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Main README file updated with latest run in Magnus
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@juanc-guzman
juanc-guzman committed Oct 31, 2019
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Expand Up @@ -146,52 +146,48 @@ $ srun -N 1 -n 24 ./tConvolveMPI > tConvolveMPI_np24.out

```text
$ grep 'Continuum gridding performance' tConvolveMPI_np??.out
tConvolveMPI_np01.out: Continuum gridding performance: 0.778712 (Mvis/sec) / 0.093312 (Mvis/sec) = 8.34526x requirement
tConvolveMPI_np04.out: Continuum gridding performance: 0.63073 (Mvis/sec) / 0.093312 (Mvis/sec) = 6.75937x requirement
tConvolveMPI_np08.out: Continuum gridding performance: 0.518894 (Mvis/sec) / 0.093312 (Mvis/sec) = 5.56085x requirement
tConvolveMPI_np12.out: Continuum gridding performance: 0.469241 (Mvis/sec) / 0.093312 (Mvis/sec) = 5.02874x requirement
tConvolveMPI_np16.out: Continuum gridding performance: 0.419676 (Mvis/sec) / 0.093312 (Mvis/sec) = 4.49756x requirement
tConvolveMPI_np20.out: Continuum gridding performance: 0.369281 (Mvis/sec) / 0.093312 (Mvis/sec) = 3.95749x requirement
tConvolveMPI_np24.out: Continuum gridding performance: 0.324967 (Mvis/sec) / 0.093312 (Mvis/sec) = 3.48259x requirement
tConvolveMPI_np01.out: Continuum gridding performance (per process): 294.649 (Mpix/sec)
tConvolveMPI_np04.out: Continuum gridding performance (per process): 241.014 (Mpix/sec)
tConvolveMPI_np08.out: Continuum gridding performance (per process): 195.967 (Mpix/sec)
tConvolveMPI_np16.out: Continuum gridding performance (per process): 164.975 (Mpix/sec)
tConvolveMPI_np20.out: Continuum gridding performance (per process): 145.151 (Mpix/sec)
tConvolveMPI_np24.out: Continuum gridding performance (per process): 126.717 (Mpix/sec)
```

```text
$ grep 'Continuum degridding performance' tConvolveMPI_np??.out
tConvolveMPI_np01.out: Continuum degridding performance: 0.550931 (Mvis/sec) / 0.093312 (Mvis/sec) = 5.90418x requirement
tConvolveMPI_np04.out: Continuum degridding performance: 0.461288 (Mvis/sec) / 0.093312 (Mvis/sec) = 4.9435x requirement
tConvolveMPI_np08.out: Continuum degridding performance: 0.383865 (Mvis/sec) / 0.093312 (Mvis/sec) = 4.11378x requirement
tConvolveMPI_np12.out: Continuum degridding performance: 0.349371 (Mvis/sec) / 0.093312 (Mvis/sec) = 3.74412x requirement
tConvolveMPI_np16.out: Continuum degridding performance: 0.330492 (Mvis/sec) / 0.093312 (Mvis/sec) = 3.54179x requirement
tConvolveMPI_np20.out: Continuum degridding performance: 0.318689 (Mvis/sec) / 0.093312 (Mvis/sec) = 3.4153x requirement
tConvolveMPI_np24.out: Continuum degridding performance: 0.300729 (Mvis/sec) / 0.093312 (Mvis/sec) = 3.22284x requirement
tConvolveMPI_np01.out: Continuum degridding performance (per process): 206.756 (Mpix/sec)
tConvolveMPI_np04.out: Continuum degridding performance (per process): 175.339 (Mpix/sec)
tConvolveMPI_np08.out: Continuum degridding performance (per process): 142.056 (Mpix/sec)
tConvolveMPI_np16.out: Continuum degridding performance (per process): 124.577 (Mpix/sec)
tConvolveMPI_np20.out: Continuum degridding performance (per process): 119.049 (Mpix/sec)
tConvolveMPI_np24.out: Continuum degridding performance (per process): 113.613 (Mpix/sec)
```

```text
$ grep 'Spectral gridding performance' tConvolveMPI_np??.out
