Ioannis (Yannis) Koltsidas  Ioannis (Yannis) Koltsidas photo       

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Research Staff & Technical Leader - Storage & Systems Research
IBM Research, Zurich, Switzerland
  +41dash44dash724dash85dash63

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2017

FlashNet: Flash/Network Stack Co-design
Animesh Trivedi, Nikolas loannou, Bernard Metzler, Patrick Stuedi, Jonas Pfefferle, Ioannis Koltsidas, Kornilios Kourtis, Thomas R. Gross
Proceedings of the 10th ACM International Systems and Storage Conference, pp. 15:1--15:14, ACM, 2017
Best paper award

Crail: A High-Performance I/O Architecture for Distributed Data Processing.
Patrick Stuedi, Animesh Trivedi, Jonas Pfefferle, Radu Stoica, Bernard Metzler, Nikolas Ioannou, Ioannis Koltsidas
IEEE Data Eng. Bull. 40(1), 38--49, 2017


2016

On The [Ir]relevance of Network Performance for Data Processing
Animesh Trivedi, Patrick Stuedi, Jonas Pfefferle, Radu Stoica, Bernard Metzler, Nikolas Ioannou, Ioannis Koltsidas
8th USENIX Workshop on Hot Topics in Cloud Computing (HotCloud 16), USENIX Association, 2016


2015

A Hybrid I/O Virtualization Framework for RDMA-capable Network Interfaces.
Jonas Pfefferle, Patrick Stuedi, Animesh Trivedi, Bernard Metzler, Ioannis Koltsidas, Thomas R. Gross
International Conference on Virtual Execution Environments (VEE), 2015

Seamlessly integrating disk and tape in a multi-tiered distributed file system.
Ioannis Koltsidas, Slavisa Sarafijanovic, Martin Petermann, Nils Haustein, Harald Seipp, Robert Haas, Jens Jelitto, Thomas Weigold, Edwin R. Childers, David Pease, Evangelos Eleftheriou
31st IEEE International Conference on Data Engineering (ICDE 2015)

SALSA: treating the weaknesses of low-cost Flash in software
Nikolas Ioannou, Ioannis Koltsidas, Roman Pletka, Sa\vsa Tomi\'c, Radu Stoica, Thomas Weigold, Evangelos Eleftheriou
Non-Volatile Memory Workshop, 2015


2014

PSS: A prototype storage subsystem based on PCM
Ioannis Koltsidas, Peter Mueller, Roman Pletka, Thomas Weigold, Evangelos Eleftheriou, Maria Varsamou, Athina Ntalla, Elina Bougioukou, Aspasia Palli, Theodore Antonakopoulos
5th Non-Volatile Memories Workshop (NVMW2014)

Software defined just-in-time caching in an enterprise storage system
S Seshadri, PH Muench, L Chiu, I Koltsidas, N Ioannou, R Haas, Y Liu, M Mei, S Blinick
IBM Journal of Research and Development 58(2), 1--13, IBM, 2014

Flash-Conscious Cache Population for Enterprise Database Workloads
Hyojun Kim, Ioannis Koltsidas, Nikolas Ioannou, Sangeetha Seshadri, Paul Muech, Clement Dickey, and Lawrence Chiu
Fifth International Workshop on Accelerating Data Management Systems Using Modern Processor and Storage Architectures, VLDB, 2014


2013

Implementation and Implications of a Stealth Hard-Drive Backdoor
Jonas Zaddach, Anil Kurmus, Davide Balzarotti, Erik-Oliver Blass, Aur\'elien Francillon, Travis Goodspeed, Moitrayee Gupta, Ioannis Koltsidas
Proceedings of Annual Computer Security Applications Conference (ACSAC), pp. 279--288, 2013
accepted for publication


2011

Subsystem and System-level Implications of PCM
Robert Haas, Xiao-Yu Hu, Ioannis Koltsidas, Roman A Pletka
European\Phase Change and Ovonics Symposium, 2011

System co-design and data management for flash devices
Philippe Bonnet, Luc Bouganim, Ioannis Koltsidas, Stratis D Viglas, others
Proc. VLDB, 2011

Data management over flash memory
Ioannis Koltsidas, Stratis D Viglas
Proceedings of the 2011 ACM SIGMOD International Conference on Management of data, pp. 1209--1212

Spatial data management over flash memory
Ioannis Koltsidas, Stratis D Viglas
Advances in Spatial and Temporal Databases, pp. 449--453, Springer, 2011

GPFS-SNC: An enterprise storage framework for virtual-machine clouds
Karan Gupta, Reshu Jain, Ioannis Koltsidas, Himabindu Pucha, Prasenjit Sarkar, Mark Seaman, Dinesh Subhraveti
IBM Journal of Research and Development 55(6), 2--1, IBM, 2011

Designing a flash-aware two-level cache
Ioannis Koltsidas, Stratis D Viglas
Advances in Databases and Information Systems, pp. 153--169, 2011


2010

Flash-enabled database storage
Ioannis Koltsidas, Stratis D Viglas
Data Engineering Workshops (ICDEW), 2010 IEEE 26th International Conference on, pp. 309--312

Flashing up the storage hierarchy
Ioannis Koltsidas
2010 - era.lib.ed.ac.uk, The University of Edinburgh


2009

The case for flash-aware multi-level caching
Ioannis Koltsidas, Stratis D Viglas
University of Edinburgh Technical Report EDI-INF-RR-1319, 2009

Utility-aware multi-device caching
Ioannis Koltsidas, Stratis D Viglas
University of Edinburgh Technical Report EDI-INF-RR-1331, 2009


2008

Sorting hierarchical data in external memory for archiving
Ioannis Koltsidas, Heiko M\"uller, Stratis D Viglas
Proceedings of the VLDB Endowment 1(1), 1205--1216, VLDB Endowment, 2008

XArch: archiving scientific and reference data
Heiko M\"uller, Peter Buneman, Ioannis Koltsidas
Proceedings of the 2008 ACM SIGMOD international conference on Management of data, pp. 1295--1298

Flashing up the storage layer
Ioannis Koltsidas, Stratis D Viglas
Proceedings of the VLDB Endowment 1(1), 514--525, VLDB Endowment, 2008