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If you like the idea of exploiting market inconsistencies to lower your costs then you will love this paper and video from the Hot Cloud '12 conference: Exploiting Hardware Heterogeneity within the Same Instance Type of Amazon EC2.
The conclusion is interesting and is a source of good guidance:
- Amazon EC2 uses diversified hardware to host the same type of instance.
- The hardware diversity results in performance variation.
- In general, the variation between the fast instances and slow instances can reach 40%. In some applications, the variation can even approach up to 60%.
- By selecting fast instances within the same instance type, Amazon EC2 users can acquire up to 30% of cost saving, if the fast instances have a relatively low probability.
The abstract:
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