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Home » Cloud Spot Markets are Not Sustainable: The Case for Transient Guarantees
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Cloud Spot Markets are Not Sustainable: The Case for Transient Guarantees

Authors: 

Supreeth Subramanya, Amr Rizk, and David Irwin, University of Massachusetts Amherst

Abstract: 

Computational spot markets enable users to bid on servers, and then continuously allocates them to the highest bidder: if a user is “out bid” for a server, the market revokes it and re-allocates it to the new highest bidder. Spot markets are common when trading commodities to balance real-time supply and demand—cloud platforms use them to sell their idle capacity, which varies over time. However, server-time differs from other commodities in that it is “stateful”: losing a spot server incurs an overhead that decreases the useful work it performs. Thus, variations in the spot price actually affect the inherent value of server-time bought in the spot market. As the spot market matures, we argue that price volatility will significantly decrease the value of spot servers. Thus, somewhat counter-intuitively, spot markets may not maximize the value of idle server capacity. To address the problem, we propose a more sustainable alternative that offers a variable amount of idle capacity to users for a fixed price, but with transient guarantees

Supreeth Subramanya, University of Massachusetts Amherst

Amr Rizk, University of Massachusetts Amherst

David Irwin, University of Massachusetts Amherst

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BibTeX
@inproceedings {196316,
author = {Supreeth Subramanya and Amr Rizk and David Irwin},
title = {Cloud Spot Markets are Not Sustainable: The Case for Transient Guarantees},
booktitle = {8th USENIX Workshop on Hot Topics in Cloud Computing (HotCloud 16)},
year = {2016},
address = {Denver, CO},
url = {https://www.usenix.org/conference/hotcloud16/workshop-program/presentation/subramanya},
publisher = {USENIX Association},
month = jun,
}
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