Practical Performance Analysis of CPU, GPU and Xeon-Phi in Atmospheric Correction Processing for the Geostationary Ocean Color Imager (GOCI)
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 허재무 | - |
dc.contributor.author | 한희정 | - |
dc.contributor.author | 양현 | - |
dc.contributor.author | 박영제 | - |
dc.date.accessioned | 2020-07-15T15:32:58Z | - |
dc.date.available | 2020-07-15T15:32:58Z | - |
dc.date.created | 2020-02-11 | - |
dc.date.issued | 2017-05-18 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/23967 | - |
dc.description.abstract | In 2019, Geostationary Ocean Color Imager-II (GOCI-II) will be launched as a successor to GOCI, the worlds first geostationary ocean color sensor. The existing atmospheric correction algorithm for GOCI was designed to be processed sequentially. Also, if GOCI-II data is processed sequentially it takes more than 1 hour although GOCI-II data must be processed within 11 minutes. To meet these requirements, the parallelism was applied to the existing GOCI data processing prior to developing GOCI-II. In this paper, we have improved the processing speed of atmospheric correction algorithm using OpenMP(Open Multi-Processing) and OpenCL(Open Computing Language). The newest CPUs, Xeon-Phi and GPUs were used in experiments, and the performances of CPU- and GPU-parallelized versions were derived by comparisons with the existing sequential version. As a result, GPU version showed the performance improvements 40 times better than a sequential version and nearly twice as high as a CPU version, and its memory capacity were maintained within 3GB.ially. Also, if GOCI-II data is processed sequentially it takes more than 1 hour although GOCI-II data must be processed within 11 minutes. To meet these requirements, the parallelism was applied to the existing GOCI data processing prior to developing GOCI-II. In this paper, we have improved the processing speed of atmospheric correction algorithm using OpenMP(Open Multi-Processing) and OpenCL(Open Computing Language). The newest CPUs, Xeon-Phi and GPUs were used in experiments, and the performances of CPU- and GPU-parallelized versions were derived by comparisons with the existing sequential version. As a result, GPU version showed the performance improvements 40 times better than a sequential version and nearly twice as high as a CPU version, and its memory capacity were maintained within 3GB. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | Remote Sensing Society of Japan | - |
dc.relation.isPartOf | International Symposium on Remote Sensing 2017 | - |
dc.title | Practical Performance Analysis of CPU, GPU and Xeon-Phi in Atmospheric Correction Processing for the Geostationary Ocean Color Imager (GOCI) | - |
dc.type | Conference | - |
dc.citation.conferencePlace | JA | - |
dc.citation.endPage | 688 | - |
dc.citation.startPage | 685 | - |
dc.citation.title | International Symposium on Remote Sensing 2017 | - |
dc.contributor.alternativeName | 허재무 | - |
dc.contributor.alternativeName | 한희정 | - |
dc.contributor.alternativeName | 양현 | - |
dc.contributor.alternativeName | 박영제 | - |
dc.identifier.bibliographicCitation | International Symposium on Remote Sensing 2017, pp.685 - 688 | - |
dc.description.journalClass | 1 | - |