In Constraint Programming (CP) a portfolio solver combines a variety of different constraint solvers for solving a given problem. This fairly recent approach enables to significantly boost the performance of single solvers, especially when multicore architectures are exploited. In this work we give a brief overview of the portfolio solver sunny-cp, and we discuss its performance in the MiniZinc...

Mission-critical systems require a dependable operation during their lifetime. However, the current ongoing aggressive scaling of technology has resulted in increasing reliability issues. Dependability of such systems has become a major concern in the design process. In this work we aim to enhance the dependability of heterogeneous Multi-Processor System-on-Chips (MPSoCs) by introducing a syste...

Efficient parallelization of genetic algorithms (GAs) on state-of-the-art multi-threading or many-threading platforms is a challenge due to the difficulty of schedulation of hardware resources regarding the concurrency of threads. In this paper, for resolving the problem, a novel method is proposed, which parallelizes the GA by designing three concurrent kernels, each of which running some depe...

Reducing power consumption, improving designer productivity and mitigating thermal effects are grand challenges for future CMOS-based designs in the nanometer regime [1]. Solving these challenges requires a power estimation methodology that is temperature aware and simple, fast and accurate. In this paper, we present such a power estimation methodology that utilizes data from different levels o...

This paper presents a method to efficiently place MPI processes on multicore machines. Since MPI implementations often feature efficient supports for both shared-memory and network communication, an adequate placement policy is a crucial step to improve applications performance. As a case study, we show the results obtained for several NAS computing kernels and explain how the policy influences...

The increased usages of multi-core systems diminish percore complexity and also demand several parallel design and test technologies. This paper introduces a novel test access mechanism (TAM) for parallel testing of multiple identical cores. Instead of typical test response data from the cores, the test output data used in this paper are the majority values extracted from the typical test respo...

In this paper we consider parallel algorithms to partition an array with respect to a pivot. We focus on implementations for current widely available multi-core architectures. After reviewing existing algorithms, we propose a modification to obtain the minimal number of comparisons. We have implemented these algorithms and drawn an experimental comparison.

CHIMERA is a multi-dimensional radiation hydrodynamics code designed to study core-collapse supernovae. The code is made up of three essentially independent parts: hydrodynamics, nuclear burning, and a neutrino transport solver combined within an operator-split approach. The multi-physics nature of the problem, and the specific implementation of that physics in CHIMERA, provide a rather straigh...