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Wyświetlanie 1-4 z 4
Tytuł:
Studying OpenMP thread mapping for parallel linear algebra kernels on multicore system
Autorzy:
Bylina, B.
Bylina, J.
Powiązania:
https://bibliotekanauki.pl/articles/200778.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computation performance
OpenMP standard
nonnegative matrix factorization
thread mapping
energy consumption
wydajność obliczeniowa
Standard OpenMP
nieujemna faktoryzacja macierzy
mapowanie
zużycie energii
Opis:
Thread mapping is one of the techniques which allow for efficient exploiting of the potential of modern multicore architectures. The aim of this paper is to study the impact of thread mapping on the computing performance, the scalability, and the energy consumption for parallel dense linear algebra kernels on hierarchical shared memory multicore systems. We consider the basic application, namely a matrix-matrix product (GEMM), and two parallel matrix decompositions (LU and WZ). Both factorizations exploit parallel BLAS (basic linear algebra subprograms) operations, among others GEMM. We compare differences between various thread mapping strategies for these applications. Our results show that the choice of thread mapping has the measurable impact on the performance, the scalability, and energy consumption of the GEMM and two matrix factorizations.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 6; 981-990
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The real-time simulation of an electric systems – the simulation stability
Autorzy:
Fajfer, M.
Powiązania:
https://bibliotekanauki.pl/articles/97232.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
simulator working in real-time
DSP processor
multicore system
concurrent computing simulation of electrical system
Opis:
The paper presents the results of a research of the impact of numerical integration algorithm and the method of solving the system of linear equations for the stability of the simulation of electric circuit in steady states and transient states. Stability criteria was explained. Mathematical modeling algorithm of the electric power line (steady states and transient states) was presented with elements of concurrent computing. The goal is to create a mathematical model of the electric circuit that will meet the requirements of the models used in simulators working in real time.
Źródło:
Computer Applications in Electrical Engineering; 2015, 13; 65-76
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The parallel tiled WZ factorization algorithm for multicore architectures
Autorzy:
Bylina, Beata
Bylina, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/331092.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
tiled algorithm
WZ factorization
solution of linear system
Amdahl’s law
high performance computing
multicore architecture
rozkład WZ
układ liniowy
prawo Amdahla
architektura wielordzeniowa
Opis:
The aim of this paper is to investigate dense linear algebra algorithms on shared memory multicore architectures. The design and implementation of a parallel tiled WZ factorization algorithm which can fully exploit such architectures are presented. Three parallel implementations of the algorithm are studied. The first one relies only on exploiting multithreaded BLAS (basic linear algebra subprograms) operations. The second implementation, except for BLAS operations, employs the OpenMP standard to use the loop-level parallelism. The third implementation, except for BLAS operations, employs the OpenMP task directive with the depend clause. We report the computational performance and the speedup of the parallel tiled WZ factorization algorithm on shared memory multicore architectures for dense square diagonally dominant matrices. Then we compare our parallel implementations with the respective LU factorization from a vendor implemented LAPACK library. We also analyze the numerical accuracy. Two of our implementations can be achieved with near maximal theoretical speedup implied by Amdahl’s law.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2019, 29, 2; 407-419
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tabular minimal redundant modular structures for fast and high-precision computations using general-purpose computers
Autorzy:
Selianinau, M.
Powiązania:
https://bibliotekanauki.pl/articles/122002.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
arytmetyka modularna
system modułowy
procesory wielordzeniowe
zastosowanie komputerów
cyfrowe przetwarzanie sygnału
modular arithmetic
modular system
multicore processors
computer applications
digital signal processing
Opis:
The present paper is a continuation of research in parallel information processing based on the tabular modular computing structures. We deal with the methodology of using a minimal redundant modular number system for high-speed and high-precision computation by means of modern universal multicore processors. Advantages of formal computing mode on the base of modular arithmetic are demonstrated by the example of implementation of digital signal processing procedures. The additive and additive multiplicative formal computing schemes with the obtained estimations of the cardinality of working ranges for the realization of calculations are presented in the article.
Źródło:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2017, 22; 129-139
2450-9302
Pojawia się w:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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