Most HPC systems are clusters of shared memory nodes. Parallel programming must combine the distributed memory paralleliza-tion on the node inter-connect with the shared memory parallelization inside of each node. Thi...
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This book presents the state of the art in high-performancecomputing and simulation on modern supercomputer architectures. It covers trends in hardware and software development in general and specifically the future ...
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ISBN:
(数字)9783319014395
ISBN:
(纸本)9783319014388;9783319344362
This book presents the state of the art in high-performancecomputing and simulation on modern supercomputer architectures. It covers trends in hardware and software development in general and specifically the future of high-performance systems and heterogeneous architectures. The application contributions cover computational fluiddynamics, material science, medical applications and climate research. Innovative fields like coupled multi-physics or multi-scale simulations are presented. All papers were chosen from presentations given at the 16th Workshop on Sustained Simulation performance held in december 2012 at HLrS, University of Stuttgart, Germany and the 17th Workshop on Sustained Simulation performance at Tohoku University in March 2013.
We present the full decomposition of the momentum fraction carried by quarks and gluons in the pion and the kaon. We employ three gauge ensembles generated with Nf=2+1+1 Wilson twisted-mass clover-improved fermions at...
We present the full decomposition of the momentum fraction carried by quarks and gluons in the pion and the kaon. We employ three gauge ensembles generated with Nf=2+1+1 Wilson twisted-mass clover-improved fermions at the physical quark masses. For both mesons we perform a continuum extrapolation directly at the physical pion mass, which allows us to determine for the first time the momentum decomposition at the physical point. We find that the total momentum fraction carried by quarks is 0.575(79) and 0.683(50) and by gluons 0.402(53) and 0.422(67) in the pion and in the kaon, respectively, in the MS¯ scheme and at the renormalization scale of 2 GeV. Having computed both the quark and gluon contributions in the continuum limit, we find that the momentum sum is 0.984(89) for the pion and 1.13(11) for the kaon, verifying the momentum sum rule.
The scalable preparation of multi-functional three-dimensional （3d） carbon nanotubes and graphene （CNTs-G） hybrids via a well-controlledroute is urgently required and challenging. Herein, an easily operated, oxal...
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The scalable preparation of multi-functional three-dimensional （3d） carbon nanotubes and graphene （CNTs-G） hybrids via a well-controlledroute is urgently required and challenging. Herein, an easily operated, oxalic acid-assisted method was developed for the in situ fabrication of a 3d lasagna-like Fe-N-doped CNTs-G framework （LMFC） from a precursordesigned at the molecular level. The well-organized architecture of LMFC was constructed by multi-dimensionally interconnected graphene and CNTs which derived from porous graphene sheets, to form a fundamentally robust and hierarchical porous structure, as well as favorable conductive networks. The impressive oxygen reduction reaction （Orr） performances in both alkaline and acidic conditions helped confirm the significance of this technically favorable morphological structure. This product was also the subject of research for the exploration of decisive effects on the performance of Orr catalysts with reasonable control variables. The present work further advances the construction of novel 3d carbon architectures via practical and economic routes.
Hydrothermal carbonization (HTC) of biomass to produce one-dimensional carbon materials with hierarchical pores is of significant importance. Here, we fabricate composites of MnOx-encapsulated multiporous carbon nanof...
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different types of shared memory machines with large core counts exist today. Standard x86-based servers are build with up to eight sockets per machine. To obtain larger machines, some companies, like SGI or Bull, inv...
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The book presents the state of the art in highperformancecomputing and simulation on modern supercomputer architectures. It covers trends in hardware and software development in general and specifically the future o...
详细信息
ISBN:
(数字)9783642324543
ISBN:
(纸本)9783642324536;9783662510957
The book presents the state of the art in highperformancecomputing and simulation on modern supercomputer architectures. It covers trends in hardware and software development in general and specifically the future of highperformance systems and heterogeneous architectures. The application contributions cover computational fluiddynamics, material science, medical applications and climate research. Innovative fields like coupled multi-physics or multi-scale simulations are presented. All papers were chosen from presentations given at the 14th Teraflop Workshop held in december 2011 at HLrS, University of Stuttgart, Germany and the Workshop on Sustained Simulation performance at Tohoku University in March 2012.
Focusing on the nonlinear hysteresis behavior of Entangled Metal Pseudo rubber (EMPr) under quasi-static compression, this study investigates the impact of self-contact friction on its energy dissipation and path memo...
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