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Prospects of GPU Tensor Core Correlation for the SMA and the ngEHT

Yu, Wei ; Romein, John W. ; Dursi, L. Jonathan ; Lu, Ru-Sen ; Pope, Adrian ; Callanan, Gareth LU ; Pesce, Dominic W. ; Blackburn, Lindy ; Merry, Bruce and Srinivasan, Ranjani , et al. (2023) In Galaxies 11(1).
Abstract
Building on the base of the existing telescopes of the Event Horizon Telescope (EHT) and ALMA, the next-generation EHT (ngEHT) aspires to deploy ∼10 more stations. The ngEHT targets an angular resolution of ∼15 microarcseconds. This resolution is achieved using Very Long Baseline Interferometry (VLBI) at the shortest radio wavelengths ∼1 mm. The Submillimeter Array (SMA) is both a standalone radio interferometer and a station of the EHT and will conduct observations together with the new ngEHT stations. The future EHT + ngEHT array requires a dedicated correlator to process massive amounts of data. The current correlator-beamformer (CBF) of the SMA would also benefit from an upgrade, to expand the SMA’s bandwidth and also match the EHT +... (More)
Building on the base of the existing telescopes of the Event Horizon Telescope (EHT) and ALMA, the next-generation EHT (ngEHT) aspires to deploy ∼10 more stations. The ngEHT targets an angular resolution of ∼15 microarcseconds. This resolution is achieved using Very Long Baseline Interferometry (VLBI) at the shortest radio wavelengths ∼1 mm. The Submillimeter Array (SMA) is both a standalone radio interferometer and a station of the EHT and will conduct observations together with the new ngEHT stations. The future EHT + ngEHT array requires a dedicated correlator to process massive amounts of data. The current correlator-beamformer (CBF) of the SMA would also benefit from an upgrade, to expand the SMA’s bandwidth and also match the EHT + ngEHT observations. The two correlators share the same basic architecture, so that the development time can be reduced using common technology for both applications. This paper explores the prospects of using Tensor Core Graphics Processing Units (TC GPU) as the primary digital signal processing (DSP) engine. This paper describes the architecture, aspects of the detailed design, and approaches to performance optimization of a CBF using the “FX” approach. We describe some of the benefits and challenges of the TC GPU approach. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ngEHT, VLBI, SMA, correlation, GPU, Tensor Core
in
Galaxies
volume
11
issue
1
article number
13
pages
14 pages
publisher
MDPI AG
external identifiers
  • scopus:85148876899
ISSN
2075-4434
DOI
10.3390/galaxies11010013
language
English
LU publication?
yes
id
f5213263-7eb1-4610-ac76-eb32f472c4c6
date added to LUP
2023-01-31 08:38:00
date last changed
2024-02-18 12:51:42
@article{f5213263-7eb1-4610-ac76-eb32f472c4c6,
  abstract     = {{Building on the base of the existing telescopes of the Event Horizon Telescope (EHT) and ALMA, the next-generation EHT (ngEHT) aspires to deploy ∼10 more stations. The ngEHT targets an angular resolution of ∼15 microarcseconds. This resolution is achieved using Very Long Baseline Interferometry (VLBI) at the shortest radio wavelengths ∼1 mm. The Submillimeter Array (SMA) is both a standalone radio interferometer and a station of the EHT and will conduct observations together with the new ngEHT stations. The future EHT + ngEHT array requires a dedicated correlator to process massive amounts of data. The current correlator-beamformer (CBF) of the SMA would also benefit from an upgrade, to expand the SMA’s bandwidth and also match the EHT + ngEHT observations. The two correlators share the same basic architecture, so that the development time can be reduced using common technology for both applications. This paper explores the prospects of using Tensor Core Graphics Processing Units (TC GPU) as the primary digital signal processing (DSP) engine. This paper describes the architecture, aspects of the detailed design, and approaches to performance optimization of a CBF using the “FX” approach. We describe some of the benefits and challenges of the TC GPU approach.}},
  author       = {{Yu, Wei and Romein, John W. and Dursi, L. Jonathan and Lu, Ru-Sen and Pope, Adrian and Callanan, Gareth and Pesce, Dominic W. and Blackburn, Lindy and Merry, Bruce and Srinivasan, Ranjani and Kim, Jongsoo and Weintroub, Jonathan}},
  issn         = {{2075-4434}},
  keywords     = {{ngEHT; VLBI; SMA; correlation; GPU; Tensor Core}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  publisher    = {{MDPI AG}},
  series       = {{Galaxies}},
  title        = {{Prospects of GPU Tensor Core Correlation for the SMA and the ngEHT}},
  url          = {{http://dx.doi.org/10.3390/galaxies11010013}},
  doi          = {{10.3390/galaxies11010013}},
  volume       = {{11}},
  year         = {{2023}},
}