基于虚通道的SDRAM访存调度器研究

J4 ›› 2012, Vol. 34 ›› Issue (1): 43-48.

基于虚通道的SDRAM访存调度器研究

邓让钰,谢伦国,刘德峰,潘国腾

（国防科学技术大学计算机学院，湖南长沙 410073）

收稿日期:2010-05-20 修回日期:2010-10-26 出版日期:2012-01-25 发布日期:2012-01-25

A Virtual Channel Based SDRAM Access Scheduler

DENG Rangyu,XIE Lunguo,LIU Defeng,PAN Guoteng

(School of Computer Science,National University of Defense Technology,Changsha 410073,China)

Received:2010-05-20 Revised:2010-10-26 Online:2012-01-25 Published:2012-01-25

摘要/Abstract

摘要：

随着半导体工艺水平的进步，CPU与存储器的速度差距越来越大，存储器带宽已成为计算机系统的关键资源。根据目前广泛使用的SDRAM存储器多体并行存储的结构特点，提出了一种基于虚通道的访存调度器和最小等待时间读请求优先调度策略，避免了访存请求之间的数据相关性，加快了访存请求的调度，提高了存储器带宽的利用率。

关键词: 访存调度, 虚通道, SDRAM存储系统, 存储器带宽

Abstract:

With the progress of semiconductor manufacturing techniques and the development of processor architectures, the gap between the processor and the DRAM speeds is becoming larger and larger, and memory bandwidth is now the primary bottleneck of improving the computer system performance. Modern DRAM provides several independent memory banks, according to this characteristics, we present a virtual channel based memory access scheduler, and a least wait time and readfirst scheduling approach. This approach significantly reduce the observed main memory access latency and improve the effective memory bandwidth utility.

Key words: memory access scheduling;virtual channel;SDRAM memory system;memory bandwidth

邓让钰,谢伦国,刘德峰,潘国腾. 基于虚通道的SDRAM访存调度器研究[J]. J4, 2012, 34(1): 43-48.

DENG Rangyu,XIE Lunguo,LIU Defeng,PAN Guoteng. A Virtual Channel Based SDRAM Access Scheduler[J]. J4, 2012, 34(1): 43-48.

[1]	田烁，窦强，王勇，张洪广，周朝兵,李石明. 一种解决访存调度问题的改进蚁群优化算法[J]. 计算机工程与科学, 2016, 38(08): 1563-1567.
[2]	马驰远[1] 陈书明[2] 邢座程[1] 郝跃[3]. 支持流数据传输的互连网络控制器研究与实现[J]. J4, 2008, 30(9): 103-106.