Delay sensitivity-driven congestion mitigation for HPC systems
Delay sensitivity-driven congestion mitigation for HPC systems
复制标题
HPC 系统的延迟敏感度驱动的拥塞缓解
DOI:
10.1145/3447818.3460362
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Iyer, Ravishankar K.
中科院分区:
文献类型:
--
作者:
Patke, Archit;Jha, Saurabh;Qiu, Haoran;Brandt, Jim;Gentile, Ann;Greenseid, Joe;Kalbarczyk, Zbigniew;Iyer, Ravishankar K.
Modern high-performance computing (HPC) systems concurrently execute multiple distributed applications that contend for the high-speed network leading to congestion. Consequently, application runtime variability and suboptimal system utilization are observed in production systems. To address these problems, we propose Netscope, a congestion mitigation framework based on a novel delay sensitivity metric. Delay sensitivity of an application is used to quantify the impact of congestion on its runtime. Netscope uses delay sensitivity estimates to drive a congestion mitigation mechanism to selectively throttle applications that are less susceptible to congestion. We evaluate Netscope on two Cray Aries systems, including a production supercomputer, on common scientific applications. Our evaluation shows that Netscope has a low training cost and accurately estimates the impact of congestion on application runtime with a correlation between 0.7 and 0.9. Moreover, Netscope reduces application tail runtime increase by up to 16.3x while improving the median system utility by 12%.
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DOI:
10.1145/3295500.3356196
发表时间:
2019
期刊:
Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis
影响因子:
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作者:
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DOI:
10.1109/ipdps.2015.92
发表时间:
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期刊:
2015 IEEE International Parallel and Distributed Processing Symposium
影响因子:
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DOI:
--
发表时间:
2020
期刊:
International Conference for High Performance Computing, Networking, Storage and Analysis
影响因子:
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作者:
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DOI:
10.1109/ipdps47924.2020.00096
发表时间:
2020
期刊:
2020 IEEE International Parallel and Distributed Processing Symposium (IPDPS)
影响因子:
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作者:
A. Bhatele;Jayaraman J. Thiagarajan;Taylor L. Groves;Rushil Anirudh;Staci A. Smith;B. Cook;D. Lowenthal
通讯作者:
D. Lowenthal
DOI:
10.1145/2807591.2807600
发表时间:
2015-11
期刊:
SC15: International Conference for High Performance Computing, Networking, Storage and Analysis
影响因子:
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作者:
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通讯作者:
Nan Jiang;Larry R. Dennison;W. Dally