CONCEPT: A Column-Oriented Memory Controller for Efficient Memory and PIM Operations in RRAM.
IEEE Micro(2019)
摘要
While DRAM cannot easily scale below a 20nm
technology node, RRAM suffers far less from scalability
issues. Moreover, RRAM’s resistivity enables its use for
processing-in-memory (PIM), potentially alleviating the
von Neumann bottleneck. Unfortunately, because of
technological idiosyncrasies, existing DRAM-centric
memory controllers cannot exploit the full potential of
RRAM. In this paper, we present the design of a
memory controller called CONCEPT. The controller is
optimized to exploit unique properties of RRAM to
enhance its performance and energy efficiency as well
as exploiting RRAM’s PIM capability. We show that with
CONCEPT, RRAM can achieve DRAM-like
performance and energy efficiency on SPEC CPU 2006
benchmarks. Furthermore, using RRAM PIM
capabilities, we show a 5X performance gain on a data-intensive in-memory database
workload compared to a state-of-the-art CPU-memory computing model.
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