The personalized all-to-all collective exchange is one of the most challenging
communication patterns in HPC applications in terms of performance and scalability. In the …

The Power7 IH (P7IH) is one of IBM's latest generation of supercomputers. Like most
modern parallel machines, it has a hierarchical organization consisting of simultaneous …

Simulações computacionais, em geral, são compostas pelo encadeamento de aplicações
científicas e executadas em ambientes de processamento de alto desempenho. Tais …

Un très grand merci aussi à mes directrices de thèse pour m 'avoir encouragée à faire cette
thèse, pour m 'avoir encadrée afin que j 'arrive au bout de ces 3 ans avec des résultats à …

Large-scale parallel machines are programmed mainly with the single program, multiple
data (SPMD) model of parallelism. This model has advantages of scalability and simplicity …

Scientific applications have an increasing need of resources and many grand scientific
challenges require exascale compute capabilities to be addressed. One major concern to …

As performance gains in sequential programming have stagnated due to power constraints,
parallel computing has become the primary tool for increasing performance. Parallel …

To provide increasing computational power for numerical simulations, supercomputers
evolved and arenow more and more complex to program. Indeed, after the appearance of …

Collective operations in the OpenSHMEM programming model are defined over an active
set, which is a grou** of (PEs) based on a triple of information including the starting PE, a …

Due to the available concurrency in modern-day supercomputers, the complexity of
develo** efficient parallel applications for these platforms has grown rapidly in the last …