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studies:score_mip:cpu_times

CPU times

  • solar angle and albedo does not affect CPU time much, for mystic the CPU increases slightly with increasing surface albedo
  • for cases A to D, disort requires approx. 0.18 s per wavelength, for case E it is more efficient (0.078 s) since wavelength loop within uvspec (for aerosol/clouds it is currently not possible to put in optical properties data in required format).
  • for mystic 100.000 photons were used for each wavelength, CPU time estimated for cases A-D from calculation time for first wavelength in band (sza=10, albedo=0.05).
solver case A case B case C case D case E
Band 1, window 1
disort2 180 s 180 s 180 s 180 s 78 s
mystic-scalar 2420 s 2640 s 2910 s 3300 s
mystic-vector 2800 s 3440 s 3840 s
Band 1, window 2
disort2 72 s 72 s 72 s 72 s 31 s
mystic-scalar 924 s 1060 s 1172 s1312 s
mystic-vector 1104 s 1372 s 1528 s
Band 2, window 1
disort2 72 s 72 s 72 s 72 s 31 s
mystic-scalar 888 s 1008 s 1008s 1176 s
mystic-vector 1036 s 1284 s 1268 s
Band 3, window 1
disort2 72 s 72 s 72 s 72 s 31 s
mystic-scalar 868 s 992 s 932 s 1052s
mystic-vector 1024 s 1268 s 1140 s
Band 3, window 2
disort2 72 s 72 s 72 s 72 s 31 s
mystic-scalar 867 s 980 s 940 s 1048 s
mystic-vector 1020 s 1268 s 1128 s

CPU time of test program

The output of testpol is:

   1250000.0
   CPU time :   0.78287999999999991       -   9.98999999999999888E-004  =   0.78188099999999994
studies/score_mip/cpu_times.txt · Last modified: 2018/05/04 08:39 (external edit)