduces an ECC-free partition to reduce the ECC storage requirement for the STT-RAM caches. The cache lines belonging to an ECC-free partition do not have dedicated storage space for the ECC parity bits, thereby reducing the ECC storage requirement for the STT-RAM caches. Our experimental results demonstrate that SALE achieves performance close to that of an error-free cache by improving performance by 13% (16%) over the baseline scheme in single-core (quad-core) systems while requiring 50% less storage space for the ECC parity bits." @default.
- W3013840582 created "2020-04-03" @default.
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- W3013840582 date "2020-06-01" @default.
- W3013840582 modified "2023-10-13" @default.
- W3013840582 title "SALE: Smartly Allocating Low-Cost Many-Bit ECC for Mitigating Read and Write Errors in STT-RAM Caches" @default.
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- W3013840582 doi "https://doi.org/10.1109/tvlsi.2020.2977131" @default.
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