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Table 2
Reconstruction of nebula, galaxy, and Crab as a mosaic of the reconstructions of four subimages with boundary effect correction.
| Nebula (m = 10) | Galaxy (m = 10) | Crab (m = 10) | ||||||||||
| Algorithm | It | Err | Sec | SpUp | It | Err | Sec | SpUp | It | Err | Sec | SpUp |
|
|
||||||||||||
| RL | 818 | 0.021 | 243.8 | – | 10 000∗ | 0.144 | 2813 | – | 4070 | 0.129 | 1146 | – |
| RL_CUDA | 818 | 0.021 | 12.16 | 20.0 | 10 000∗ | 0.144 | 141.5 | 19.9 | 4070 | 0.129 | 61.55 | 18.6 |
| SGP | 96 | 0.022 | 35.16 | – | 435 | 0.144 | 171.6 | – | 129 | 0.129 | 46.42 | – |
| SGP_CUDA | 96 | 0.022 | 3.406 | 10.3 | 435 | 0.148 | 14.41 | 11.9 | 129 | 0.133 | 4.342 | 10.7 |
|
|
||||||||||||
| Nebula (m = 12) | Galaxy (m = 12) | Crab (m = 12) | ||||||||||
| Algorithm | It | Err | Sec | SpUp | It | Err | Sec | SpUp | It | Err | Sec | SpUp |
|
|
||||||||||||
| RL | 127 | 0.026 | 38.42 | – | 2347 | 0.160 | 696.9 | – | 696 | 0.137 | 196.5 | – |
| RL_CUDA | 127 | 0.026 | 2.108 | 18.2 | 2347 | 0.160 | 35.13 | 19.8 | 696 | 0.137 | 10.99 | 17.9 |
| SGP | 21 | 0.026 | 9.563 | – | 126 | 0.161 | 51.11 | – | 53 | 0.137 | 19.41 | – |
| SGP_CUDA | 21 | 0.026 | 0.874 | 10.9 | 126 | 0.161 | 4.438 | 11.5 | 53 | 0.137 | 1.922 | 10.1 |
|
|
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| Nebula (m = 15) | Galaxy (m = 15) | Crab (m = 15) | ||||||||||
| Algorithm | It | Err | Sec | SpUp | It | Err | Sec | SpUp | It | Err | Sec | SpUp |
|
|
||||||||||||
| RL | 96 | 0.064 | 27.58 | – | 297 | 0.234 | 89.22 | – | 99 | 0.172 | 28.08 | – |
| RL_CUDA | 96 | 0.064 | 1.703 | 16.2 | 297 | 0.234 | 4.547 | 19.6 | 99 | 0.172 | 1.704 | 16.5 |
| SGP | 10 | 0.061 | 4.234 | – | 17 | 0.236 | 7.375 | – | 9 | 0.172 | 3.859 | – |
| SGP_CUDA | 10 | 0.061 | 0.407 | 10.4 | 17 | 0.236 | 0.657 | 11.2 | 9 | 0.172 | 0.360 | 10.7 |
Notes. The number of iterations is the one required for reconstructing each subdomain, while the reported computational time is the total time required for the 4 reconstructions.
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