NDLI: To checkpoint or not to checkpoint: Understanding energy-performance-I/O tradeoffs in HPC checkpointing

Content Provider	IEEE Xplore Digital Library
Author	El-Sayed, N. Schroeder, B.
Copyright Year	2014
Description	Author affiliation: Dept. of Comput. Sci., Univ. of Toronto, Toronto, ON, Canada (El-Sayed, N.; Schroeder, B.)
Abstract	As the scale of high-performance computing (HPC) clusters continues to grow, their increasing failure rates and energy consumption levels are emerging as two serious design concerns that are expected to become more challenging in future Exascale systems. Therefore, efficiently running systems at such large scales requires an in-depth understanding of the performance and energy costs associated with different fault tolerance techniques. The most commonly used fault tolerance method is checkpoint/restart. Over the years, checkpoint scheduling policies have been traditionally optimized and analysed from a performance perspective. Understanding the energy profile of these policies or how to optimize them for energy savings (rather than performance), remain not very well understood. In this paper, we provide an extensive analysis of the energy/ performance tradeoffs associated with an array of checkpoint scheduling policies, including policies that we propose, as well as few existing ones in the literature. We estimate the energy overhead for a given checkpointing policy, and provide simple formulas to optimize checkpoint scheduling for energy savings, with or without a bound on runtime. We then evaluate and compare the runtime-optimized and energy-optimized versions of the different methods using trace driven simulations based on failure logs from 10 production HPC clusters. Our results show ample room for achieving high energy savings with a low runtime overhead when using non-constant (adaptive) checkpointing methods that exploit characteristics of HPC failures. We also analyze the impact of energy-optimized checkpointing on the storage subsystem, identify policies that are more optimal for I/O savings, and study how to optimize for energy with a bound on I/O time.
Sponsorship	IEEE Comput. Soc.
Starting Page	93
Ending Page	102
File Size	302509
Page Count	10
File Format	PDF
ISBN	9781479955480
DOI	10.1109/CLUSTER.2014.6968778
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-22
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Runtime Checkpointing Mathematical model Equations Energy consumption Hazards Writing Performance High-performance computing Fault tolerance Checkpoint/Restart Energy-efficiency
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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