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Acta Optica Sinica, Volume. 44, Issue 18, 1801011(2024)

Research on Parallel Computing Methods for High-Resolution Atmospheric Spectral Lines

Zhiang Ma1,2, Dacheng Li2, Jun Wu2、*, and Chen Cheng2、**
Author Affiliations
  • 1Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui , China
  • 2Key Laboratory of General Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Anhui , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (18)
    Cited By (1)
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    Figures & Tables(12)
    Schematic diagram of spectral line shape

    Fig. 1. Schematic diagram of spectral line shape

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    Flowchart of parallel computing model for universal atmospheric spectral lines

    Fig. 2. Flowchart of parallel computing model for universal atmospheric spectral lines

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    Comparison of absorption cross-section calculation results in atmospheric environment. (a) Comparison of typical CO2 calculation examples; (b) absolute error

    Fig. 3. Comparison of absorption cross-section calculation results in atmospheric environment. (a) Comparison of typical CO2 calculation examples; (b) absolute error

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    Verification of non-uniform path radiance calculation results

    Fig. 4. Verification of non-uniform path radiance calculation results

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    Acceleration ratio of CUDA stream when starting multiple kernel functions in parallel

    Fig. 5. Acceleration ratio of CUDA stream when starting multiple kernel functions in parallel

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    Calculation flow chart of commonly used K distribution method. (a) Absorption coefficients before reordering; (b) reordering of absorption coefficients after reordering; (c) relationship curve of g-k

    Fig. 6. Calculation flow chart of commonly used K distribution method. (a) Absorption coefficients before reordering; (b) reordering of absorption coefficients after reordering; (c) relationship curve of g-k

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    Flow chart for constructing correlated K distribution coefficient table

    Fig. 7. Flow chart for constructing correlated K distribution coefficient table

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    Relationship curve of g-k

    Fig. 8. Relationship curve of g-k

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    Atmospheric transmittance calculated through the correlated K distribution coefficient library

    Fig. 9. Atmospheric transmittance calculated through the correlated K distribution coefficient library

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    • Table 1. Calculation efficiency of H2O for different block_size under normal temperature and pressure, wave number range of 1000-10000 cm－1, and resolution of 0.01 cm－1

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      Table 1. Calculation efficiency of H2O for different block_size under normal temperature and pressure, wave number range of 1000-10000 cm－1, and resolution of 0.01 cm－1

      Block_sizeTime /ms
      322388.1
      642268.9
      1282207.9
      2562309.1
      512Unable to start

    • Table 2. Calculation efficiency of H2O with different number of grid points under normal temperature and pressure, wave number range of 1000-10000 cm－1, and resolution of 0.01 cm－1

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      Table 2. Calculation efficiency of H2O with different number of grid points under normal temperature and pressure, wave number range of 1000-10000 cm－1, and resolution of 0.01 cm－1

      Grid pointTime /ms
      1350.5
      2234.7
      3201.6
      4159.3
      5164.3
      6196.6

    • Table 3. Acceleration ratio of parallel computing transmittance at different resolutions

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      Table 3. Acceleration ratio of parallel computing transmittance at different resolutions

      Resolution /

      cm－1

      		Serial program /msParallelprogram /msRatio
      0.50002807.541.667.5
      0.050022187.263.1351.6
      0.0100107742.0187.3575.3
      0.00101168374.41555.5751.2
      0.000111017332.313705.0803.9
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    Zhiang Ma, Dacheng Li, Jun Wu, Chen Cheng. Research on Parallel Computing Methods for High-Resolution Atmospheric Spectral Lines[J]. Acta Optica Sinica, 2024, 44(18): 1801011

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    Paper Information

    Category: Atmospheric Optics and Oceanic Optics

    Received: Jan. 2, 2024

    Accepted: Mar. 4, 2024

    Published Online: Aug. 21, 2024

    The Author Email: Wu Jun (wujun@aiofm.ac.cn), Cheng Chen (chengchen@aiofm.ac.cn)

    DOI:10.3788/AOS232018

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology