Research Article
Using Coarrays to Parallelize Legacy Fortran Applications: Strategy and Case Study
Table 3
Weak scaling performance of coarray version.
| Number of images | Number of bands | Number of particles | Particles per image | Time in seconds | Runtime per particle | Efficiency |
| 1 | 128 | 33024 | 33024 | 44.279 | | 1.000 | 4 | 256 | 131584 | 32896 | 44.953 | | 0.978 | 16 | 512 | 525312 | 32832 | 49.400 | | 0.893 |
| 2 | 256 | 131584 | 65792 | 101.03 | | 1.000 | 8 | 512 | 525312 | 65664 | 102.11 | | 0.987 | 32 | 1024 | 2099200 | 65600 | 129.75 | | 0.777 |
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