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No full textPoznańThe Columbia project at NASA Ames includes twenty 512 processor Altix systems. Four of those systems are joined together into a Numalink based globally accessible non-coherent memory Altix SuperCluster. PBSPro 7.0 and 7.1 have been used to schedule and run work on this system. In this presentation, we will go over features of PBSPro especially applicable to such systems, some problems we have encountered and how they have been addressed, and remaining, unresolved issues
No full textPoznańIn this article, we explore a natural duality that exist between MPI communication routines in parallel programs, and show the ease of its adjoint implementation via pointers
No full textPoznańDesigning parallel applications and parallelizing sequential applications for cluster systems require powerful development tools to achieve scalable, reliable and highly efficient applications. The Intel Cluster Toolkit offers a toolset for development of MPI based applications and enables the developer to build, analyze, and optimize the parallel application. This article will describe the basic functionality and use of these tools
No full textPoznańThe present work is devoted to the calculation of the radiation displacement defects (RDD) concentration in complex oxide crystals (Y3A15O12, Gd3Ga5O12, YA1O3, LiNbO3) as a function of particle energy (electrons and neutrons). Energy dependencies of RDD concentration are discussed. The results of calculations show that the concentrations of RDD reduced to one impinging particle increased initially with the particles energy and they saturates for the electron and neutron energy above 25 MeV. The comparison of the concentrations of RDD calculated for different sub-lattices as well as for the cases of electrons and neutrons is made. The obtained results are compared with the experimental data
