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Jose I. Aliaga, Maribel Castillo, Sergio Iserte, Iker Martín-Álvarez and Rafael Mayo
Maintaining a high rate of productivity, in terms of completed jobs per unit of time, in High-Performance Computing (HPC) facilities is a cornerstone in the next generation of exascale supercomputers. Process malleability is presented as a straightforwar...
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David Goz, Georgios Ieronymakis, Vassilis Papaefstathiou, Nikolaos Dimou, Sara Bertocco, Francesco Simula, Antonio Ragagnin, Luca Tornatore, Igor Coretti and Giuliano Taffoni
New challenges in Astronomy and Astrophysics (AA) are urging the need for many exceptionally computationally intensive simulations. ?Exascale? (and beyond) computational facilities are mandatory to address the size of theoretical problems and data coming...
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Franck Cappello,Al Geist,William Gropp,Sanjay Kale,Bill Kramer,Marc Snir
Pág. 5 - 28
Resilience is a major roadblock for HPC executions on future exascale systems. These systems will typically gather millions of CPU cores running up to a billion threads. Projections from current large systems and technology evolution predict errors will ...
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Maciej Brodowicz,Thomas Sterling,Matthew Anderson
Pág. 5 - 24
The end of Moore's Law is a cliche that none the less is a hard barrier to future scaling of high performance computing systems. A factor of about 4x in device density is all that is left of this form of improved throughput with a 5x gain required just t...
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Dmitry A. Nikitenko,Sergey A. Zhumatiy,Pavel A. Shvets
Pág. 72 - 79
The effective mastering of extremely parallel HPC system is impossible without deep understanding of all internal processes and behavior of the whole diversity of the components: computing processors and nodes, memory usage, interconnect, storage, whole ...
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Hank Childs
Pág. 5 - 13
In situ processing - i.e., coupling visualization routines to a simulation code to generate images in real-time - is predicted to be the dominant form for visualization on upcoming supercomputers. Unfortunately, traditional in situ techniques are largely...
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Kevin A. Huck,Allan Porterfield,Nick Chaimov,Hartmut Kaiser,Allen D. Malony,Thomas Sterling,Rob Fowler
Pág. 49 - 66
Exascale systems will require new approaches to performance observation, analysis, and runtime decision-making to optimize for performance and efficiency. The standard "first-person" model, in which multiple operating system processes and threads o...
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Kenneth Moreland,Matthew Larsen,Hank Childs
Pág. 67 - 75
Researchers face a daunting task to provide scientific visualization capabilities for exascale computing. Of the many fundamental changes we are seeing in HPC systems, one of the most profound is a reliance on new processor types optimized...
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Georges Da Costa,Thomas Fahringer,Juan Antonio Rico Gallego,Ivan Grasso,Atanas Hristov,Helen D. Karatza,Alexey Lastovetsky,Fabrizio Marozzo,Dana Petcu,Georgios L. Stavrinides,Domenico Talia,Paolo Trunfio,Hrachya Astsatryan
Pág. 6 - 27
Extreme scale parallel computing systems will have tens of thousands of optionally accelerator-equiped nodes with hundreds of cores each, as well as deep memory hierarchies and complex interconnect topologies. Such Exascale systems will provide hardware ...
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Thomas Sterling,Daniel Kogler,Matthew Anderson,Maciej Brodowicz
Pág. 42 - 57
A performance framework is introduced to facilitate the development and optimization of extreme-scale abstract execution models and the future systems derived from them. SLOWER defines a six-dimensional design trade-off space based on sources of performa...
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Seung Woo Son,Zhengzhang Chen,William Hendrix,Ankit Agrawal,Wei-keng Liao,Alok Choudhary
Pág. 76 - 88
While periodic checkpointing has been an important mechanism for tolerating faults in high-performance computing (HPC) systems, it is cost-prohibitive as the HPC system approaches exascale. Applying compression techniques is one common way to mitigate su...
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Julian Martin Kunkel,Michael Kuhn,Thomas Ludwig
Pág. 116 - 134
The computational power and storage capability of supercomputers are growing at a different pace, with storage lagging behind; the widening gap necessitates new approaches to keep the investment and running costs for storage systems at bay. In this paper...
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Earle Jennings
Pág. 38 - 53
The STAR protocol is introduced, which solves three problems with MPI, a well known secur- ity problem, and three exascale communication problems. Optical implementations are developed compatible with 100 Gbit/sec Ethernet. Automatic fault resilience mec...
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Saad A. Alowayyed,Maxime Vassaux,Ben Czaja,Peter V. Coveney,Alfons G. Hoekstra
Pág. 20 - 43
New applications that can exploit emerging exascale computing resources efficiently, while providing meaningful scientific results, are eagerly anticipated. Multi-scale models, especially multi-scale applications, will assuredly run at the exascale. We h...
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Dylan Chapp,Kento Sato,Dong H Ahn,Michela Taufer
Pág. 11 - 30
Record-and-replay techniques provide the ability to record executions of nondeterministic applications and re-execute them identically. These techniques find use in the contexts of debugging, reproducibility, and fault-tolerance, especiall...
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William Tang,Bei Wang,Stephane Ethier,Zhihong Lin
Pág. 83 - 97
As HPC R&D moves forward on a variety of ?path to exascale? architectures today, an associated objective is to demonstrate performance portability of discovery-science-capable software. Important application domains, such as Magnetic Fusion Energy ...
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Saeed Musaad Altalhi, Fathy Elbouraey Eassa, Abdullah Saad Al-Malaise Al-Ghamdi, Sanaa Abdullah Sharaf, Ahmed Mohammed Alghamdi, Khalid Ali Almarhabi and Maher Ali Khemakhem
As the development of high-performance computing (HPC) is growing, exascale computing is on the horizon. Therefore, it is imperative to develop parallel systems, such as graphics processing units (GPUs) and programming models, that can effectively utilis...
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Vadim V. Elisseev,Milos Puzovic,Eun Kyung Lee
Pág. 24 - 41
On the path to Exascale, the goal of High Performance Computing (HPC) to achieve maximum performance becomes the goal of achieving maximum performance under strict power constraint. Novel approaches to hardware and software co-design of modern HPC system...
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Michael Knobloch,Bernd Mohr
Pág. 91 - 111
General purpose GPUs are now ubiquitous in high-end supercomputing. All but one (the Japanese Fugaku system, which is based on ARM processors) of the announced (pre-)exascale systems contain vast amounts of GPUs that deliver the majority of the performan...
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Jakob Lüttgau,Michael Kuhn,Kira Duwe,Yevhen Alforov,Eugen Betke,Julian Kunkel,Thomas Ludwig
Pág. 31 - 58
In current supercomputers, storage is typically provided by parallel distributed file systems for hot data and tape archives for cold data. These file systems are often compatible with local file systems due to their use of the POSIX interface and semant...
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