150 citations · 527 across the 25 of their papers we have counts for
7 papers · 1 filter
Buddy-RAM: Improving the Performance and Efficiency of Bulk Bitwise Operations Using DRAM
Vivek Seshadri, Donghyuk Lee, Thomas Mullins +7
Bitwise operations are an important component of modern day programming. Many widely-used data structures (e.g., bitmap indices in databases) rely on fast bitwise operations on lar…
Understanding and Exploiting Design-Induced Latency Variation in Modern DRAM Chips
Donghyuk Lee, Samira Khan, Lavanya Subramanian +5
Variation has been shown to exist across the cells within a modern DRAM chip. We empirically demonstrate a new form of variation that exists within a real DRAM chip, induced by the…
Reducing DRAM Latency at Low Cost by Exploiting Heterogeneity
Donghyuk Lee
In modern systems, DRAM-based main memory is significantly slower than the processor. Consequently, processors spend a long time waiting to access data from main memory, making the…
Adaptive-Latency DRAM (AL-DRAM)
Donghyuk Lee, Yoongu Kim, Gennady Pekhimenko +4
This paper summarizes the idea of Adaptive-Latency DRAM (AL-DRAM), which was published in HPCA 2015. The key goal of AL-DRAM is to exploit the extra margin that is built into the D…
RowHammer: Reliability Analysis and Security Implications
Yoongu Kim, Ross Daly, Jeremie Kim +6
As process technology scales down to smaller dimensions, DRAM chips become more vulnerable to disturbance, a phenomenon in which different DRAM cells interfere with each other's op…
Tiered-Latency DRAM (TL-DRAM)
Donghyuk Lee, Yoongu Kim, Vivek Seshadri +3
This paper summarizes the idea of Tiered-Latency DRAM, which was published in HPCA 2013. The key goal of TL-DRAM is to provide low DRAM latency at low cost, a critical problem in m…
Reducing Performance Impact of DRAM Refresh by Parallelizing Refreshes with Accesses
Kevin Kai-Wei Chang, Donghyuk Lee, Zeshan Chishti +4
Modern DRAM cells are periodically refreshed to prevent data loss due to leakage. Commodity DDR DRAM refreshes cells at the rank level. This degrades performance significantly beca…