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2 TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2 2018

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Design and performance evaluation of a Linux HPC cluster

100%

Pera D.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2018

tom Vol. 22. No 2

113--123

In this paper after a short theoretical introduction about modern techniques used inparallel computing, we report a case study related to the design and development of the Caliban Linux High Performance Computing cluster, carried out by the author in the High Performance Computing Laboratory of the University of L’Aquila. Finally we report some performance evaluation tests related to the Caliban cluster performed using HPL (High-Performance Linpack) benchmarks.

GPU software and architecture comparison for numerical simulation of partial deferential equations

63%

May J. B. , Pera D.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2018

tom Vol. 22. No 1

85--100

This paper will show a comparison between the Kepler, Maxwell and Pascal GPU architectures using CUDA-Fortran, with and without dynamic calls, to efficiently solve partial differential equations. The target is to show the possibility of using affordable hardware, such astheGTX670,GTX970 andGTX1080 NVIDIA GPUs, which are commonly found in personal and portable computers, for scientific applications. For simplicity we consider a standard wave equation where we use a second order finite difference method for the spatial and time discretizations to obtain the numerical solution. We found that, as we increase the spatialre solution of the domain we also increase the performance difference between the GPU and the Central Processing Unit (CPU).