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Parallel execution of parsed query based on a concurrency level corresponding to an average number of available worker threads

Publications associées (68)

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Parallel algorithms and efficient implementation techniques for finite element approximations

Radu Popescu

In this thesis we study the efficient implementation of the finite element method for the numerical solution of partial differential equations (PDE) on modern parallel computer archi- tectures, such as Cray and IBM supercomputers. The domain-decomposition ...

EPFL2013

Execution Synthesis: A Technique for Automating the Debugging of Software

Cristian Zamfir

Debugging real systems is hard, requires deep knowledge of the target code, and is time-consuming. Bug reports rarely provide sufficient information for debugging, thus forcing developers to turn into detectives searching for an explanation of how the prog ...

EPFL2013

Collaborative Monocular SLAM with Multiple Micro Aerial Vehicles

Davide Scaramuzza

This paper presents a framework for collaborative localization and mapping with multiple Micro Aerial Vehicles (MAVs) in unknown environments. Each MAV estimates its motion individually using an onboard, monocular visual odometry algorithm. The system of M ...

2013

Scalability of write-ahead logging on multicore and multisocket hardware

Anastasia Ailamaki, Frederick Ryan Johnson, Manoussos Gavriil Athanassoulis, Ippokratis Pandis, Radu Ioan Stoica

The shift to multi-core and multi-socket hardware brings new challenges to database systems, as the software parallelism determines performance. Even though database systems traditionally accommodate simultaneous requests, a multitude of synchronization ba ...

2012

Integrated Kernel Partitioning and Scheduling for Coarse-Grained Reconfigurable Arrays

Giovanni Ansaloni

Coarse-grained reconfigurable arrays (CGRAs) are a promising class of architectures conjugating flexibility and efficiency. Devising effective methodologies to map applications onto CGRAs is a challenging task, due to their parallel execution paradigm and ...

Institute of Electrical and Electronics Engineers2012

Transaction Polymorphism

Rachid Guerraoui, Vincent Gramoli

Concurrent implementations of abstract types usually rely on lock-free primitives or locks and are highly tuned to support a finite set of efficient operations. However, it is very hard to extend such types for specific needs by adding new operations. The ...

2011

Democratizing Transactional Programming

Rachid Guerraoui, Vincent Gramoli

The Transaction abstraction is arguably one of the most appealing middleware paradigms. It lies typically between the programmer of a concurrent or distributed application on the one hand, and the operating system with the underlying network on the other h ...

Springer-Verlag Berlin2011

Embarrassingly Scalable Database Systems

Anastasia Ailamaki

From Wikipedia-An embarrassingly parallel workload (or embarrassingly parallel problem) is one for which little or no effort is required to separate the problem into a number of parallel tasks. This is often the case where there exists no dependency (or co ...

2011

Why STM can be more than a Research Toy

Rachid Guerraoui, Vincent Gramoli, Aleksandar Dragojevic, Pascal Felber

Software Transactional Memory (STM) promises to simplify concurrent programming without requiring specific hardware support. Yet, STM’s credibility lies on the extent to which it enables to leverage multicores and outperform sequential code. A recent CACM ...

2011

OpenMP parallelization of the three-dimensional distinct lattice spring model

Jiannong Fang, Liang Sun, Gaofeng Zhao, Jianbo Zhu

This paper presents the OpenMP parallel implementation of the Distinct Lattice Spring Model (DLSM). The motivation of this study is to reduce the computing time and increase the computational capacity of the DLSM code. Firstly, the basic theory of DLSM is ...

Crc Press-Taylor & Francis Group, 6000 Broken Sound Parkway Nw, Ste 300, Boca Raton, Fl 33487-2742 Usa2010