Tài liệu High Performance Computing on Vector Systems-P1 pdf

... automatically indicates the location of the fault and an au-tomatic reconfiguration function releases the faulty component and continuessystem operation. In addition to the functions above, prompt fault ... Promotion Division,1-10, Nisshin-cho, Fuchu, Tokyo, Japan,4NEC High Performance Computing Europe GmbH,Prinzenallee 11, D-40549 Düsseldorf, GermanyAbstract In 2003, the High Performance Computing ... significant vector performance forshort vector lengths. The crossover between scalar and vector performance isa short 14 elements in most cases.The vector unit is constructed using NEC vector pipeline...

Tài liệu High Performance Computing on Vector Systems-P2 pptx

... thread synchronisation),yielding low performance on small domains and saturation at high performance on large domains. For the pipeline-parallel (SGI Altix) 3-D implementationa maximum performance ... originally developed for high- performance vector com-puters such as CRAY, NEC or Fujitsu, it achieves high vectorization ratios(> 99.8%). In the context of vectorization, three diﬀerent types ... and peak performance for full-scale scientiﬁc applications on suchplatforms has become major concern in high performance computing. The latest gener-ation of custom-built parallel vector systems...

Tài liệu High Performance Computing on Vector Systems-P3 ppt

... equilibrium condition, the conventional Fermi-Golden rule dealingthe electron-phonon coupling thus does not work. Under such a non-equilibriumcondition, the real-time propagation must be treated ... 120-billion-dimensional Hamiltonianmatrix on 512 nodes. To our knowledge, this size is the largest in the history ofthe exact diagonalization method of Hamiltonian matrices.6 ConclusionsThe best performance, ... picoseconds. The earlier decay is interpretedas electron-electron coupling while the slower one is interpreted as electron-phonon coupling. These measurements were, however, done with samples con-taining...

Tài liệu High Performance Computing on Vector Systems-P4 pdf

... good portion of the theoretical peak performance on the vector machine. Block operations are not only eﬃcient on vector systems, but also on scalar architectures [9]. The results of matrix vector multiplication ... machines because they lead to long vector lengths. Block computationsare necessary to achieve a good portion of peak performance not only on vector machines, but also on most of the superscalar ... than conventional scalar processors. Vectorization exploitsregularities in the computational structure to accelerate uniform operations on independent data sets. Vector arithmetic instructions...

Tài liệu High Performance Computing on Vector Systems-P5 doc

... contains many integer operations and non-vectorized if-branches,whereas the flow solution procedure has a simple code structure, is well vector- ized and contains only floating point operations.The ... separate OFA has only a minoreffect on the NOx-emission.In order to work on this combustion optimization problem in virtual reality,a high- resolution boiler model with 1 million grid points was ... Helicopter 1358 Performance on NEC SX-8 Vector ComputerIn spring 2005 the next generation vector computer NEC SX-8 was installed asthe successor of the NEC SX-6 at the High Performance Computing...

Tài liệu High Performance Computing on Vector Systems-P6 pdf

... SX6+the performance increases subproportionally beyond 6 CPUs. For the Γ -pointonly version, the scaling degrades beyond 4 CPUs, but this version is still fasterthan the full version. If only ... isvalid in non-uniform mean ﬂow and takes into account convection and refractioneﬀects, unlike the linearized Euler equations [14].Please purchase PDF Split-Merge on www.verypdf.com to remove ... optimizations throughrelaxation simulations are possible. In all cases, k-space was sampled at theΓ -point only. Two VASP versions were used: a full complex version and a spe-cialized Γ -point only...

Tài liệu High Performance Computing on Vector Systems-P7 pdf

... region. Only the molecule positions ofthe “halo” molecules have to be communicated, which is done in 3 consecutivesteps: ﬁrst x, then y and ﬁnal the z direction. The diagonal directions are doneimplicitly ... This model was on the way to an explosion, although probablya weak one, in contrast to simulations of the same star with a constrainedPlease purchase PDF Split-Merge on www.verypdf.com to remove ... non-linear systemof algebraic equations, which is solved by Newton-Raphson iteration with explicitconstruction and inversion of the corresponding Jacobian matrix.Inversion of the JacobiansThe Jacobians...

Tài liệu High Performance Computing on Vector Systems-P8 pptx

... DiscretizationAs we use a conservative formulation, convective terms are discretized as oneterm to better restrain conservation equations. Viscous terms are expanded be-cause computing the second ... the conservative variables Q.2.5 Boundary ConditionsThe modular concept for boundary conditions allows the application of the codeto a variety of compressible ﬂows. Each boundary condition can ... (2)The continuity equation, the three momentum equations and the energy equationcan be written in vector notation∂Q∂t+∂F∂x+∂G∂y+∂H∂z=0 (3)Please purchase PDF Split-Merge on www.verypdf.com...

Tài liệu High Performance Computing on Vector Systems-P9 pdf

... simulations will be extended in the future to gain moredetails on the mechanisms of sound generation with the intention to controljet-induced noise.Please purchase PDF Split-Merge on www.verypdf.com ... eigenfunctions from linear stability theory(see Sect. 4.3) in accordance with the characteristic boundary condition. One-dimensional characteristic boundary conditions posses low reflection coefficientsfor ... 277–3057. Giles M. B.: Non-reflecting boundary conditions for Euler equation calcula-tions. AIAA-Journal 28, no. 12 (1990), 2050–20588. Kloker, M. J.: A robust high- resolution split type compact...

Tài liệu High Performance MySQL pdf

... don’t require, attribution. An attribution usually includes thetitle, author, publisher, and ISBN. For example: High Performance MySQL: Optimi-zation, Backups, Replication, and More, Second ... are somehighlights from the roadmap:• The option of either transactional or nontransactional storage, on a per-tablebasis• Crash recovery, even when a table is running in nontransactional mode• ... transaction starts. You can set the isola-tion level for the whole server in the configuration file (see Chapter 6), or just foryour session:mysql> SET SESSION TRANSACTION ISOLATION LEVEL...

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