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| Content Provider | ACM Digital Library |
|---|---|
| Author | LeBlanc, Thomas J. Scott, Michael L. Brown, Christopher M. |
| Abstract | For three years, members of the Computer Science Department at the University of Rochester have used a collection of BBN Butterflyâ„¢ Parallel Processors to conduct research in parallel systems and applications. For most of that time, Rochester's 128-node machine has had the distinction of being the largest shared-memory multiprocessor in the world. In the course of our work with the Butterfly we have ported three compilers, developed five major and several minor library packages, built two different operating systems, and implemented dozens of applications. Our experience clearly demonstrates the practicality of large-scale shared-memory multiprocessors, with non-uniform memory access times. It also demonstrates that the problems inherent in programming such machines are far from adequately solved. Both locality and Amdahl's law become increasingly important with a very large number of nodes. The availability of multiple programming models is also a concern; truly general-purpose parallel computing will require the development of environments that allow programs written under different models to coexist and interact. Most important, there is a continuing need for high-quality programming tools; widespread acceptance of parallel machines will require the development of programming environments comparable to those available on sequential computers. |
| Starting Page | 161 |
| Ending Page | 172 |
| Page Count | 12 |
| File Format | |
| ISSN | 03621340 15581160 |
| DOI | 10.1145/62116.62131 |
| Journal | ACM SIGPLAN Notices (SIGP) |
| Volume Number | 23 |
| Issue Number | 9 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 1983-05-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Graphics and Computer-Aided Design Software |
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