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The Software Correlator for VGOS VLBI network Data Processing: First Commissioning Tests

I. Surkis, V. Zimovsky, V. Ken, Y. Kurdubova, V. Mishin, N. Mishina, Shantyr V

Transactions of IAA RAS, issue 36, 83–89 (2016)

Keywords: VGOS, Software Correlator, Quasar VLBI network, commissioning

Abstract

The first Russian software correlator for a new VGOS VLBI network was developed and tested in 2014. The correlator was designed to be capable of near-real time processing wideband VLBI observations from 6 stations, 4 frequency channels and 2 polarizations each. The RAS software correlator is based on the FX algorithm and implemented on a hybrid blade-server HPC cluster which contains Tesla K20 GPUs in addition to regular CPUs on each server blade. GPUs are used for the most time-consuming operations. The correlator was tested using simulated and real VLBI data. The tests with a maximal data rate were a success. The new correlator was used to process the VLBI data (UT1UTC determined) received from the new 13-meter telescopes of the VLBI network «Quasar».

Citation

Text

BibTeX

RIS

I. Surkis, V. Zimovsky, V. Ken, Y. Kurdubova, V. Mishin, N. Mishina,  Shantyr V. The Software Correlator for VGOS VLBI network Data Processing:  First Commissioning Tests // Transactions of IAA RAS. — 2016. — Issue 36. — P. 83–89.

@article{surkis2016,
  abstract = {The first Russian software correlator for a new VGOS VLBI network was developed and tested in 2014. The correlator was designed to be capable of near-real time processing wideband VLBI observations from 6 stations, 4 frequency channels and 2 polarizations each. The RAS software correlator is based on the FX algorithm and implemented on a hybrid blade-server HPC cluster which contains Tesla K20 GPUs in addition to regular CPUs on each server blade. GPUs are used for the most time-consuming operations. The correlator was tested using simulated and real VLBI data. The tests with a maximal data rate were a success. The new correlator was used to process the VLBI data (UT1UTC determined) received from the new 13-meter telescopes of the VLBI network «Quasar».},
  author = {I. Surkis and V. Zimovsky and V. Ken and Y. Kurdubova and V. Mishin and N. Mishina and  ShantyrV},
  issue = {36},
  journal = {Transactions of IAA RAS},
  keyword = {VGOS, Software Correlator, Quasar VLBI network, commissioning},
  pages = {83--89},
  title = {The Software Correlator for VGOS VLBI network Data Processing:  First Commissioning Tests},
  url = {http://iaaras.ru/en/library/paper/1084/},
  year = {2016}
}

TY  - JOUR
TI  - The Software Correlator for VGOS VLBI network Data Processing:  First Commissioning Tests
AU  - Surkis, I.
AU  - Zimovsky, V.
AU  - Ken, V.
AU  - Kurdubova, Y.
AU  - Mishin, V.
AU  - Mishina, N.
AU  - ShantyrV, 
PY  - 2016
T2  - Transactions of IAA RAS
IS  - 36
SP  - 83
AB  - The first Russian software correlator for a new VGOS VLBI network was
developed and tested in 2014. The correlator was designed to be
capable of near-real time processing wideband VLBI observations from
6 stations, 4 frequency channels and 2 polarizations each. The RAS
software correlator is based on the FX algorithm and implemented on a
hybrid blade-server HPC cluster which contains Tesla K20 GPUs in
addition to regular CPUs on each server blade. GPUs are used for the
most time-consuming operations. The correlator was tested using
simulated and real VLBI data. The tests with a maximal data rate were
a success. The new correlator was used to process the VLBI data
(UT1UTC determined) received from the new 13-meter telescopes of the
VLBI network «Quasar».
UR  - http://iaaras.ru/en/library/paper/1084/
ER  -