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 a PhD candidate, under the supervision of Prof. Assaf Schuster.
• Research topic: Efficient, Non-Cooperative Sharing of Computing Resources.
• PhD Seminar: 24/4/2013, 15:00, Taub 601.
• Email: ladypine at cs (you know the rest: technion, ac, il).
• Office: 327
• Office phone number: 04-8294309
• Private homepage: LADYPINE
• Google Scholar Profile: Orna Agmon Ben-Yehuda
• ACM Author page

Journal Papers

• Deconstructing Amazon EC2 Spot Instance Pricing", Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. Accepted to ACM Transactions on Economics and Computation (TEAC). Author's version
  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

• 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 will appear 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  This paper builds on data from two websites which are no longer active.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.

Posters

• 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

• "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.
• Incentives and General Welfare Functions in the Off-Line Cluster Scheduling Problem, Masters thesis in applied mathematics, under the supervision of Prof. Rann Smorodinsky.

Presentations

• List of Haifux presentations
• The Resource-as-a-Service (RaaS) Cloud, Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. Microsoft (China), Shanghai, 21/05/2012. Electronic-Commerce Day 2012, 30/05/2012. 12-13/06/2012, HotCloud 2012.
• "ExPERT: Pareto-Efficient Task Replication on Grids and Clouds", Orna Agmon Ben-Yehuda, Assaf Schuster, Artyom Sharov, Mark Silberstein, Alexandru Iosup. IPDPS 2012. slides in pdf.
• "Deconstructing Amazon EC2 Spot Instance Pricing", Orna Agmon Ben-Yehuda, Muli Ben-Yehuda, Assaf Schuster, Dan Tsafrir. Haifux, 26/09/2011. slides in pdf. HaifaU, 16/11/2011. CSL Lunch, Technion, 17/11/2011. CloudCom, Athens, 30/11/2011, slides in pdf. Wiezmann Inst., 16/04/2012. Microsoft (China), Shanghai, 21/05/2012. E-commerce seminar, Technion, 10/06/2012.slides in pdf.
• "Anonymity and Privacy", at Kiryat-Haim high school, 25/09/2011. Slides in pdf and sources in odp.
• "Sharing the Burden: Energy Incentives for Users", at the 4th Symposium on Future Trends in Service-Oriented Computing, June 2009. Video and slides.
• Incentives and General Welfare Functions in the Off-Line Cluster Scheduling Problem, MSc seminar.
• Lagrange Sliding Colliding Interfaces at Domain Decomposition 18.

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

• One of the managers of Haifux, the Haifa Linux Club.
• PC member of IPDPS 2013, SPSN 2011.
• PC Chair of August Penguin 4, 2005.
• Sub-reviewer for HotCloud 2013, RESoLVE 2013, VEE 2013, FAST 2013, Eurosys 2012, SC 2011, USENIX ATC 2011, ICS 2010, HotCloud 2010.

Free Software

• 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.