留言板 :
Number crunching :
Allen array (follow-up)
留言板合理
| 作者 | 消息 |
|---|---|
Dr. C.E.T.I. 发送消息 已加入:29 Feb 00 贴子:16019 积分:794,685 近期平均积分:0
|
see OzzFan's Comment: Message 659453 - Posted 14 Oct 2007 3:17:13 UTC - in response to Message ID 658845.
OzzFan's Response:
Copyright © 2007 University of California |
RandyC 发送消息 已加入:20 Oct 99 贴子:714 积分:1,704,345 近期平均积分:0
|
According to David Anderson at the recent Pan-Galactic workshop in Geneva BOINC amounts to 500 Teraflops. Keep in mind that that figure is for ALL of BOINC, not just SETI. Although it would be a good guess that SETI makes up a significant part of it! |
|
DJHill-tampa-1 发送消息 已加入:3 Oct 02 贴子:5 积分:210,564 近期平均积分:0
|
According to David Anderson at the recent Pan-Galactic workshop in Geneva BOINC amounts to 500 Teraflops. Wow! Even if exaggerated, it's not too surprising - that post was from July 2004. Since then, CPU speeds would have doubled three times, and the number of multi-core chips in use has skyrocketed. The number of BOINC users has probably grown, too. |
Clyde C. Phillips, III 发送消息 已加入:2 Aug 00 贴子:1851 积分:5,955,047 近期平均积分:0
|
Would using Allen's (just) one hectare area (when all the dishes go up) be of any benefit to Seti@Home? If used as an interferometer (maybe, I don't know) it would be possible to study a very small area (perhaps only 45 arcseconds across) and make that hectare more sensitive than the (perhaps) four hectares at Arecibo concentrated on something over four times as wide (over three arcminutes). I'm just guessing that that might be true. |
|
Fred W 发送消息 已加入:13 Jun 99 贴子:2524 积分:11,954,210 近期平均积分:0
|
Now that's a definitive answer! One would think ATA would be interested in "buying" the computational capacity we have for the minimal cost of funding the servers. I'm sure there's more to it than that, but it would still be cheap: a post on ZDNet UK (http://www.zdnet.co.uk/tsearch/asci.htm) from 2004 indicated BOINC was equivalnet to a 12 teraflop machine costing $100m, but of course only part of that capacity was allocated to SETI@Home. Hmmm! My finger gets cold when I wet it and wave it around like that, too ;) I guess if anyone should know then it's David Anderson but I do wonder a bit when I hear headline figures like that. F.
|
tullio 发送消息 已加入:9 Apr 04 贴子:8010 积分:2,930,782 近期平均积分:1
|
Now that's a definitive answer! One would think ATA would be interested in "buying" the computational capacity we have for the minimal cost of funding the servers. I'm sure there's more to it than that, but it would still be cheap: a post on ZDNet UK (http://www.zdnet.co.uk/tsearch/asci.htm) from 2004 indicated BOINC was equivalnet to a 12 teraflop machine costing $100m, but of course only part of that capacity was allocated to SETI@Home. According to David Anderson at the recent Pan-Galactic workshop in Geneva BOINC amounts to 500 Teraflops. |
kittyman ![]() 发送消息 已加入:9 Jul 00 贴子:50498 积分:1,018,363,574 近期平均积分:1,004
|
Now that's a definitive answer! One would think ATA would be interested in "buying" the computational capacity we have for the minimal cost of funding the servers. I'm sure there's more to it than that, but it would still be cheap: a post on ZDNet UK (http://www.zdnet.co.uk/tsearch/asci.htm) from 2004 indicated BOINC was equivalnet to a 12 teraflop machine costing $100m, but of course only part of that capacity was allocated to SETI@Home. That's a very intersting angle!!! Should Arecibo actually go dark for Seti in a couple of years, 'selling' our services to someone else doing similar research might be possible to keep things going. "Learn from yesterday. Live for today. Hope for tomorrow." Albert Einstein "With cats." kittyman
|
|
DJHill-tampa-1 发送消息 已加入:3 Oct 02 贴子:5 积分:210,564 近期平均积分:0
|
Now that's a definitive answer! One would think ATA would be interested in "buying" the computational capacity we have for the minimal cost of funding the servers. I'm sure there's more to it than that, but it would still be cheap: a post on ZDNet UK (http://www.zdnet.co.uk/tsearch/asci.htm) from 2004 indicated BOINC was equivalnet to a 12 teraflop machine costing $100m, but of course only part of that capacity was allocated to SETI@Home. Thanks! |
