| Publisher | Tennessee Technological University | ||
|---|---|---|---|
| Format | 205.7KB PDF | Date added | 01 Jan 2008 |
| Topics | Processors, High Performance Computing | ||
| Downloads | 12 | ||
Cluster computing has become one of the most popular platforms for high-performance computing today. The recent popularity of multicore processors provides a flexible way to increase the computational capability of clusters. Although the system performance may improve with multicore processors in a cluster, I/O requests initiated by multiple cores may saturate the I/O bus, and furthermore increase the latency by issuing multiple non-contiguous disk accesses. This paper proposes an asymmetric collective I/O for multicore processors to improve multiple non-contiguous accesses. In the configuration, one core in each multicore processor is designated as the coordinator, and others serve as computing cores. The coordinator is responsible for aggregating I/O operations from computing cores and submitting a contiguous request.
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