A Case for Nonuniform Fault Tolerance in Emerging Memories

By Intel Corporation
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As DRAM systems face scalability challenges, the architecture community has started investigating alternative technologies for main memory. These emerging memory technologies tend to suffer from the problem of limited write endurance. We propose Pay-As-You-Go (PAYG), an efficient hard-error resilient architecture that allocates error correction entries in proportion to the number of hard faults in the line. Compared to uniform error correction, PAYG requires one third the storage overhead and yet provides 13 percent more lifetime. Read More

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