Nebula: Completing the SETI@home pipeline

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Profile BilBg
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Message 1830724 - Posted: 15 Nov 2016, 13:21:54 UTC - in response to Message 1830654.  

This resolution divides the sphere into 2^26 (about 54 million) pixels...

The other (cosmetic) typo is that 2^26 == 67108864 which is not really "about 54 million"
 


- ALF - "Find out what you don't do well ..... then don't do it!" :)
 
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Message 1830757 - Posted: 16 Nov 2016, 2:28:32 UTC

Ok. just want to be clear on 2 questions..

Do I have to do anything except keep BOINC updated and will I need to join a new project?
If you don't touch it, you can't break it.
;
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Message 1830758 - Posted: 16 Nov 2016, 2:33:55 UTC - in response to Message 1830724.  

sorry bud..it got the browser wrong. ;-D
If you don't touch it, you can't break it.
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Message 1831491 - Posted: 19 Nov 2016, 22:56:16 UTC

I think it is an outstanding idea to wrap up the current project, and does credit to David Anderson's integrity, not that he needs it I am sure. The present technology has probably done all that it can, and there is no point in spinning wheels (and using energy) unnecessarily. On with the show.
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Message 1831572 - Posted: 20 Nov 2016, 14:25:38 UTC - in response to Message 1831491.  

I think it is an outstanding idea to wrap up the current project, and does credit to David Anderson's integrity, not that he needs it I am sure. The present technology has probably done all that it can, and there is no point in spinning wheels (and using energy) unnecessarily. On with the show.

There is no "spinning wheels unnessarily" cause continuing data accumulation at least increase robustness of results and sensitivity of search too.
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Message 1831589 - Posted: 20 Nov 2016, 15:23:11 UTC - in response to Message 1831572.  

There is no "spinning wheels unnessarily" cause continuing data accumulation at least increase robustness of results and sensitivity of search too.

But I think it will be far more productive to use better telescopes and frequencies more suited to the search. I limit my contribution now because I think it is unlikely to be worth the electricity re-doing the same old thing more or less. When the new stuff gets online, that will be worth considering.
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Message 1831610 - Posted: 20 Nov 2016, 17:40:01 UTC

Also the new data sources provide views of parts of the sky that haven't been surveyed yet. This is particularly true for telescopes in the Southern Hemisphere, and at high latitudes (northern), both of which are unreachable by the Arecibo telescope.
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Message 1831635 - Posted: 20 Nov 2016, 22:10:52 UTC - in response to Message 1831589.  

There is no "spinning wheels unnessarily" cause continuing data accumulation at least increase robustness of results and sensitivity of search too.

But I think it will be far more productive to use better telescopes and frequencies more suited to the search. I limit my contribution now because I think it is unlikely to be worth the electricity re-doing the same old thing more or less. When the new stuff gets online, that will be worth considering.

It's all very subjective.
Some peoples think to spend anything on "green mans" is waste of time, some don't.
Better telescopes? Like what? Better frequencies? Again, like what? Any new ideas with good ground what freq range we should use instead of current one?
New telescopes not considerably "better". They add new sources of data. So we can accumulate more and increase result robustness and sensitivity more.
Time average <=> ensemble average.
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Message 1831636 - Posted: 20 Nov 2016, 22:11:28 UTC - in response to Message 1831610.  

Also the new data sources provide views of parts of the sky that haven't been surveyed yet. This is particularly true for telescopes in the Southern Hemisphere, and at high latitudes (northern), both of which are unreachable by the Arecibo telescope.

That's new addition indeed.
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Message 1831748 - Posted: 21 Nov 2016, 16:10:17 UTC

Effelsberg radio telescope in Germany has a 100 meters steerable antenna. Sardinia telescope in Sardinia has a 64 meters dish with adaptive optics. They both could give data up North.
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Message 1831784 - Posted: 21 Nov 2016, 20:35:56 UTC

But as DA has succinctly said. we simply don't have the back end processing power to deal with data received


It's incredible with so many people involved in this project, so many high end CPU's and GPU's and we can't keep up with data collected?
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Message 1831786 - Posted: 21 Nov 2016, 20:51:28 UTC - in response to Message 1831784.  
Last modified: 21 Nov 2016, 20:53:50 UTC

But as DA has succinctly said. we simply don't have the back end processing power to deal with data received


It's incredible with so many people involved in this project, so many high end CPU's and GPU's and we can't keep up with data collected?

The amount of Credit Seti pays is bugger all compared to other projects, so those with the big hardware crunch for other projects, the big crunchers still here are those that are doing more for interest in the project than for credit.
If Seti gave out credit that was at least on par with other projects, there would be a big influx of computing power to this project.

