Snapshots are useful tools for monitoring big distributed and parallel systems. In this paper, we adapt the well-known atomic snapshot abstraction to dynamic models with an unbounded number of participating processes. Our dynamic snapshot specification extends the API to allow changing the set of processes whose values should be returned from a scan operation. We introduce the ephemeral memory model, which consists of a dynamically changing set of nodes; when a node is removed, its memory can be immediately reclaimed. In this model, we present an algorithm for wait-free dynamic atomic snapshots.
@InProceedings{spiegelman_et_al:LIPIcs.OPODIS.2016.33, author = {Spiegelman, Alexander and Keidar, Idit}, title = {{Dynamic Atomic Snapshots}}, booktitle = {20th International Conference on Principles of Distributed Systems (OPODIS 2016)}, pages = {33:1--33:16}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-031-6}, ISSN = {1868-8969}, year = {2017}, volume = {70}, editor = {Fatourou, Panagiota and Jim\'{e}nez, Ernesto and Pedone, Fernando}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2016.33}, URN = {urn:nbn:de:0030-drops-71028}, doi = {10.4230/LIPIcs.OPODIS.2016.33}, annote = {Keywords: snapshots, shared memory, dynamic, ephemeral memory} }
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