Non Uniform Discrete Fourier Transform applied to OGLE-III Type 1 Cepheid photometry database.
(linux)
$ export JULIA_NUM_THREADS=$(nprocs)
$julia -p auto Main.jl n
where n is the desired number of stars
Output file results.dat. 5 columns: star id, execution time, period, ephemeris and period quality factor (a.k.a. |F(T)|^2 on period T). Can be loaded on Julia with read_float_table from FileOperations.jl.
With n=1840 on Intel Core i3 (quad core) legacy generation, Windows and Julia v1.1, CPU time was 473.475s and elapsed (calculation and output) time was 143.372s giving 330.2% of time improvement.
-
Udalski, Szymański, Soszyński and Poleski, 2008, The Optical Gravitational Lensing Experiment. Final Reductions of the OGLE-III Data, Acta Astron., 58, 69.
-
Soszyński et al., 2008a, The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. I. Classical Cepheids in the Large Magellanic Cloud, Acta Astron., 58, 163