tullio 发送消息 已加入:9 Apr 04 贴子:8010 积分:2,930,782 近期平均积分:1
|
SETI@home has produced BOINC and now many programs are running on this platform. The main exception is Folding@home from Stanford University. But even World Community Grid is switching to BOINC and LHC@home is restarting from London University to cooperate in a huge scientific research program. The merit of this goes to the people who started SETI@home and BOINC. Even if Arecibo should close, there will be no lack of data for us to crunch. Tullio |
KWSN - MajorKong 发送消息 已加入:5 Jan 00 贴子:2892 积分:1,499,890 近期平均积分:0
|
If you go to http://news.bbc.co.uk/1/hi/technology/7041183.stm it seems that SETI will be running it, so we might be able to get our machines on all that lovely data. Once again, SATAN, *THIS* project (SETI@home) is not involved with the ATA. There are many different SETI projects. SETI@home is only one of them. To the best of my knowledge, SETI@home is the ONLY 'seti' project using distributed computing to help analyze signals -- the others use more traditional methods for analysis (their own computers, and possibly buying time on various supercomputers), so don't count on being able to 'crunch' any other seti-data. Unless something changes, SETI@home will not see one 'bit' from the ATA. SETI@home began as a piggyback off of part of the signal obtained by another 'seti' project (iirc, SERENDIP IV), which itself piggybacked off of part of the signal received by one particular receiver at Arecibo. While efforts have been made in the past to gain access to other receivers at other radiotelescopes (such as the Parkes 'scope), they have fallen through for, as I understand it, two main reasons: politics within the scientific community, and lack of funding. When Arecibo goes dark (or is extremely cut back in operations) in 2010 (as seems very likely -- the NSF wishes to spend the Arecibo budget on other instruments with, in their eyes, more scientific potential), it is a distinct possibility that SETI@home would run out of data to 'crunch'. Unless, that is, we can recrunch old data with different programs, such as the Astropulse app currently in beta-testing. Who knows if the SETI@home project can gain access at some point in the future to another radio-telescope feed? I wouldn't hold my breath. Money is always the key. Other scientific projects out there are seen by many as being more worthy of money. 'Many' includes Government, Corporate, Academic, and private interests. Unless SETI@home can gain new Government grants, Academic interest, and Corporate and individual donations, its future is very uncertain. If not, well... If SETI@home ends after Arecibo, it has been a good run. After all, SETI@home was originally only supposed to last from May 1999 to May 2001 (2 years), and here we are here we are 6 1/2 years after its original endpoint, for a total run length of 11+ years if Arecibo closes as scheduled in 2010. The original plans were for about 100000 participants total (and about 10000 active). We have greatly surpassed those goals. SETI@home ran out of funding years ago, and has subsisted on private donations of money and some Corporate donations of equipment. Regardless of if/when it shuts down, participation in the SETI@home project is something to be proud of. After all, it is one of the 'big 3' projects that popularized distributed computing, alongside that RSA crypto-key cracking project (now defunct, was run by d-net), and that protein folding project (folding@home). Together, we have accomplished mighty deeds. And the BOINC outgrowth of the SETI@home project has made it vastly easier for projects to enter the distributed computing arena on a virtually non-existent, shoestring budget. Even *IF* we never find an ETI, we have still helped to change the world and make it a better place. Who knows what other distributed computing