An Experimental Evaluation of the Parallel I/O Systems of the IBM SP and Intel Paragon Using a Production Application (1996)
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BibTeX
@MISC{Thakur96anexperimental,
author = {Rajeev Thakur and William Gropp and Ewing Lusk},
title = {An Experimental Evaluation of the Parallel I/O Systems of the IBM SP and Intel Paragon Using a Production Application},
year = {1996}
}
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Abstract
We present the results of an experimental evaluation of the parallel I/O systems of the IBM SP and Intel Paragon using a real three-dimensional parallel application code. This application, developed by scientists at the University of Chicago, simulates the gravitational collapse of self-gravitating gaseous clouds. It performs parallel I/O by using library routines that we developed and optimized separately for the SP and Paragon. The I/O routines perform two-phase I/O and use the parallel file systems PIOFS on the SP and PFS on the Paragon. We studied the I/O performance for two different sizes of the application. In the small case, we found that I/O was much faster on the SP. In the large case, open, close, and read operations were only slightly faster, and seeks were significantly faster, on the SP; whereas, writes were slightly faster on the Paragon. The communication required within our I/O routines was faster on the Paragon in both cases. The highest read bandwidth ...
