[Difx-users] Performance enhancements with zoom bands? {External}

[Adam Deller]

Hi Mike,

Can you provide more details as to the amount of slowdown, the number of
zoom bands, etc?  If you have some example where you get a certain speed
without zoom bands, and then you add zoom bands and it slows down
significantly, that would be very helpful.  Normally I would expect zoom
bands to have virtually zero impact on correlation speed, so this is
surprising.

Cheers,
Adam

On Wed, 2 Aug 2023 at 01:38, Michael Dutka via Difx-users <
difx-users at listmgr.nrao.edu> wrote:

> Hi DiFX Users,
> We're having issues with long correlation times for experiments using zoom
> bands.  Since we're still in the process of transitioning to VGOS for
> geodetic observing we're attempting to correlate data from VGOS stations
> and Legacy S/X antennas still in order to have good coverage so zoom bands
> are a must. I was wondering if there were any tricks that people have
> discovered that would enhance the correlation speed of zoom bands?  Do
> later versions of DiFX (like 2.8.1) handle these better?  Or are there some
> more optimal ways to set up the machines and threads file?
> -Mike
>
>
> --
> Dr. Michael S. Dutka
> US Navy (civilian)
> USNO Phone Number- 202-762-0242
> Cell- 301-996-3588
>
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-- 
!=============================================================!
Prof. Adam Deller
Centre for Astrophysics & Supercomputing
Swinburne University of Technology
John St, Hawthorn VIC 3122 Australia
phone: +61 3 9214 5307
fax: +61 3 9214 8797
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