Hi Chris -
Looking at one of my sims, it looks like an all-rx coadd is 5.4 Mb and a
per-rx coadd is 14 Mb. Both of which are much smaller that what we
predicted earlier due to getting rid of more diagnostic information.
Sarah
On Sun, Jul 21, 2013 at 4:06 PM, Chris Sheehy <csheehy(a)uchicago.edu> wrote:
Hi Sarah,
One option we discussed is to discussed is to just coadd over receiver -
and then since we save the ac structure, we can
further coadd that over the
array. This should be alright with the signflip noise sims because the
signs are flipped by scanset.
This must be true. If we coadd everything per-rx then it's computationally
trivial to make all-rx maps from those.
It must increase the size of the Keck simulation on disk, though. How big
is a simulated Keck per-rx coadded map vs. a map coadded over all
receivers? I think you said that the all-rx map was something like 5 MB
(after stripping out all the diagnostic information). Since an individual
Keck receiver will make a fully filled in map, I'm guessing .mat
compression won't help us and the per-rx maps will be something like 5x
bigger. So we should multiply the estimates for the size of the Keck simset
by 6 for coadding per-rx. What is that?
-Chris
On Sun, Jul 21, 2013 at 11:46 AM, Sarah Stokes Kernasovskiy <
sstokes(a)stanford.edu> wrote:
> Hi,
>
> Stefan and I were discussing which coaddtypes to use for the Keck sims.
> It seems like we probably want to coadd by receiver and well as overall.
> This does complicate the process a little though - that makes a lot of more
> maps/coadds.
>
> One option we discussed is to discussed is to just coadd over receiver -
and then since we save the ac structure, we can
further coadd that over the
array. This should be alright with the signflip noise sims because the
signs are flipped by scanset.
>
> Anyone have any opinions as to weather we need the by-rx coadds?
>
> Thanks!
> -Sarah
>
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--
**********************************************************************
Christopher Sheehy - Ph.D. candidate - University of Chicago
Research Specialist, University of Minnesota, Department of Physics
Room 220 Tate, 116 Church Street S.E. Minneapolis, MN, 55455
Tel: 612-625-1802 Fax: 612-624-4578 email: csheehy(a)uchicago.edu
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