A novel greedy approach to harmonic summing using GPUs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21240%2F22%3A00360538" target="_blank" >RIV/68407700:21240/22:00360538 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.ascom.2022.100621" target="_blank" >https://doi.org/10.1016/j.ascom.2022.100621</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ascom.2022.100621" target="_blank" >10.1016/j.ascom.2022.100621</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A novel greedy approach to harmonic summing using GPUs

Popis výsledku v původním jazyce

One-dimensional incoherent harmonic summing is a technique used to improve the sensitivity of Fourier domain search methods. In time-domain radio astronomy, the harmonic sum is a part of the Fourier domain periodicity search, which aims to detect isolated single pulsars. We present a new harmonic sum algorithm based on the greedy approach and an implementation of this on NVIDIA GPUs using the CUDA programming language. The new algorithm determines which samples to add according to short-term gains. We present an evaluation of the sensitivity of the new approach and its performance against the PRESTO harmonic sum a standard used in radio astronomy. The new Greedy harmonic sum has, on average, 20% higher sensitivity whilst it has the same performance as the standard algorithm. This work forms part of the AstroAccelerate project which is a GPU accelerated software package for processing time-domain radio astronomy data.

Název v anglickém jazyce

A novel greedy approach to harmonic summing using GPUs

Popis výsledku anglicky

One-dimensional incoherent harmonic summing is a technique used to improve the sensitivity of Fourier domain search methods. In time-domain radio astronomy, the harmonic sum is a part of the Fourier domain periodicity search, which aims to detect isolated single pulsars. We present a new harmonic sum algorithm based on the greedy approach and an implementation of this on NVIDIA GPUs using the CUDA programming language. The new algorithm determines which samples to add according to short-term gains. We present an evaluation of the sensitivity of the new approach and its performance against the PRESTO harmonic sum a standard used in radio astronomy. The new Greedy harmonic sum has, on average, 20% higher sensitivity whilst it has the same performance as the standard algorithm. This work forms part of the AstroAccelerate project which is a GPU accelerated software package for processing time-domain radio astronomy data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Projekt

<a href="/cs/project/EF16_019%2F0000765" target="_blank" >EF16_019/0000765: Výzkumné centrum informatiky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy and Computing

ISSN

2213-1337

e-ISSN

2213-1345

Svazek periodika

40

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000864897600001

EID výsledku v databázi Scopus

2-s2.0-85135409849