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Table 4

Reconstruction of the galaxy NGC 6946 with different image sizes.

m = 10
Algorithm Size Err Sec SpUp SpUp
(Par) (Alg)
2562 0.293 786.0 – –
RL 5122 0.293 4545 – –
It = 10   000 ∗  10242 0.293 17402 – –
20482 0.293 80022 – –
2562 0.293 36.64 21.5 –
RL_CUDA 5122 0.293 67.94 66.9 –
It = 10   000 ∗  10242 0.293 146.7 119 –
20482 0.293 463.9 172 –
2562 0.292 88.72 – 8.86
SGP 5122 0.291 484.3 – 9.38
It = 928 10242 0.291 1854 – 9.19
20482 0.291 8386 – 9.54
2562 0.293 7.219 12.3 5.08
SGP_CUDA 5122 0.293 11.14 43.5 6.10
It = 928 10242 0.293 25.86 71.7 5.67
20482 0.293 81.02 104 5.73
m = 15
Algorithm Size Err Sec SpUp SpUp
(Par) (Alg)
2562 0.311 114.9 – –
RL 5122 0.307 644.3 – –
It = 1461 10242 0.306 2574 – –
20482 0.306 11689 – –
2562 0.311 5.375 21.4 –
RL_CUDA 5122 0.307 9.656 66.7 –
It = 1461 10242 0.306 22.41 115 –
20482 0.306 68.44 171 –
2562 0.311 3.672 – 31.3
SGP 5122 0.308 20.36 – 31.6
It = 38 10242 0.307 78.20 – 32.9
20482 0.306 354.0 – 33.0
2562 0.311 0.266 13.8 20.2
SGP_CUDA 5122 0.307 0.531 38.3 18.2
It = 38 10242 0.307 1.344 58.2 16.7
20482 0.306 4.188 84.5 16.3

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