An experimental evaluation of the parallel I/O systems of the IBM SP and Intel Paragon using a production application
This paper presents the results of an experimental evaluation of the parallel I/O systems of the IBM SP and Intel Paragon. For the evaluation, we used a full, three-dimensional application code that is in production use for studying the nonlinear evolution of Jeans instability in self-gravitating gaseous clouds. The application performs I/O by using library routines that we developed and optimized separately for parallel I/O on the SP and Paragon. The I/O routines perform two-phase I/O and use the PIOFS file system on the SP and PFS on the Paragon. We studied the I/O performance for two different sizes of the application. We found that for the small case, I/O was faster on the SP, whereas for the large case, I/O took almost the same time on both systems. Communication required for I/O was faster on the Paragon in both cases. The highest read bandwidth obtained was 48 Mbytes/sec. and the highest write bandwidth obtained was 31.6 Mbytes/sec., both on the SP.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 273774
- Report Number(s):
- ANL/MCS-P--569-0296; CONF-9609206--1; ON: DE96013596
- Country of Publication:
- United States
- Language:
- English
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