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"A Multi-platform Study Of I/O Behavior On Petascale Supercomputers",.pdf

201506-HPDC-iologs.pdf

Preview of "A Multi-platform Study of I/O Behavior on Petascale Supercomputers",

🔗 Source: sdm.lbl.gov

📊 Size: 8.47 MB

👤 Author: Huong Luu

⬇️ Downloads: 50

Summary

Researchers analyzed Darshan logs from three supercomputers, capturing I/O behavior of over 1 million jobs across 6 years, to improve I/O performance and system utilization. Key findings include: most jobs have low I/O throughput, with 1/3 having throughput similar to a single USB flash drive; 3/4 of jobs spend more time on I/O metadata than data transfer; and 1/2 of apps have low throughput due to small data access or reliance on text files. The study suggests simple analysis and visualization procedures to identify I/O bottlenecks and criteria for system owners to identify underperforming apps, which could lead to performance improvements and increased user satisfaction.

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Description

Researchers analyzed Darshan logs from three supercomputers, capturing I/O behavior of over 1 million jobs across 6 years, to improve I/O performance and...

Technical Information

File Format: PDF
File Size: 8.47 MB
Pages: 12
Language: EN
Author: Huong Luu
Total Downloads: 50
Last Updated: 2 days ago

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