DREAM:用于大规模有限差分计算的专用架构

Proceedings of the Twenty-Fifth Hawaii International Conference on System Sciences Pub Date : 1992-01-07 DOI:10.1109/HICSS.1992.183158

J. Makino, Y. Ohno, T. Ebisuzaki, S. Okumura

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摘要

提出了DREAM(磁盘资源阵列机)的概念，这是一种为大规模有限差分模拟而设计的体系结构。在预设的计算机上，有限差分计算的大小受到内存大小的限制。DREAM系统使用磁盘作为主存储器。如果用磁盘作为主存储器，用同样的费用就可以制造出容量大100倍的机器。在DREAM体系结构中，数据传输速率和磁盘单元的访问时间都不限制计算速度。通过并行访问多个磁盘，可以提高数据传输速率。对于所有数据都以长向量形式访问的有限差分计算，访问时间变得可以忽略不计。拥有2gb内存和40- 80mflops速度的DREAM系统售价约为2万美元。一个1兆字节磁盘的系统要花费几百万美元。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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DREAM: a special-purpose architecture for large scale finite difference calculations

Presents the concept of DREAM (Disk REsource Array Machine), an architecture designed for large-scale finite difference simulations. On preset computers, the size of finite difference calculation is limited by the size of the memory. The DREAM system uses magnetic disks as the main memory. With main memory made of magnetic disks, one can construct a machine with 100 times larger memory for the same cost. With the DREAM architecture, neither the data transfer rate nor the access time of the disk unit limit the computing speed. The data transfer rate is increased by accessing a number of disks in parallel. The access time becomes negligible for finite difference calculations in which all data are accessed in long vectors. A DREAM system with 2 GByte memory and 40-80 MFLOPS speed costs around 20000 dollars. A system with a 1 TByte disk would cost several million dollars.<>

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Proceedings of the Twenty-Fifth Hawaii International Conference on System Sciences

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