Table 2
Speedup for simultaneous vs. consecutive SHTs on a HEALPix grid with Nside = 1024 and lmax = 2048.
| Transforms | Tsimul/s | Tseparate/s | Speedup |
|
|
|||
| 1a0 | 12.65 | 12.65 | 1.00 |
| 2a0 | 18.06 | 25.30 | 1.40 |
| 3a0 | 23.47 | 37.95 | 1.62 |
| 5a0 | 34.77 | 63.25 | 1.82 |
| 10a0 | 62.56 | 126.50 | 2.02 |
| 3a0+3m0 | 41.72 | 77.46 | 1.85 |
| 1a0+1a1+1a2+1m0+1m1+1m2 | 78.79 | 129.44 | 1.64 |
| 4m2 | 63.68 | 112.40 | 1.77 |
Notes. The transforms are specified in an abbreviated fashion, where “5a2” signifies “5 alm → map SHTs of spin 2”, and “3m0” stands for “3 map → alm SHTs of spin 0”. The runs were performed on a single CPU core.
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