NDLI: Half-DRAM:a high-bandwidth and low-power DRAM architecture from the rethinking of fine-grained activation

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Unifying on-chip and inter-node switching within the Anton 2 network

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The Direct-to-Data (D2D) cache

Fine-grain task aggregation and coordination on GPUs

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Memory persistency

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Row-buffer decoupling

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Real-world design and evaluation of compiler-managed GPU redundant multithreading

Harnessing ISA diversity

Going vertical in memory management

Replay debugging

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Volume 42, Issue 2, May 2014

Volume 42, Issue 1, March 2014

Half-DRAM:a high-bandwidth and low-power DRAM architecture from the rethinking of fine-grained activation

Content Provider	ACM Digital Library
Author	Xie, Yuan Zhang, Tao Wang, Tao Sun, Guangyu Xu, Cong Chen, Ke
Abstract	DRAM memory is a major contributor for the total power consumption in modern computing systems. Consequently, power reduction for DRAM memory is critical to improve system-level power efficiency. Fine-grained DRAM architecture [1, 2] has been proposed to reduce the activation/ precharge power. However, those prior work either incurs significant performance degradation or introduces large area overhead. In this paper, we propose a novel memory architecture Half-DRAM, in which the DRAM array is reorganized to enable only half of a row being activated. The half-row activation can effectively reduce activation power and meanwhile sustain the full bandwidth one bank can provide. In addition, the half-row activation in Half-DRAM relaxes the power constraint in DRAM, and opens up opportunities for further performance gain. Furthermore, two half-row accesses can be issued in parallel by integrating the sub-array level parallelism to improve the memory level parallelism. The experimental results show that Half-DRAM can achieve both significant performance improvement and power reduction, with negligible design overhead
Starting Page	349
Ending Page	360
Page Count	12
File Format	PDF
ISSN	01635964
DOI	10.1145/2678373.2665724
Journal	ACM SIGARCH Computer Architecture News (CARN)
Volume Number	42
Issue Number	3
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1981-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article

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