2 Search Results for "Szekeres, Adriana"

Document
DOI: 10.4230/LIPIcs.DISC.2023.9
The FIDS Theorems: Tensions Between Multinode and Multicore Performance in Transactional Systems

Authors: Naama Ben-David, Gal Sela, and Adriana Szekeres

Published in: LIPIcs, Volume 281, 37th International Symposium on Distributed Computing (DISC 2023)

Abstract
Traditionally, distributed and parallel transactional systems have been studied in isolation, as they targeted different applications and experienced different bottlenecks. However, modern high-bandwidth networks have made the study of systems that are both distributed (i.e., employ multiple nodes) and parallel (i.e., employ multiple cores per node) necessary to truly make use of the available hardware. In this paper, we study the performance of these combined systems and show that there are inherent tradeoffs between a system’s ability to have fast and robust distributed communication and its ability to scale to multiple cores. More precisely, we formalize the notions of a fast deciding path of communication to commit transactions quickly in good executions, and seamless fault tolerance that allows systems to remain robust to server failures. We then show that there is an inherent tension between these two natural distributed properties and well-known multicore scalability properties in transactional systems. Finally, we show positive results; it is possible to construct a parallel distributed transactional system if any one of the properties we study is removed.
Cite as

Naama Ben-David, Gal Sela, and Adriana Szekeres. The FIDS Theorems: Tensions Between Multinode and Multicore Performance in Transactional Systems. In 37th International Symposium on Distributed Computing (DISC 2023). Leibniz International Proceedings in Informatics (LIPIcs), Volume 281, pp. 9:1-9:24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@InProceedings{bendavid_et_al:LIPIcs.DISC.2023.9,
  author =	{Ben-David, Naama and Sela, Gal and Szekeres, Adriana},
  title =	{{The FIDS Theorems: Tensions Between Multinode and Multicore Performance in Transactional Systems}},
  booktitle =	{37th International Symposium on Distributed Computing (DISC 2023)},
  pages =	{9:1--9:24},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-301-0},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{281},
  editor =	{Oshman, Rotem},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2023.9},
  URN =		{urn:nbn:de:0030-drops-191355},
  doi =		{10.4230/LIPIcs.DISC.2023.9},
  annote =	{Keywords: transactions, distributed systems, parallel systems, impossibility results}
}
Document
DOI: 10.4230/LIPIcs.DISC.2017.36
Recovering Shared Objects Without Stable Storage

Authors: Ellis Michael, Dan R. K. Ports, Naveen Kr. Sharma, and Adriana Szekeres

Published in: LIPIcs, Volume 91, 31st International Symposium on Distributed Computing (DISC 2017)

Abstract
This paper considers the problem of building fault-tolerant shared objects when processes can crash and recover but lose their persistent state on recovery. This Diskless Crash-Recovery (DCR) model matches the way many long-lived systems are built. We show that it presents new challenges, as operations that are recorded at a quorum may not persist after some of the processes in that quorum crash and then recover. To address this problem, we introduce the notion of crash-consistent quorums, where no recoveries happen during the quorum responses. We show that relying on crash-consistent quorums enables a recovery procedure that can recover all operations that successfully finished. Crash-consistent quorums can be easily identified using a mechanism we term the crash vector, which tracks the causal relationship between crashes, recoveries, and other operations. We apply crash-consistent quorums and crash vectors to build two storage primitives. We give a new algorithm for multi-writer, multi-reader atomic registers in the DCR model that guarantees safety under all conditions and termination under a natural condition. It improves on the best prior protocol for this problem by requiring fewer rounds, fewer nodes to participate in the quorum, and a less restrictive liveness condition. We also present a more efficient single-writer, single-reader atomic set - a virtual stable storage abstraction. It can be used to lift any existing algorithm from the traditional Crash-Recovery model to the DCR model. We examine a specific application, state machine replication, and show that existing diskless protocols can violate their correctness guarantees, while ours offers a general and correct solution.
Cite as

Ellis Michael, Dan R. K. Ports, Naveen Kr. Sharma, and Adriana Szekeres. Recovering Shared Objects Without Stable Storage. In 31st International Symposium on Distributed Computing (DISC 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 91, pp. 36:1-36:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@InProceedings{michael_et_al:LIPIcs.DISC.2017.36,
  author =	{Michael, Ellis and Ports, Dan R. K. and Sharma, Naveen Kr. and Szekeres, Adriana},
  title =	{{Recovering Shared Objects Without Stable Storage}},
  booktitle =	{31st International Symposium on Distributed Computing (DISC 2017)},
  pages =	{36:1--36:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-053-8},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{91},
  editor =	{Richa, Andr\'{e}a},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.DISC.2017.36},
  URN =		{urn:nbn:de:0030-drops-80055},
  doi =		{10.4230/LIPIcs.DISC.2017.36},
  annote =	{Keywords: asynchronous system, fault-tolerance, crash-recovery, R/W register, state machine replication}
}
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