A Case for Transparent Reliability in DRAM Systems

Understand

Today's systems have diverse needs that are difficult to address using one-size-fits-all commodity DRAM.

• Unfortunately, although system designers can theoretically adapt commodity DRAM chips to meet their particular design goals (e.g., by reducing access timings to improve performance, implementing system-level RowHammer mitigations), we observe that designers today lack sufficient insight into commodity DRAM chips' reliability characteristics to implement these techniques in practice.
• In this work, we make a case for DRAM manufacturers to provide increased transparency into key aspects of DRAM reliability (e.g., basic chip design properties, testing strategies).
• Doing so enables system designers to make informed decisions to better adapt commodity DRAM to meet modern systems' needs while preserving its cost advantages.