projects out there might find? A cure for a deadly disease? A new wonder drug? An enhanced understanding of the universe? All these things WE helped to make possible. You want SETI@home to survive much past 2010? Its gonna take Government Grants to negotiate access to a new feed, and buy/build the equipment needed to connect to it, so start lobbying your governments now. Personal donations, if possible, are important as well... they help defray operating costs. https://youtu.be/iY57ErBkFFE #Texit Don't blame me, I voted for Johnson(L) in 2016. Truth is dangerous... especially when it challenges those in power. |
SATAN 发送消息 已加入:27 Aug 06 贴子:835 积分:2,129,006 近期平均积分:0
|
If you go to http://news.bbc.co.uk/1/hi/technology/7041183.stm it seems that SETI will be running it, so we might be able to get our machines on all that lovely data. |
Pappa 发送消息 已加入:9 Jan 00 贴子:2562 积分:12,301,681 近期平均积分:0
|
DJHill The answer is you have to do nothing. The information Eric gave previously still stands. The News Sources have been dropping the word Institue out of Seti Institue thus it gives the appearance that Seti@home is involved. The response to my question provided a link to a document (already read) that didn't answer the question. That post was locked so I couldn't follow up there. Please consider a Donation to the Seti Project. |
Andy Lee Robinson 发送消息 已加入:8 Dec 05 贴子:630 积分:59,973,836 近期平均积分:0
|
We crunch data. How and where that data comes from seems to me to be irrelevent, unless there is some form of contract. If we get hold of the Allen data, then I think we would have an easier time of processing the data with more stable and predictable angle ranges. (Actually the poles wouldn't be bad places for a SETI telescope, wouldn't have to compensate for the doppler shift of the Earth's rotation, just its orbit). |
|
HTH 发送消息 已加入:8 Jul 00 贴子:690 积分:909,237 近期平均积分:0
|
Yes, but it could be dead in 2010(?). SKA is ready perhaps 2020, so we would have to be at least 10 years without SETI@home... Manned mission to Mars in 2019 Petition <-- Sign this, please. |
kittyman ![]() 发送消息 已加入:9 Jul 00 贴子:50498 积分:1,018,363,574 近期平均积分:1,004
|
Eric answered this question many months ago for me. The Allen Array project is a totally seperate project and will not have any impact on Seti@Home. Then again if something has changed since then, Eric will know. I don't think Arecibo is dead yet..... "Learn from yesterday. Live for today. Hope for tomorrow." Albert Einstein "With cats." kittyman
|
|
HTH 发送消息 已加入:8 Jul 00 贴子:690 积分:909,237 近期平均积分:0
|
Eric answered this question many months ago for me. The Allen Array project is a totally seperate project and will not have any impact on Seti@Home. Then again if something has changed since then, Eric will know. Oh boy! ;( They are also going to shut down Arecibo in the near future, so goodbye SETI@home. :( Manned mission to Mars in 2019 Petition <-- Sign this, please. |
Geek@Play 发送消息 已加入:31 Jul 01 贴子:2467 积分:86,146,931 近期平均积分:0
|
Eric answered this question many months ago for me. The Allen Array project is a totally seperate project and will not have any impact on Seti@Home. Then again if something has changed since then, Eric will know. |
|
Astro 发送消息 已加入:16 Apr 02 贴子:8026 积分:600,015 近期平均积分:0 |
Freudian slip? ;-) I don't think he wears one (mighty comfy things though), but don't ask about his son in law... |
|
aka_Sam 发送消息 已加入:1 Aug 07 贴子:471 积分:1,637,878 近期平均积分:0
|
Sorry for the confusion. Eric has been asked for a definative answer. It will show up in the Staff Blog... Freudian slip? ;-) |
Pappa 发送消息 已加入:9 Jan 00 贴子:2562 积分:12,301,681 近期平均积分:0
|
Sorry for the confusion. Eric has been asked for a definative answer. It will show up in the Staff Blog... Please be patient Regards Pappa Edit: Starting in Novemeber the new donation push to keep Seti Alive is in the planning stages. Many of your efforts to this point have been greatly appreciated. Please consider a Donation to the Seti Project. |
©2020 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.