tConvolveMPI_np01.out: Spectral gridding performance: 5.71272 (Mvis/sec) / 0.360806 (Mvis/sec) = 15.8332x requirement
tConvolveMPI_np04.out: Spectral gridding performance: 5.54713 (Mvis/sec) / 0.360806 (Mvis/sec) = 15.3743x requirement
tConvolveMPI_np08.out: Spectral gridding performance: 4.97081 (Mvis/sec) / 0.360806 (Mvis/sec) = 13.7769x requirement
tConvolveMPI_np12.out: Spectral gridding performance: 4.16035 (Mvis/sec) / 0.360806 (Mvis/sec) = 11.5307x requirement
tConvolveMPI_np16.out: Spectral gridding performance: 3.544 (Mvis/sec) / 0.360806 (Mvis/sec) = 9.82244x requirement
tConvolveMPI_np20.out: Spectral gridding performance: 3.03771 (Mvis/sec) / 0.360806 (Mvis/sec) = 8.41924x requirement
tConvolveMPI_np24.out: Spectral gridding performance: 2.63967 (Mvis/sec) / 0.360806 (Mvis/sec) = 7.31603x requirement
tConvolveMPI_np01.out: Spectral gridding performance (per process): 482.345 (Mpix/sec)
tConvolveMPI_np04.out: Spectral gridding performance (per process): 482.345 (Mpix/sec)
tConvolveMPI_np08.out: Spectral gridding performance (per process): 431.572 (Mpix/sec)
tConvolveMPI_np16.out: Spectral gridding performance (per process): 300.912 (Mpix/sec)
tConvolveMPI_np20.out: Spectral gridding performance (per process): 258.263 (Mpix/sec)
tConvolveMPI_np24.out: Spectral gridding performance (per process): 224.654 (Mpix/sec)
```

```text
$ grep 'Spectral degridding performance' tConvolveMPI_np??.out
tConvolveMPI_np01.out: Spectral degridding performance: 4.61147 (Mvis/sec) / 0.360806 (Mvis/sec) = 12.781x requirement
tConvolveMPI_np04.out: Spectral degridding performance: 4.39945 (Mvis/sec) / 0.360806 (Mvis/sec) = 12.1934x requirement
tConvolveMPI_np08.out: Spectral degridding performance: 4.07183 (Mvis/sec) / 0.360806 (Mvis/sec) = 11.2854x requirement
tConvolveMPI_np12.out: Spectral degridding performance: 3.61087 (Mvis/sec) / 0.360806 (Mvis/sec) = 10.0078x requirement
tConvolveMPI_np16.out: Spectral degridding performance: 3.08671 (Mvis/sec) / 0.360806 (Mvis/sec) = 8.55503x requirement
tConvolveMPI_np20.out: Spectral degridding performance: 2.79381 (Mvis/sec) / 0.360806 (Mvis/sec) = 7.74324x requirement
tConvolveMPI_np24.out: Spectral degridding performance: 2.3922 (Mvis/sec) / 0.360806 (Mvis/sec) = 6.63015x requirement
tConvolveMPI_np01.out: Spectral degridding performance (per process): 390.47 (Mpix/sec)
tConvolveMPI_np04.out: Spectral degridding performance (per process): 377.005 (Mpix/sec)
tConvolveMPI_np08.out: Spectral degridding performance (per process): 348.93 (Mpix/sec)
tConvolveMPI_np16.out: Spectral degridding performance (per process): 264.512 (Mpix/sec)
tConvolveMPI_np20.out: Spectral degridding performance (per process): 235.967 (Mpix/sec)
tConvolveMPI_np24.out: Spectral degridding performance (per process): 204.997 (Mpix/sec)
```

### tConvolveACC

Note that the performance numbers quoted here are the same as those quoted in
tConvolveMPI. That is, assuming ~ 12,000 and 15,000 separate processing units
tConvolveMPI. That is, assuming ~ 12,000 and 8,400 separate processing units
for continuum and spectral line observing respectively. If GPUs were used for
gridding instead of multi-core CPUs, the reduction in processing units would
need to be accounted for in the performance numbers (where here it is assumed
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