[Pafgbt] PAF beamformer size and cost

[Scott Ransom]

On Monday 08 February 2010 10:09:59 am John Ford wrote:
> > Roughly 50 MB/s is probably a good stake in the ground for the
> > limits of output data bandwidth and storage limitations.  We can
> > probably plan on these capabilities doubling every 2 years or so,
> > but it's not a smooth function of time, of course.
> 
> It's actually the data management that's a problem, not the
>  collection speeds.  It's very easy to do 50-100 MB/sec data rates to
>  disk over 10 gigabit Ethernet.  40 gigabit infiniband is available
>  and almost as cheap as 10 gbe right now.  It's what to do with all
>  those terabytes once you have it on disk.
> 
> I think that any of these designs should include the design of a
>  computer system (software and hardware) to complete the entire
>  scientific data flow, and not just the data acquisition.  We always
>  think about it a little, and then punt it to the future, and we're
>  always sorry...  (I think Scott will agree!)

Oh I definitely agree.  It is the same with active RFI excision...

Scott


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