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Table 3

Reconstruction of the nebula NGC 7027 with different image sizes.

m = 10
Algorithm Size Err Sec SpUp SpUp
(Par) (Alg)

2562 0.051 783.9
RL 5122 0.051 4527
It = 10   000 ∗  10242 0.051 17610
20482 0.051 80026

2562 0.051 35.63 22.0
RL_CUDA 5122 0.051 69.77 64.9
It = 10   000 ∗  10242 0.051 149.5 118
20482 0.051 469.1 171

2562 0.052 26.14 30.0
SGP 5122 0.051 143.6 31.5
It = 272 10242 0.051 554.0 31.8
20482 0.051 2493 32.1

2562 0.052 1.797 14.5 19.8
SGP_CUDA 5122 0.052 3.469 41.4 20.1
It = 272 10242 0.052 8.016 69.1 18.7
20482 0.052 25.66 97.2 18.3

m = 15
Algorithm Size Err Sec SpUp SpUp
(Par) (Alg)

2562 0.068 48.27
RL 5122 0.064 278.7
It = 612 10242 0.062 1068
20482 0.062 4897

2562 0.068 2.219 21.8
RL_CUDA 5122 0.064 4.109 67.8
It = 612 10242 0.062 9.250 115
20482 0.062 29.13 168

2562 0.068 3.016 16.0
SGP 5122 0.064 16.95 16.4
It = 31 10242 0.062 65.22 16.4
20482 0.061 290.8 16.8

2562 0.068 0.218 13.8 10.2
SGP_CUDA 5122 0.064 0.421 40.3 9.76
It = 31 10242 0.062 1.063 61.4 8.70
20482 0.061 3.406 85.4 8.55

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