Accelerating Dedispersion Using Many-core Architectures

@article{77166,
   author = {Novotný, Jan and Adámek, Karel and Clark, M. A. and Giles, Mike and Armour, Wes},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {1},
   doi = {http://dx.doi.org/10.3847/1538-4365/acfef6},
   keywords = {fast radio-burst;southern sky survey;real-time;transient searches;pulsar;algorithms;amber},
   language = {eng},
   issn = {0067-0049},
   journal = {Astrophysical Journal Supplement Series},
   title = {Accelerating Dedispersion Using Many-core Architectures},
   url = {https://iopscience.iop.org/article/10.3847/1538-4365/acfef6},
   volume = {269},
   year = {2023}
}

TY  - JOUR
ID  - 77166
AU  - Novotný, Jan - Adámek, Karel - Clark, M. A. - Giles, Mike - Armour, Wes
PY  - 2023
TI  - Accelerating Dedispersion Using Many-core Architectures
JF  - Astrophysical Journal Supplement Series
VL  - 269
IS  - 1
SP  - "29-1"-"29-12"
EP  - "29-1"-"29-12"
SN  - 00670049
KW  - fast radio-burst;southern sky survey;real-time;transient searches;pulsar;algorithms;amber
UR  - https://iopscience.iop.org/article/10.3847/1538-4365/acfef6
N2  - Astrophysical radio signals are excellent probes of extreme physical processes that emit them. However, to reach Earth, electromagnetic radiation passes through the ionized interstellar medium, introducing a frequency-dependent time delay (dispersion) to the emitted signal. Removing dispersion enables searches for transient signals like fast radio bursts or repeating signals from isolated pulsars or those in orbit around other compact objects. The sheer volume and high resolution of data that next-generation radio telescopes will produce require high-performance computing solutions and algorithms to be used in time-domain data-processing pipelines to extract scientifically valuable results in real time. This paper presents a state-of-the-art implementation of brute force incoherent dedispersion on NVIDIA graphics-processing units and on Intel and AMD central-processing units. We show that our implementation is 4x faster (8-bit 8192 channels input) than other available solutions, and we demonstrate, using 11 existing telescopes, that our implementation is at least 20x faster than real time. This work is part of the AstroAccelerate package.
ER  - 

NOVOTNÝ, Jan, Karel ADÁMEK, M. A. CLARK, Mike GILES a Wes ARMOUR. Accelerating Dedispersion Using Many-core Architectures. \textit{Astrophysical Journal Supplement Series}. GB - Spojené království Velké Británie a, 2023, roč.~269, č.~1, s.~''29-1''-''29-12'', 12 s. ISSN~0067-0049. Dostupné z: https://dx.doi.org/10.3847/1538-4365/acfef6.