High Performance Parallel Processing (HPPP) Microwave Computer Design Final Report CRADA No. TC-0824-94-G [electronic resource]
Saved in:
| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2018.
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| Subjects: |
| Abstract: | Massively parallel computers, such as the Cray T3D, have historically supported resource sharing solely with space sharing. In that method, multiple problems are solved by executing them on distinct processors. This project developed a dynamic time- and space-sharing scheduler to achieve greater interactivity and throughput than could be achieved with space-sharing alone. Cray Research Inc. (CRI) and LLNL worked together on the design, testing, and review aspects of this project. There were separate software deliverables. W implemented a general purpose scheduling system as per the design specifications. LLNL ported the Iocal gang scheduler software to the LLNL Cray T3D. In this approach, processors are allocated simultaneously to all components of a parallel program (in a "gang"). Program execution is preempted as needed to provide for interactivity. Programs are also relocated to different processors as needed to efficiently pack the computer's torus of processors. |
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| Item Description: | Published through SciTech Connect. 02/23/2018. "llnl--tr-746743" E. Illoken; C. C. Shang. |
| Physical Description: | 22 p. : digital, PDF file. |