AUGONNET, Cédric; NAMYST, Raymond

Métadonnées

Licence d’utilisation du document

AUGONNET, Cédric
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Efficient runtime systems for parallel architectures [RUNTIME]

NAMYST, Raymond
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Efficient runtime systems for parallel architectures [RUNTIME]

Langue

Communication dans un congrès

Ce document a été publié dans

2nd Workshop on Highly Parallel Processing on a Chip (HPPC 2008), 2008-08-26, Las Palmas de Gran Canaria. 2008

Résumé en anglais

Approaching the theoretical performance of heterogeneous multicore architectures, equipped with specialized accelerators, is a challenging issue. Unlike regular CPUs that can transparently access the whole global memory address range, accelerators usually embed local memory on which they perform all their computations using a specific instruction set. While many research efforts have been devoted to offloading parts of a program over such coprocessors, the real challenge is to find a programming model providing a unified view of all available computing units. In this paper, we present an original runtime system providing a high-level, unified execution model allowing seamless execution of tasks over the underlying heterogeneous hardware. The runtime is based on a hierarchical memory management facility and on a codelet scheduler. We demonstrate the efficiency of our solution with a LU decomposition for both homogeneous (3.8 speedup on 4 cores) and heterogeneous machines (95% efficiency). We also show that a "granularity aware" scheduling can improve execution time by 35%.< Réduire

Métadonnées

Partager cette publication !

Licence d’utilisation du document

A unified runtime system for heterogeneous multicore architectures

Langue

Ce document a été publié dans

Résumé en anglais

URI

Origine

Unités de recherche