Graphics processing unit implementation of the F -statistic for continuous gravitational wave searches
- Resource Type
- Authors
- Liam Dunn; Patrick Clearwater; Andrew Melatos; Karl Wette
- Source
- Classical and Quantum Gravity. 39:045003
- Subject
- Physics and Astronomy (miscellaneous)
010308 nuclear & particles physics
0103 physical sciences
ComputingMethodologies_DOCUMENTANDTEXTPROCESSING
FOS: Physical sciences
General Relativity and Quantum Cosmology (gr-qc)
010303 astronomy & astrophysics
01 natural sciences
General Relativity and Quantum Cosmology
- Language
- ISSN
- 1361-6382
0264-9381
The $\mathcal{F}$-statistic is a detection statistic used widely in searches for continuous gravitational waves with terrestrial, long-baseline interferometers. A new implementation of the $\mathcal{F}$-statistic is presented which accelerates the existing "resampling" algorithm using graphics processing units (GPUs). The new implementation runs between 10 and 100 times faster than the existing implementation on central processing units without sacrificing numerical accuracy. The utility of the GPU implementation is demonstrated on a pilot narrowband search for four newly discovered millisecond pulsars in the globular cluster Omega Centauri using data from the second Laser Interferometer Gravitational-Wave Observatory observing run. The computational cost is $17.2$ GPU-hours using the new implementation, compared to 1092 core-hours with the existing implementation.
Comment: Accepted for publication in Classical and Quantum Gravity. 19 pages, 4 figures