Accession Number : ADA374599


Title :   Filling the Memory Access Gap: A Case for On-Chip Magnetic Storage


Corporate Author : CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE


Personal Author(s) : Schlosser, Steven W ; Griffin, John L ; Nagle, David F ; Ganger, Gregory R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a374599.pdf


Report Date : Nov 1999


Pagination or Media Count : 23


Abstract : For decades, The memory hierarchy access gap has plagued computer architects with the RAM/disk gap widening to about 6 orders of magnitude in 1999. However, an exciting new storage technology based on MicroElectroMechanical Systems (MEMS) is poised to fill a large portion of this performance gap, delivering significant performance improvements and enabling many new types of applications. This research explores the impact MEMS-based storage will have on computer systems. Working closely with researchers building MEMS-based storage devices, we examine the performance impact of several design points. Results from five different applications show that MEMS-based storage can reduce application I/O stall times by 80-99%, with overall performance improvements ranging from 1.1x to 20x for these applications. Most of these improvements result from the fact that average access times for MEMS-based storage are 5 times faster than disks (e.g., 1-3ms). Others result from fundamental differences in The physical behavior of MEMS-based storage. Combined, these characteristics create numerous opportunities for restructuring the storage/memory hierarchy.


Descriptors :   *RANDOM ACCESS COMPUTER STORAGE , *NONVOLATILE MEMORIES , *MICROELECTROMECHANICAL SYSTEMS , PERFORMANCE(ENGINEERING) , CHIPS(ELECTRONICS) , INTEGRATED CIRCUITS , COMPLEMENTARY METAL OXIDE SEMICONDUCTORS , MAGNETIC DISKS


Subject Categories : Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE