Orna Agmon Ben-Yehuda

• My first name is Orna, my last name is {Agmon Ben-Yehuda}. Ladypine is the English translation of my first name.
• I am an adjunct senior lecturer in the CS faculty in the Technion.
• I am also a member of the CRI at the university of Haifa.
• Email: ladypine at (gmail com).
• Office: university of Haifa, education building, 666
• Office hours: Wednesdays, by appointlemnt
• My CS Faculty homepage
• Private hompage: ladypine.org
• Google Scholar Profile
• ACM Author page
• ORCID ID 0000-0002-6699-8999

Thesis

• PhD, under the supervision of Prof. Assaf Schuster, about Efficient, Non-Cooperative Sharing of Computing Resources.
• Incentives and General Welfare Functions in the Off-Line Cluster Scheduling Problem, Masters thesis in applied mathematics, under the supervision of Prof. Rann Smorodinsky.

Journal Papers

• The Rise of RaaS: the Resource-as-a-Service cloud

  Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir
  Communications of the ACM (CACM), July 2014

  slides, poster.
• Deconstructing Amazon EC2 Spot Instance Pricing

  Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir
  ACM Transactions on Economics and Computation,  vol 1, No. 3, Article 16, September 2013
  This is an extended version of the conference paper, including cloud trace driven simulations and a postmortem section, showing that Amazon's prices are no longer random.

Conference Papers

• Memory Elasticity Benchmark, Liran Funaro, Orna Agmon Ben-Yehuda and Assaf Schuster, systor 2020 best paper award.
• Bill Estimation in Simplified Memory Progressive Second Price Auctions. Danielle Movsowitz Davidow, Nir Lavi and Orna Agmon Ben-Yehuda. GECON 2019. Springer LNCS 11819. author's version.
• Efficient Multi-Resource, Multi-Unit VCG Auction. Liran Funaro, Orna Agmon Ben-Yehuda and Assaf Schuster. GECON 2019. Author's version, Springer LNCS 11819.
Stochastic resource allocation
Liran Funaro, Orna Agmon Ben-Yehuda, Assaf Schuster
VEE 2019 Proceedings of the 15th ACM SIGPLAN/SIGOPS International Conference on Virtual Execution Environments, 2019
• Preventing collusion in cloud computing auctions, Shunit Agmon, Orna Agmon Ben-Yehuda, Assaf schuster. GECON 2018. Tech report version.
• Why Are Repeated Auctions In RaaS Clouds Risky?, Danielle Movsowitz, Liran Funaro, Shunit Agmon, Orna Agmon Ben-Yehuda, Orr Dunkelman, GECON 2018. author's version of the paper, slides.
• Ginseng: Market-Driven LLC Allocation , Liran Funaro, Orna Agmon Ben-Yehuda and Assaf Schuster, Usenix ATC 2016.
• The nom Profit-Maximizing Operating System

  Muli Ben-Yehuda, Orna Agmon Ben-Yehuda, Dan Tsafrir
  VEE '16 Proceedings of the12th ACM SIGPLAN/SIGOPS International Conference on Virtual Execution Environments, 2016
• Ginseng: Market-Driven Memory Allocation, Orna Agmon Ben-Yehuda, Eyal Posener, Muli Ben-Yehuda, Assaf Schuster, Ahuva Mu'alem. In proceedings of VEE 2014.
Ginseng: market-driven memory allocation
Orna Agmon Ben-Yehuda, Eyal Posener, Muli Ben-Yehuda, Assaf Schuster, Ahuva Mu'alem
VEE '14 Proceedings of the 10th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments, 2014
• The nonkernel: A Kernel Designed for the Cloud Muli Ben-Yehuda, Omer Peleg, Orna Agmon Ben-Yehuda, Igor Smolyar, and Dan Tsafrir. In proceedings of the 4th Asia-Pacific Workshop on Systems (APSYS), 2013.
• Ginseng: Market-Driven Memory Allocation, Orna Agmon Ben-Yehuda, Eyal Posener, Muli Ben-Yehuda, Assaf Schuster, Ahuva Mu'alem. In proceedings of VEE 2014.
Ginseng: market-driven memory allocation
Orna Agmon Ben-Yehuda, Eyal Posener, Muli Ben-Yehuda, Assaf Schuster, Ahuva Mu'alem
VEE '14 Proceedings of the 10th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments, 2014
• The nonkernel: A Kernel Designed for the Cloud Muli Ben-Yehuda, Omer Peleg, Orna Agmon Ben-Yehuda, Igor Smolyar, and Dan Tsafrir. In proceedings of the 4th Asia-Pacific Workshop on Systems (APSYS), 2013.
• The Resource-as-a-Service (RaaS) Cloud, Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. In proceedings of the 4th USENIX Workshop on Hot Topics in Cloud Computing (HotCloud) 2012. (Acceptance ratio 32%=24/75). bibtex. Interview with Neil Savage in Communications of the ACM, August 2012.
• "ExPERT: Pareto-Efficient Task Replication on Grids and Clouds", Orna Agmon Ben-Yehuda, Assaf Schuster, Artyom Sharov, Mark Silberstein, Alexandru Iosup. IEEE International Parallel and Distributed Processing Symposium (IPDPS) 2012. (acceptance ratio 21%=118/569).
  Keywords: Scheduling; Cloud computing; Provisioning policies; Pareto scheduling; bags of tasks; Empirical performance analysis; Simulation-based scheduling.
• Deconstructing Amazon EC2 Spot Instance Pricing, Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. The 3rd IEEE International Conference on Cloud Computing Technology and Science (CloudCom 2011), Athens, Greece. Acceptance ratio: 24%. bibtex. An extended version appeared in ACM Transactions on Economics and Computation (TEAC).
  This paper builds on data from two websites which are no longer active. Their data, however, is still available from SpotWatch and CloudExchange. Caveat emptor: since Amazon introduced a second Linux instance type, the SpotWatch data holds the two price histories together, and they appear like two price bands (or like a wider band, in some cases). Also, since this work first appeared, Amazon radically changed their pricing mechanism, as can be seen on the last slide of the presentation, so prices no longer change according to the mechanism described int he paper.
• A 3D Collision Scheme for Compressible Media in a General Connectivity Lagrangian Formulation, Nir Bar-Gill, Orna Agmon, Nadav Har'el and Jonathan Nemirovski, Eighth International Conference on Structures Under Shock and Impact, 2004. Presented at the 7th International Conference on Computational Modelling of Free and Moving Boundary Problems, Albuquerque NM, November 2003.

Books

• Economics of Grids, Clouds, Systems, and Services 16th International Conference, GECON 2019, Leeds, UK, September 17-19, 2019, Proceedings Editors: Djemame, K., Altmann, J., Bañares, J.Á., Agmon Ben-Yehuda, O., Naldi, M. (Eds.)

Access to ACM papers

• research-article

  Stochastic resource allocation

  • Liran Funaro

    Technion, Israel

    ,
  • Orna Agmon Ben-Yehuda

    Technion, Israel

    ,
  • Assaf Schuster

    Technion, Israel

  April 2019pp 122-136 https://doi.org/10.1145/3313808.3313815

  Suboptimal resource utilization among public and private cloud providers prevents them from maximizing their economic potential. Long-term allocated resources are often idle when they might have been subleased for a short period. Alternatively, ...

• short-paper

  Collusion in Cloud Computing Auctions

  • Shunit Agmon

    Technion---Israel Institute of Technology, Haifa, Israel

    ,
  • Orna Agmon Ben-Yehuda

    Technion---Israel Institute of Technology, Haifa, Israel

    ,
  • Assaf Schuster

    Technion---Israel Institute of Technology, Haifa, Israel

  June 2018pp 113-113 https://doi.org/10.1145/3211890.3211911
• research-article

  The nom Profit-Maximizing Operating System

  • Muli Ben-Yehuda

    LightBits Labs, Haifa, Israel

    ,
  • Orna Agmon Ben-Yehuda

    Technion, Haifa, Israel

    ,
  • Dan Tsafrir

    Technion, Haifa, Israel

  March 2016pp 145-160 https://doi.org/10.1145/2892242.2892250

  In the near future, cloud providers will sell their users virtual machines with CPU, memory, network, and storage resources whose prices constantly change according to market-driven supply and demand conditions. Running traditional operating systems in ...

• research-article

  The rise of RaaS: the resource-as-a-service cloud

  • Orna Agmon Ben-Yehuda

    Israel Institute of Technology, Haifa, Israel

    ,
  • Muli Ben-Yehuda

    Stratocale, Herzliya, Israel

    ,
  • Assaf Schuster

    Israel Institute of Technology, Haifa, Israel

    ,
  • Dan Tsafrir

    Israel Institute of Technology, Haifa, Israel

  July 2014pp 76-84 https://doi.org/10.1145/2627422

  In the RaaS cloud, virtual machines trade in fine-grain resources on the fly.

• research-article

  Ginseng: market-driven memory allocation

  • Orna Agmon Ben-Yehuda

    Technion, Haifa, Israel

    ,
  • Eyal Posener

    Technion, Haifa, Israel

    ,
  • Muli Ben-Yehuda

    Technion and Stratoscale, Haifa, Israel

    ,
  • Assaf Schuster

    Technion, Haifa, Israel

    ,
  • Ahuva Mu'alem

    Ort Braude and Technion, Haifa, Israel

  March 2014pp 41-52 https://doi.org/10.1145/2576195.2576197

  Physical memory is the scarcest resource in today's cloud computing platforms. Cloud providers would like to maximize their clients' satisfaction by renting precious physical memory to those clients who value it the most. But real-world cloud clients ...

• research-article

  Deconstructing Amazon EC2 Spot Instance Pricing

  • Orna Agmon Ben-Yehuda

    Technion -- Israel Institute of Technology

    ,
  • Muli Ben-Yehuda

    Technion -- Israel Institute of Technology

    ,
  • Assaf Schuster

    Technion -- Israel Institute of Technology

    ,
  • Dan Tsafrir

    Technion -- Israel Institute of Technology

  September 2013pp 1-20 https://doi.org/10.1145/2509413.2509416

  Cloud providers possessing large quantities of spare capacity must either incentivize clients to purchase it or suffer losses. Amazon is the first cloud provider to address this challenge, by allowing clients to bid on spare capacity and by granting ...

• research-article

  The nonkernel: a kernel designed for the cloud

  • Muli Ben-Yehuda

    Technion---Israel Institute of Technology

    ,
  • Omer Peleg

    Technion---Israel Institute of Technology

    ,
  • Orna Agmon Ben-Yehuda

    Technion---Israel Institute of Technology

    ,
  • Igor Smolyar

    Technion---Israel Institute of Technology and Open University of Israel

    ,
  • Dan Tsafrir

    Technion---Israel Institute of Technology

  July 2013pp 1-7 https://doi.org/10.1145/2500727.2500737

  Infrastructure-as-a-Service (IaaS) cloud computing is causing a fundamental shift in the way computing resources are bought, sold, and used. We foresee a future whereby every CPU cycle, every memory word, and every byte of network bandwidth in the cloud ...

Invited Papers

• Attacks in the Resource-as-a-Service (RaaS) Cloud Context, Danielle Movsowitz, Orna Agmon Ben-Yehuda and Assaf Schuster. ICDCIT 2016. Bhubaneswar, Odisha, India. January 2016.

