Input/output behavior of supercomputing applications
Technical Report
·
OSTI ID:5693079
The collection and analysis of supercomputer I/O traces and their use in a collection of buffering and caching simulations are described. This serves two purposes. First, it gives a model of how individual applications running on supercomputers request file system I/O, allowing system designer to optimize I/O hardware and file system algorithms to that model. Second, the buffering simulations show what resources are needed to maximize the CPU utilization of a supercomputer given a very bursty I/O request rate. By using read-ahead and write-behind in a large solid stated disk, one or two applications were sufficient to fully utilize a Cray Y-MP CPU.
- Research Organization:
- California Univ., Berkeley, CA (USA)
- OSTI ID:
- 5693079
- Report Number(s):
- N-91-18633; NASA-CR--187956; NAS--1.26:187956; UCB/CSD--91/616; CNN: NAG2-591
- Country of Publication:
- United States
- Language:
- English
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