Institutional Repository of Computer Application Research Laboratory
| 基于零拷贝的脉冲星GPU相干消色散算法 | |
| Alternative Title | Coherent De-dispersion Algorithm for Pulsar GPU Based on Zero-copy |
王博群1,2 ; 张海龙1,2,3,4; 王杰1,2,4; 冶鑫晨1,4; 王万琼1; 李嘉1; 张萌1,2; 张亚州1,2
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| 2021-07-01 | |
| Source Publication | 天文研究与技术
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| ISSN | 1672-7673 |
| Volume | 18Issue:3Pages:372-379 |
| Contribution Rank | 1 |
| Abstract | 射电脉冲信号在传输过程中受到星际介质的影响会导致轮廓展宽和变形，在研究过程中需要对信号进行消色散处理。本文设计并实现了基于零拷贝的脉冲星数据GPU相干消色散算法，采用设备内存映射以消除主机到设备的拷贝开销，利用CUDA的cuFFT库进行多BATCH傅里叶变换以提高DFT效率，同时采用多线程实现了传递函数的加速计算。实验结果表明，与传统CPU及GPU算法相比，本文提出的算法在大数据量时表现良好。 |
| Other Abstract | In order to meet the requirements of real-time de-dispersion processing of pulsar signals, a GPU based incoherent de-dispersion algorithm is implemented. We use high-performance parallel computing methods to conduct in-depth research on the incoherent de-dispersion algorithm for multi-thread processing, and propose a parallel acceleration scheme for the algorithm, which solves the problem that the de-dispersion algorithm has a large amount of calculation and cannot be processed in real time. We analyze the intensive computing parts of the algorithm, efficiently use the hierarchical storage structure of the GPU, improve the utilization rate of GPU computing resources, thereby reducing the calculation time, and significantly improving the calculation performance of the incoherent de-dispersion algorithm. |
| Keyword | 零拷贝 相干消色散 GPU CUDA cuFFT |
| DOI | 10.14005/j.cnki.issn1672-7673.20210107.001 |
| Indexed By | CSCD |
| Language | 中文 |
| WOS ID | CSCD:7008058 |
| CSCD ID | CSCD:7008058 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4687 |
| Collection | 计算机技术应用研究室 |
| Corresponding Author | 张海龙 |
| Affiliation | 1.中国科学院新疆天文台,新疆乌鲁木齐830011; 2.中国科学院大学,北京100049; 3.中国科学院射电天文重点实验室,江苏南京210008; 4.国家天文科学数据中心,北京100101 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 王博群,张海龙,王杰,等. 基于零拷贝的脉冲星GPU相干消色散算法[J]. 天文研究与技术,2021,18(3):372-379. |
| APA | 王博群.,张海龙.,王杰.,冶鑫晨.,王万琼.,...&张亚州.(2021).基于零拷贝的脉冲星GPU相干消色散算法.天文研究与技术,18(3),372-379. |
| MLA | 王博群,et al."基于零拷贝的脉冲星GPU相干消色散算法".天文研究与技术 18.3(2021):372-379. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 王博群-2021-基于零拷贝的脉冲星GP（1543KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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