Posters

• Collusion in Cloud computing Auctions, Shunit Agmon, Orna Agmon Ben-Yehuda, Assaf Schuster. In SYSTOR 2018 (Extended Abstract) and Technion CS Research day.
  Collusion in Cloud Computing Auctions

  Shunit Agmon, Orna Agmon Ben-Yehuda, Assaf Schuster
  SYSTOR '18 Proceedings of the 11th ACM International Systems and Storage Conference, 2018
• The Resource-as-a-Service (RaaS) Cloud, Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. HotCloud 2012 and 2nd Technion Computer Engineering (TCE) Conference.
• "ExPERT: Pareto-Efficient Task Replication on Grids and Clouds", Orna Agmon Ben-Yehuda, Assaf Schuster, Artyom Sharov, Mark Silberstein, Alexandru Iosup. SYSTOR 2011 and 1st Technion Computer Engineering (TCE) Conference. Won the best poster award (tied) in SYSTOR 2011.

Tech Reports

• Efficient Multi-Resource, Multi-Unit VCG Auction. Liran Funaro, Orna Agmon Ben-Yehuda, Assaf Schuster. arXiv:1905.09014.
• Preventing Collusion in Cloud Computing Auctions, Shunit Agmon, Orna Agmon Ben-Yehuda, Assaf Schuster. Technion CS Technical report CS-2018-01.
• Ginseng: Market-Driven LLC Allocation, Liran Funaro, Orna Agmon Ben-Yehuda, Assaf Schuster. Technion CS Technical report CS-2016-03.
• Ginseng: Market-Driven Memory Allocation, Orna Agmon Ben-Yehuda, Eyal Posener, Muli Ben-Yehuda, Assaf Schuster, Ahuva Mu'alem. Technion CS Technical report CS-2013-07.
• Efficient, Non-Cooperative Sharing of Computing Resources, PhD thesis in computer science, under the supervision of Prof. Assaf Schuster.
• Deconstructing Amazon EC2 Spot Instance Pricing, Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. Technion CS Technical report CS-2011-09.
• ExPERT: Pareto-Efficient Task Replication on Grids and Clouds, Orna Agmon Ben-Yehuda, Assaf Schuster, Artyom Sharov, Mark Silberstein, Alexandru Iosup. Technion CS Technical report CS-2011-03.

Courses

Students

• Danielle Movsowitz (co-advised with Orr Dunkelman)
• Lee-Or Alon (co-advised with Sigal Oren)

Past Students

• Liran Funaro (co-advised with Assaf Schuster, PhD): Market Driven Multi-Resource allocation
• Boris Pismenny (co-advised with Assaf Schuster, MSc): Market Driven Queuing
• Eyal Posener (advised by Assaf Schuster): Dynamic Memory Allocation in Cloud Computers using Progressive Second Price Auction

Seminar Presentations

• Erez Petrank's seminar - odp (the only format which captures the presentation without bugs), pdf, and ppt - Syncronization Coverage.
• Assaf Schuster's seminar - communication efficient online detection_of network wide anomalies - pdf, odp.
• Dan Tsafrir's seminar - Difference Engine - pdf.

Community Service

• Vice-Chair of GECON 2021, GECON 2020, GECON 2019.
• PC member of APSYS 2021, SYSTOR 2021 (papers and posters), ACM SOCC 2020, USENIX ATC 2020, SYSTOR 2019, SC 2014 (posters), IPDPS 2014 (applications) , SC 2013 (posters, IPDPS 2013, SPSN 2011.
• Reviewer for ACM TEAC, IEEE Transactions on Parallel and Distributed Systems (TPDS), and IEEE Transactions on Cloud Computing (TCC).
• PC Chair of August Penguin 4, 2005.
• Sub-reviewer for KDD 2021, VEE 2014, HotCloud 2013, RESoLVE 2013, VEE 2013, FAST 2013, Eurosys 2012, SC 2011, USENIX ATC 2011, ICS 2010, HotCloud 2010.
• Used to be One of the managers of Haifux, the Haifa Linux Club.

Free Software

• Spotprice: A matlab simulator that creates price traces according to our understanding of Amazon EC2's algorithm in the past and present.
• A dynamic memory memcached: memcached that can kill memory slabs to free mmeory, and change its target memory on the fly. On Github.
• make_site: A package for creating static web pages with menu, using css and tables. Used by haifux.org.