中文 English
Home
TECHNICAL PAPERS

Reduce RowHammer Vulnerability By Reducing Wordline Voltage

popularity

Researchers from ETH Zurich present a new technical paper titled “Understanding RowHammer Under Reduced Wordline Voltage: An Experimental Study Using Real DRAM Devices.”

Abstract (Partial)

“This is the first work to experimentally demonstrate on 272 real DRAM chips that lowering VPP reduces a DRAM chip’s RowHammer vulnerability. We show that lowering VPP 1) increases the number of activate-precharge cycles needed to induce a RowHammer bit flip by up to 85.8% with an average of 7.4% across all tested chips and 2) decreases the RowHammer bit error rate by up to 66.9% with an average of 15.2% across all tested chips. At the same time, reducing VPP marginally worsens a DRAM cell’s access latency, charge restoration, and data retention time within the guardbands of system-level nominal timing parameters for 208 out of 272 tested chips. We conclude that reducing VPP is a promising strategy for reducing a DRAM chip’s RowHammer vulnerability without requiring modifications to DRAM chips.”

Find the technical paper here, presentation slides here and YouTube talk here (premieres 7/19/22).

arXiv:2206.09999v1
Authors: A. Giray Yağlıkçı, Haocong Luo, Geraldo F. de Oliviera, Ataberk Olgun, Minesh Patel, Jisung Park, Hasan Hassan, Jeremie S. Kim, Lois Orosa, Onur Mutlu.

 

Related
ETH Zurich Introduces ProTRR, In-DRAM Rowhammer Mitigation
DRAM Thermal Issues Reach Crisis Point
Increased transistor density and utilization are creating memory performance issues.
A Case For Transparent Reliability In DRAM Systems
Researchers study four ways that system designers can adapt commodity DRAM chips to system-specific design goals.
A Deeper Look Into RowHammer’s Sensitivities: Experimental Analysis Of Real DRAM Chips And Implications On Future Attacks And Defenses
Sensitivity of the RowHammer vulnerability to temperature, aggressor row active time, and spatial location of aggressor and victim rows in a DRAM chip. Includes new observations & lower-cost RH defenses.



Leave a Reply


(Note: This name will be displayed publicly)