Publications de Ioannis Klonatos

Building Efficient Query Engines using High-Level Languages

We are currently witnessing a shift towards the use of high-level programming languages for systems development. These approaches collide with the traditional wisdom which calls for using low-level languages for building efficient software systems. This sh ...

EPFL2017

Squall: Scalable Real-time Analytics

Christoph Koch, Ioannis Klonatos, Aleksandar Vitorovic, Mohammad Dashti Rahmat Abadi, Mohamed Elsayed Mohamed Ahmed El Seidy, Daniel Espino Timón, Minh Khue Vu, Khayyam Mubariz Oglu Guliyev

Squall is a scalable online query engine that runs complex analytics in a cluster using skew-resilient, adaptive operators. Squall builds on state-of-the-art partitioning schemes and local algorithms, including some of our own. This paper presents the over ...

VLDB Endowment Inc.2016

How to Architect a Query Compiler

Christoph Koch, Ioannis Klonatos, Amir Shaikhha, Lionel Emile Vincent Parreaux, Mohammad Dashti Rahmat Abadi, Lewis Alexander Brown

This paper studies architecting query compilers. The state of the art in query compiler construction is lagging behind that in the compilers field. We attempt to remedy this by exploring the key causes of technical challenges in need of well founded soluti ...

2016

Building Efficient Query Engines in a High-Level Language

Christoph Koch, Ioannis Klonatos, Tiark Rompf, Hassan Chafi

In this paper we advocate that it is time for a radical rethinking of database systems design. Developers should be able to leverage high-level programming languages without having to pay a price in efficiency. To realize our vision of abstraction without ...

2014

Automatic Synthesis of Out-of-Core Algorithms

Viktor Kuncak, Christoph Koch, Ioannis Klonatos, Andres Nötzli, Andrej Spielmann

We present a system for the automatic synthesis of efficient algorithms specialized for a particular memory hierarchy and a set of storage devices. The developer provides two independent inputs: 1) an algorithm that ignores memory hierarchy and external st ...

ACM Press2013