Also the latest GPU hardware has gotten a long way head of the development of applications that can take advantage of it. The SoG application is one example of current work underway to make better use of the more recent hardware, but it still has a way to go.
Improved applications alone could result in a 5-10 times improvement in processing ability from the supported hardware.
Credit that's on par with other projects could more than double the number of active hosts, many of them being high powered systems.

EDIT- and as we've seen lately, Seti is having trouble supporting the current load. How well would it cope with twice the number of users or 5-10 times the WUs being crunched per hour?
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Message 1831787 - Posted: 21 Nov 2016, 20:51:56 UTC - in response to Message 1831750.  

Yes guys, I fully accept that there are other telescopes than Arecibo and Green Bank, that we could get data from. But as DA has succinctly said. we simply don't have the back end processing power to deal with data received. In any case we only piggy back on where the scopes are pointing, we have no input as to where that might be.

Only way to do that is to get a lot of Gamers in this show...they have some serious punching in those GPUs!

But again, someone needs to make some PR stunt for that! & nobody is not doing a thing... :/


non-profit org. Play4Life in Zagreb, Croatia, EU
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Message 1831816 - Posted: 21 Nov 2016, 23:49:56 UTC

From what I read Nebula is going to run on a UNIX cluster, not on a variety of HW/SW architectures like the front-end SETI@home.
Tullio
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Message 1831875 - Posted: 22 Nov 2016, 8:48:42 UTC

From what I read Nebula is going to run on a UNIX cluster, not on a variety of HW/SW architectures like the front-end SETI@home.
Tullio


We are talking about back end for Seti@home Part II (Seti@home 10)
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Message 1831908 - Posted: 22 Nov 2016, 14:13:09 UTC - in response to Message 1831786.  

EDIT- and as we've seen lately, Seti is having trouble supporting the current load. How well would it cope with twice the number of users or 5-10 times the WUs being crunched per hour?

I was surprised when I got the recent email asking for help, since I thought they were at the limit too. But if they could get the 5-10 times improvement in GPU processing (I have no idea how), that could help reduce the server load if they made the work units larger, I would think, depending on where the bottleneck is.
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Message 1833209 - Posted: 29 Nov 2016, 21:30:54 UTC - in response to Message 1830654.  

Yup. Thanks for noticing this.
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Message 1833417 - Posted: 1 Dec 2016, 2:19:28 UTC - in response to Message 1829052.  

Read about Nebula, a new and faster back end for SETI@home. Nebula removes RFI and finds persistent signals. Its goal is to let us finish the current SETI@home experiment.

David,

thank you for this info, it is much appreciated,

Best Wishes,
Byron.
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Message 1833419 - Posted: 1 Dec 2016, 2:25:24 UTC - in response to Message 1833417.  
Last modified: 1 Dec 2016, 2:26:36 UTC

Read about Nebula, a new and faster back end for SETI@home. Nebula removes RFI and finds persistent signals. Its goal is to let us finish the current SETI@home experiment.

David,

thank you for this info, it is much appreciated,

Best Wishes,
Byron.

A major breakthrough fo the project.
+1
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Message 1833500 - Posted: 1 Dec 2016, 17:44:13 UTC - in response to Message 1833419.  
Last modified: 1 Dec 2016, 18:37:14 UTC

Read about Nebula, a new and faster back end for SETI@home. Nebula removes RFI and finds persistent signals. Its goal is to let us finish the current SETI@home experiment.

Hi David,
thank you for this info, it is much appreciated,
Best Wishes,
Byron.

A major breakthrough fo the project.
+1
Hi betreger, thank you.


~~~~~~~~~~~~~~~~~~~

Hi David, and thank you,

the following I read some where, but it is my favorite thought :-)

While a successful SETI Signal,
may be a long time in coming or,
we could Receive the next WOW Signal in the next 5 Minuets,
or even if it takes Generations of Humans, SETI@home is still worth while,
The knowledge gained from any failure only contributes to successes,
in science in the future. The human condition motivates us humans,
to learn about everything and continue despite the overwhelming,
odds until we humans finally succeed. Many of the things,
we take for granted today , are the direct result of this human behavior,
Things like computers, light bulbs, telephones, airplanes,
and rockets and spacecraft ..... to furthest edge of our solar system, are among them.

The only requirement is that we try.
The probability of success is difficult to estimate
but if we never try, the chance of success is , zero

Best Wishes, and thank you David,
Byron,
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Message boards : News : Nebula: Completing the SETI@home pipeline


 
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