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Documents authored by Deligiannis, Pantazis


Document
Reliable State Machines: A Framework for Programming Reliable Cloud Services

Authors: Suvam Mukherjee, Nitin John Raj, Krishnan Govindraj, Pantazis Deligiannis, Chandramouleswaran Ravichandran, Akash Lal, Aseem Rastogi, and Raja Krishnaswamy

Published in: LIPIcs, Volume 134, 33rd European Conference on Object-Oriented Programming (ECOOP 2019)


Abstract
Building reliable applications for the cloud is challenging because of unpredictable failures during a program’s execution. This paper presents a programming framework, called Reliable State Machines (RSMs), that offers fault-tolerance by construction. In our framework, an application comprises several (possibly distributed) RSMs that communicate with each other via messages, much in the style of actor-based programming. Each RSM is fault-tolerant by design, thereby offering the illusion of being "always-alive". An RSM is guaranteed to process each input request exactly once, as one would expect in a failure-free environment. The RSM runtime automatically takes care of persisting state and rehydrating it on a failover. We present the core syntax and semantics of RSMs, along with a formal proof of failure-transparency. We provide a .NET implementation of the RSM framework for deploying services to Microsoft Azure. We carry out an extensive performance evaluation on micro-benchmarks to show that one can build high-throughput applications with RSMs. We also present a case study where we rewrite a significant part of a production cloud service using RSMs. The resulting service has simpler code and exhibits production-grade performance.

Cite as

Suvam Mukherjee, Nitin John Raj, Krishnan Govindraj, Pantazis Deligiannis, Chandramouleswaran Ravichandran, Akash Lal, Aseem Rastogi, and Raja Krishnaswamy. Reliable State Machines: A Framework for Programming Reliable Cloud Services. In 33rd European Conference on Object-Oriented Programming (ECOOP 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 134, pp. 18:1-18:29, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


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@InProceedings{mukherjee_et_al:LIPIcs.ECOOP.2019.18,
  author =	{Mukherjee, Suvam and Raj, Nitin John and Govindraj, Krishnan and Deligiannis, Pantazis and Ravichandran, Chandramouleswaran and Lal, Akash and Rastogi, Aseem and Krishnaswamy, Raja},
  title =	{{Reliable State Machines: A Framework for Programming Reliable Cloud Services}},
  booktitle =	{33rd European Conference on Object-Oriented Programming (ECOOP 2019)},
  pages =	{18:1--18:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-111-5},
  ISSN =	{1868-8969},
  year =	{2019},
  volume =	{134},
  editor =	{Donaldson, Alastair F.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.ECOOP.2019.18},
  URN =		{urn:nbn:de:0030-drops-108101},
  doi =		{10.4230/LIPIcs.ECOOP.2019.18},
  annote =	{Keywords: Fault tolerance, Cloud computing, Actor framework}
}
Document
Automatic Verification of Data Race Freedom in Device Drivers

Authors: Pantazis Deligiannis and Alastair F. Donaldson

Published in: OASIcs, Volume 43, 2014 Imperial College Computing Student Workshop


Abstract
Device drivers are notoriously hard to develop and even harder to debug. They are typically prone to many serious issues such as data races. In this paper, we present static pair-wise lock set analysis, a novel sound verification technique for proving data race freedom in device drivers. Our approach not only avoids reasoning about thread interleavings, but also allows the reuse of existing successful sequential verification techniques.

Cite as

Pantazis Deligiannis and Alastair F. Donaldson. Automatic Verification of Data Race Freedom in Device Drivers. In 2014 Imperial College Computing Student Workshop. Open Access Series in Informatics (OASIcs), Volume 43, pp. 36-39, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2014)


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@InProceedings{deligiannis_et_al:OASIcs.ICCSW.2014.36,
  author =	{Deligiannis, Pantazis and Donaldson, Alastair F.},
  title =	{{Automatic Verification of Data Race Freedom in Device Drivers}},
  booktitle =	{2014 Imperial College Computing Student Workshop},
  pages =	{36--39},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-76-7},
  ISSN =	{2190-6807},
  year =	{2014},
  volume =	{43},
  editor =	{Neykova, Rumyana and Ng, Nicholas},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.ICCSW.2014.36},
  URN =		{urn:nbn:de:0030-drops-47715},
  doi =		{10.4230/OASIcs.ICCSW.2014.36},
  annote =	{Keywords: Device Drivers, Verification, Concurrency, Data Races}
}
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