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To prevent rejecting requests, cloud platforms typically provision for their peak demand. Thus, a platform's idle capacity can be significant, as demand varies widely over multiple time scales, e.g., daily and seasonally. To reduce waste, platforms have begun to offer this idle capacity in the form of transient servers, which they may unilaterally revoke, for much lower prices—∼50–90% less—than on-demand...
This paper presents Bolt, a compiler-directed soft error recovery scheme, that provides fine-grained and guaranteed recovery without excessive performance and hardware overhead. To get rid of expensive hardware support, the compiler protects the architectural inputs during their entire liveness period by safely checkpointing the last updated value in idempotent regions. To minimize the performance...
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