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| Content Provider | ACM Digital Library |
|---|---|
| Author | Mannarswamy, Sandya Hundt, Robert Raman, Easwaran |
| Abstract | Structure layout optimizations seek to improve runtime performance by improving data locality and reuse. The structure layout heuristics for single-threaded benchmarks differ from those for multi-threaded applications running on multiprocessor machines, where the effects of false sharing need to be taken into account. In this paper we propose a technique for structure layout transformations for multithreaded applications that optimizes both for improved spatial locality and reduced false sharing, simultaneously. We develop a semi-automatic tool that produces actual structure layouts for multi-threaded programs and outputs the key factors contributing to the layout decisions. We apply this tool on the HP-UX kernel and demonstrate the effects of these transformations for a variety of already highly hand-tuned key structures with different set of properties. We show that na¨ýve heuristics can result in massive performance degradations on such a highly tuned application, while our technique generally avoids those pitfalls. The improved structures produced by our tool improve performance by up to 3.2% over a highly tuned baseline. |
| Starting Page | 271 |
| Ending Page | 282 |
| Page Count | 12 |
| File Format | |
| ISBN | 0769527647 |
| DOI | 10.1109/CGO.2007.36 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2007-03-11 |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
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