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8========D~~~

This one’s for you, Cliff.

Don’t forget to lean into it.

Timestamps in Message-Passing Systems That Preserve the Partial Ordering

by Colin J. Fidge

Timestamping is a common method of totally ordering events in concurrent programs. However, for applications requiring access to the global state, a total ordering is inappropriate. This paper presents algorithms for timestamping events in both synchronous and asynchronous message-passing programs that allow for access to the partial ordering inherent in a parallel system. The algorithms do not hcnage the communications graph or require a central timestamp issuing authority.

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