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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bent, J. Gibson, G. Grider, G. McClelland, B. Nowoczynski, P. Nunez, J. Polte, M. Wingate, M. |
| Copyright Year | 2009 |
| Description | Author affiliation: Los Alamos Nat. Lab., Los Alamos, NM, USA (Polte, M.) || LANL Tech. Inf., Los Alamos Nat. Lab., Los Alamos, NM, USA (Bent, J.; Grider, G.; McClelland, B.; Nunez, J.; Wingate, M.) || Pittsburgh Supercomput. Center, Pittsburgh, PA, USA (Nowoczynski, P.) || Carnegie Mellon Univ., Pittsburgh, PA, USA (Gibson, G.) |
| Abstract | Parallel applications running across thousands of processors must protect themselves from inevitable system failures. Many applications insulate themselves from failures by checkpointing. For many applications, checkpointing into a shared single file is most convenient. With such an approach, the size of writes are often small and not aligned with file system boundaries. Unfortunately for these applications, this preferred data layout results in pathologically poor performance from the underlying file system which is optimized for large, aligned writes to non-shared files. To address this fundamental mismatch, we have developed a virtual parallel log structured file system, PLFS. PLFS remaps an application's preferred data layout into one which is optimized for the underlying file system. Through testing on PanFS, Lustre, and GPFS, we have seen that this layer of indirection and reorganization can reduce checkpoint time by an order of magnitude for several important benchmarks and real applications without any application modification. |
| Starting Page | 1 |
| Ending Page | 12 |
| File Size | 470877 |
| Page Count | 12 |
| File Format | |
| ISBN | 9781605587448 |
| DOI | 10.1145/1654059.1654081 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-11-14 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Association for Computing Machinery, Inc. (ACM) |
| Subject Keyword | parallel file systems and IO check-pointing high performance computing parallel computing |
| Content Type | Text |
| Resource Type | Article |
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