In-DRAM Bulk Bitwise Execution Engine

Understand

Many applications heavily use bitwise operations on large bitvectors as part of their computation.

• In existing systems, performing such bulk bitwise operations requires the processor to transfer a large amount of data on the memory channel, thereby consuming high latency, memory bandwidth, and energy.
• In this paper, we describe Ambit, a recently-proposed mechanism to perform bulk bitwise operations completely inside main memory.
• Ambit exploits the internal organization and analog operation of DRAM-based memory to achieve low cost, high performance, and low energy.