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Analysis of efficiency of applying MKL and OpenMP polynuclear parallel algorithms to recovery of high degree Earth's gravity field

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Authors:Chen Qiujie; Shen Yunzhong; Zhang Xingfu
Author Affiliations:Primary:
Tongji University, Department of Surveying and Geoinformatics, Shanghai, China
Other:
Guangdong University of Technology, China
Volume Title:Dadi Celiang yu Diqiu Dongli Xue Journal of Geodesy and Geodynamics
Source:Dadi Celiang yu Diqiu Dongli Xue = Journal of Geodesy and Geodynamics, 32(5), p.118-123. Publisher: Gai Kan Bianjibu, Wuhan, China. ISSN: 1671-5942
Publication Date:2012
Note:In Chinese with English summary. 6 refs.; illus., incl. 5 tables
Summary:The ordinary matrix operation algorithms are difficult to meet the needs of high degree gravity field recovery. In order to improve computational efficiency, this article applied OpenMP parallel computing libraries and MKL scientific computing libraries to high degree earth's gravity field recovery, which significantly improved the computational efficiency. Simulation results are as follows. 1)When making up of sub normal equation coefficient matrix with a single epoch as the solver unit, OpenMP algorithm can store normal equation coefficient matrix under the compressed triangle and OpenMP algorithm's overhead of memory and time are relatively acceptable. 2) When the author makes up of the high dimension's coefficient matrix with more than one epoch, and then forms the normal equation, MKL algorithm can make an efficient performance. 3) The efficiency of MKL inversion algorithm is much higher than OpenMP algorithm. 4) Utilization of the advantages of OpenMP and MKL algorithms can significantly improve the efficiency of high degree earth's gravity field recovery.
Subjects:Algorithms; Data processing; Earth; Geodesy; Gravity field; Numerical analysis; Parallel processing
Record ID:783814-25
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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040 |a ViAlAGI  |c ViAlAGI 
041 |a chi  |b eng 
072 7 |a 20  |2 georeft 
100 1 |a Chen Qiujie  |e analytic author  |u Tongji University, Department of Surveying and Geoinformatics, Shanghai 
245 1 0 |a Analysis of efficiency of applying MKL and OpenMP polynuclear parallel algorithms to recovery of high degree Earth's gravity field 
300 |a p. 118-123 
500 |a In Chinese with English summary. 6 refs. 
500 |a Affiliation: Tongji University, Department of Surveying and Geoinformatics; Shanghai; CHN; China 
500 |a Affiliation: Guangdong University of Technology; ; CHN; China 
500 |a Key title: Dadi Celiang yu Diqiu Dongli Xue = Journal of Geodesy and Geodynamics 
500 |a Source note: Dadi Celiang yu Diqiu Dongli Xue = Journal of Geodesy and Geodynamics, 32(5), p.118-123. Publisher: Gai Kan Bianjibu, Wuhan, China. ISSN: 1671-5942 
500 |a Publication type: journal article 
504 |b 6 refs. 
510 3 |a GeoRef, Copyright 2021 American Geosciences Institute. 
520 |a The ordinary matrix operation algorithms are difficult to meet the needs of high degree gravity field recovery. In order to improve computational efficiency, this article applied OpenMP parallel computing libraries and MKL scientific computing libraries to high degree earth's gravity field recovery, which significantly improved the computational efficiency. Simulation results are as follows. 1)When making up of sub normal equation coefficient matrix with a single epoch as the solver unit, OpenMP algorithm can store normal equation coefficient matrix under the compressed triangle and OpenMP algorithm's overhead of memory and time are relatively acceptable. 2) When the author makes up of the high dimension's coefficient matrix with more than one epoch, and then forms the normal equation, MKL algorithm can make an efficient performance. 3) The efficiency of MKL inversion algorithm is much higher than OpenMP algorithm. 4) Utilization of the advantages of OpenMP and MKL algorithms can significantly improve the efficiency of high degree earth's gravity field recovery. 
650 7 |a Algorithms  |2 georeft 
650 7 |a Data processing  |2 georeft 
650 7 |a Earth  |2 georeft 
650 7 |a Geodesy  |2 georeft 
650 7 |a Gravity field  |2 georeft 
650 7 |a Numerical analysis  |2 georeft 
650 7 |a Parallel processing  |2 georeft 
700 1 |a Shen Yunzhong,  |e analytic author 
700 1 |a Zhang Xingfu,  |e analytic author 
773 0 |t Dadi Celiang yu Diqiu Dongli Xue Journal of Geodesy and Geodynamics  |d Wuhan : Gai Kan Bianjibu, Nov. , 29 2012  |x 1671-5942  |n Dadi Celiang yu Diqiu Dongli Xue = Journal of Geodesy and Geodynamics, 32(5), p.118-123. Publisher: Gai Kan Bianjibu, Wuhan, China. ISSN: 1671-5942 Publication type: journal article  |g Vol. 32, no. 5  |h illus., incl. 5 tables