The Implementation of Real-Time Storage for Parallel Plasma Equilibrium Reconstruction Data in EAST PCS
文献类型：期刊论文
| 作者 | Zhu, J. Q.1,2; Shen, B.1; Yuan, Qiping1 ; Zhang, R. R.1; Huang, Y.1; Guo, H. R.1,2; Yan, L. L.1,2; Zheng, Y. Y.1,2
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| 刊名 | IEEE TRANSACTIONS ON PLASMA SCIENCE
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| 出版日期 | 2020-06-01 |
| 卷号 | 48 |
| 关键词 | Real-time systems Discharges (electric) Graphics processing units Memory management Message systems Tokamak devices Long-pulse operation parallel equilibrium reconstruction P-EFIT real-time storage shared memory |
| ISSN号 | 0093-3813 |
| DOI | 10.1109/TPS.2019.2951065 |
| 通讯作者 | Yuan, Qiping(qpyuan@ipp.ac.cn) |
| 英文摘要 | In order to obtain the accurate and fast equilibrium reconstruction for Experimental Advanced Superconducting Tokamak ( EAST), parallel plasma equilibrium reconstruction (P-EFIT) based on parallel computation in the graphic processing unit (GPU) and the EFIT framework is developed. However, more data will be produced during shots with improved accuracy and rapidity. 76 KB of P-EFIT data are generated in each iteration of 500 mu s with computation grid size of 129 x 129. EAST is aimed at 1000-s-long-pulse discharge, then 52 GB of P-EFIT data will be generated during a shot even at 1.5 ms saving interval. In the previous storage mode, these data will be saved in memory during shots and archived to MDSplus as a whole after the shot, which means a very large memory requirement and heavy network transmission load after shots. Therefore, the real-time storage is designed for P-EFIT data to replace the "after shot archiving" mode. In the new mode, the P-EFIT processes and real-time archiving process will coordinate and share P-EFIT data gathered from GPU via shared memory, then the P-EFIT data will be archived to MDSplus in real-time during shots based on "segmented record" of MDSplus, which provides the possibility to reuse the memory allocated for P-EFIT and save data in higher saving frequency. The real-time storage of P-EFIT data was tested in 10-s discharge and 1000-s-long-pulse simulation discharge, and the validity and the advantage of memory saving have been verified. The real-time storage has been integrated into a plasma control system (PCS) and will be applied to next experiments in EAST. In order to obtain the accurate and fast equilibrium reconstruction for Experimental Advanced Superconducting Tokamak (EAST), parallel plasma equilibrium reconstruction (P-EFIT) based on parallel computation in the graphic processing unit (GPU) and the EFIT framework is developed. However, more data will be produced during shots with improved accuracy and rapidity. 76 KB of P-EFIT data are generated in each iteration of 500 mu s with computation grid size of 129x129. EAST is aimed at 1000-s-long-pulse discharge, then 52 GB of P-EFIT data will be generated during a shot even at 1.5 ms saving interval. In the previous storage mode, these data will be saved in memory during shots and archived to MDSplus as a whole after the shot, which means a very large memory requirement and heavy network transmission load after shots. Therefore, the real-time storage is designed for P-EFIT data to replace the "after shot archiving" mode. In the new mode, the P-EFIT processes and real-time archiving process will coordinate and share P-EFIT data gathered from GPU via shared memory, then the P-EFIT data will be archived to MDSplus in real-time during shots based on "segmented record" of MDSplus, which provides the possibility to reuse the memory allocated for P-EFIT and save data in higher saving frequency. The real-time storage of P-EFIT data was tested in 10-s discharge and 1000-s-long-pulse simulation discharge, and the validity and the advantage of memory saving have been verified. The real-time storage has been integrated into a plasma control system (PCS) and will be applied to next experiments in EAST. |
| 资助项目 | National MCF Energy Research and Development Program of China[2018YFE0302100] ; National Natural Science Foundation of China[Y95JQ97504] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000542945800070 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| 资助机构 | National MCF Energy Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/92843]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yuan, Qiping |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, J. Q.,Shen, B.,Yuan, Qiping,et al. The Implementation of Real-Time Storage for Parallel Plasma Equilibrium Reconstruction Data in EAST PCS[J]. IEEE TRANSACTIONS ON PLASMA SCIENCE,2020,48. |
| APA | Zhu, J. Q..,Shen, B..,Yuan, Qiping.,Zhang, R. R..,Huang, Y..,...&Zheng, Y. Y..(2020).The Implementation of Real-Time Storage for Parallel Plasma Equilibrium Reconstruction Data in EAST PCS.IEEE TRANSACTIONS ON PLASMA SCIENCE,48. |
| MLA | Zhu, J. Q.,et al."The Implementation of Real-Time Storage for Parallel Plasma Equilibrium Reconstruction Data in EAST PCS".IEEE TRANSACTIONS ON PLASMA SCIENCE 48(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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