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Wyszukujesz frazę "computing systems" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
An introduction to high performance computing: technology, tools and applications
Autorzy:
Kowalik, J. S.
Powiązania:
https://bibliotekanauki.pl/articles/1953946.pdf
Data publikacji:
2000
Wydawca:
Politechnika Gdańska
Tematy:
supercomputers
client-server systems
enterprise data processing systems
performance
parallel computing
cluster computing
Opis:
Traditionally high performance was applied to very computationally demanding problems in science and engineering. They were known as the Grand Challenge Problems that required supercomputers equipped with very large computer memories and capable of high rates of computation measured by Megaflops (million floating point operations per second). In the last two decades the world of business and industry has recognized the enormous potential of large distributed computer systems for their business enterprise applications. Today most of the existing high performance computers are employed in the enterprise environments. A typical system has three layers of servers: user interface, applications and database. These client/server architectures are the work horse of large enterprise information processing. This introductory paper describes both areas of high performance computing applications that differ in the nature of workload, performance objectives, design methodology and scientific focus.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2000, 4, 2; 171-178
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parallel computing in a network of workstations
Autorzy:
Ogrodowczyk, R.
Murawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1954092.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska
Tematy:
parallel computing
clusters
parallel-processing systems
Opis:
In this paper we describe a few architectures and software for parallel-processing computers. We have tested a cluster constructed with the use of MPI. All tests have been performed for one- and two-dimensional magneto-hydrodynamic plasma. We have concluded from the results of these tests that a simple problem should be run in a sequential node, as its execution time does not essentially decrease with the number of processors used. At the same time, the execution time of a complex problem decreases significantly with the number of processors. In the case of two-dimensional plasma the acceleration factor has reached the value of 3.7 with the use of 10 processors.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 3; 327-332
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A parallel algorithm of icsym forcomplexsymmetric linear systems in quantum chemistry
Autorzy:
Zhang, Y.
Lv, Q.
Xiao, M.
Xie, G.
Breitkopf, P.
Powiązania:
https://bibliotekanauki.pl/articles/305677.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
complex symmetric linear systems
parallel computing
improved conjugate gradient-type iterative algorithm (ICSYM)
Opis:
Computational effort is a common issue for solving large-scale complex symmetric linear systems, particularly in quantum chemistry applications. In order to alleviate this problem, we propose a parallel algorithm of improved conjugate gradient-type iterative (ICSYM). Using three-term recurrence relation and or- thogonal properties of residual vectors to replace the tridiagonalization process of classical CSYM, which allows to decrease the degree of the reduce-operator from two to one communication at each iteration and to reduce the amount of vector updates and vector multiplications. Several numerical examples are implemented to show that high performance of proposed improved version is obtained both in convergent rate and in parallel efficiency.
Źródło:
Computer Science; 2018, 19 (4); 385-401
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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