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2010
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Scalable parallel I/O alternatives for massively parallel partitioned solver systems

9 years 7 months ago
Scalable parallel I/O alternatives for massively parallel partitioned solver systems
Abstract--With the development of high-performance computing, I/O issues have become the bottleneck for many massively parallel applications. This paper investigates scalable parallel I/O alternatives for massively parallel partitioned solver systems. Typically such systems have synchronized "loops" and will write data in a well defined block I/O format consisting of a header and data portion. Our target use for such an parallel I/O subsystem is checkpoint-restart where writing is by far the most common operation and reading typically only happens during either initialization or during a restart operation because of a system failure. We compare four parallel I/O strategies: 1 POSIX File Per Processor (1PFPP), a synchronized parallel IO library (syncIO), "Poor-Man's" Parallel I/O (PMPIO) and a new "reduced blocking" strategy (rbIO). Performance tests using real CFD solver data from PHASTA (an unstructured grid finite element Navier-Stokes solver [1]) s...
Jing Fu, Ning Liu, Onkar Sahni, Kenneth E. Jansen,
Added 05 Mar 2011
Updated 05 Mar 2011
Type Journal
Year 2010
Where IPPS
Authors Jing Fu, Ning Liu, Onkar Sahni, Kenneth E. Jansen, Mark S. Shephard, Christopher D. Carothers
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