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NN22GC for VLBIGC for VLBIS.Pogrebenko, JIVE, Dwingeloo, NL, ( pogrebenko@jive.nl )
29.06.2006 , Next Generation Correlators Workshop, Groningen, NL
Did I say N2GC?..
VLBI NGC is already there,
Just take EVLA, it can do Mk5global VLBI as a background task,global Mk6 will take just a fractionof its resources
And we can consider something a little bit more funny
Like this:Like this:4-16 stations,4-16 stations,
1-4 Gbps/station1-4 Gbps/station
VLBI solutionVLBI solution(space craft tracking enabled)(space craft tracking enabled)
or or baby-SKA beam formerbaby-SKA beam former
or or FPA descramblerFPA descrambler
((for just under 1 kW for just under 1 kW
thermalthermal)) COMMUNICATION LOGIC
CELLCELLCELLCELL
CELLCELLCELLCELL
CELLCELLCELLCELL
CELLCELLCELLCELL
COMMUNICATION LOGIC
Single board, 16 CELLs,16 of 10G fiber connections
S. Pogrebenko, 10.08.2005 , 04.10.2005 & 12.10.2005, 29.06.2006
It’ll just take about 1 Liter/second water flow to absorb 30 kW of It’ll just take about 1 Liter/second water flow to absorb 30 kW of thermal power to get some 1-2 Tbps aggregated 16-32 station thermal power to get some 1-2 Tbps aggregated 16-32 station
solutionsolution
S. Pogrebenko, 10.08.2005 , 04.10.2005 & 12.10.2005, 29.06.2006
Using “almost” off the shelf Supercomputer-on-chip solution (IBM CELL is an example),
In 5 years of work 2xEVLAs can be squeezed into under 30 kW thermal envelope
for about the same design and manufacturing cost as EVLA-1
Future is bright!Future is bright!Only Sky is a limit!Only Sky is a limit!
Image Credit: NASA, ESA, B. Mobasher (Space Telescope Science Institute and the European Space Agency)
Only SKA is a limit!Only SKA is a limit!
Oops… Did I say Sky?Oops… Did I say Sky?
There are two thick brick wallson the way to wide field
VLBI+SKAFirst one is Nstations square,
So thick that even Super-FXcan’t break it
Second one is even more thicker: When the output data rate exceeds
the input one, the Correlator becomes just a waste of CPU power, money and senseand don’t worth a real time of our real life
S. Pogrebenko, 30.01.1996, 10.08.2005 , 04.10.2005, 12.10.2005, 29.06.2006
And to make it really interesting,And to make it really interesting,let’s talk about scalable let’s talk about scalable
NNssLogLog22(N(Nss) paradigm) paradigm
S. Pogrebenko, 30.01.1996, 10.08.2005 , 04.10.2005, 12.10.2005, 29.06.2006
What I like about software What I like about software correlators on advanced HW correlators on advanced HW
platforms is an easy shift platforms is an easy shift between processing paradigmsbetween processing paradigms
What I like even more is that it
allows to concentrate on the essence of
VLBI,Adding more refined functionality with no
other costs but processing time
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