Posts by Mr. Kevvy


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41) Message boards : Cafe SETI : Say E.T. lands, does SETI go on? (Message 1647325)
Posted 27 Feb 2015 by Profile Mr. KevvyProject donor
It depends on what the results of the first contact are. If we can communicate, being interstellar travelers we could just ask them where other inhabited worlds are. But if they didn't know then I don't doubt we would keep looking, and at a much greater scale than privately-funded projects running on a shoestring budget.

If we just found a confirmed signal the same effect would happen with SETI getting vastly more funding and resources, so I don't think we'd have to keep crunching. That would be enough of a world-changer.
42) Message boards : SETI@home Staff Blog : What does loss of net neutrality mean for volunteer computing? (Message 1646429)
Posted 25 Feb 2015 by Profile Mr. KevvyProject donor
The peanut gallery is affirmed... F.C.C. Net Neutrality Rules Clear Hurdle and net neutrality is on its way to being enforced by the F.C.C.

Senior Republicans conceded on Tuesday that the grueling fight with President Obama over the regulation of Internet service appears over, with the president and an army of Internet activists victorious.

The Federal Communications Commission is expected on Thursday to approve regulating Internet service like a public utility, prohibiting companies from paying for faster lanes on the Internet. While the two Democratic commissioners are negotiating over technical details, they are widely expected to side with the Democratic chairman, Tom Wheeler, against the two Republican commissioners.
43) Message boards : Number crunching : Panic Mode On (95) Server Problems? (Message 1646151)
Posted 25 Feb 2015 by Profile Mr. KevvyProject donor
Out of work; RAC falls,
Crunchers idle: can't connect.
Damn, I hate Tuesdays...

//Haiku! Gesundheit.
44) Message boards : Cafe SETI : I lost a bet....part II....the rest of the story. (Message 1646008)
Posted 24 Feb 2015 by Profile Mr. KevvyProject donor
Now that it's no longer Monday anywhere on Earth: I'm quite surprised and happy to have lost this bet.

You gave $100.00
to SETI@home
on February 24, 2015
via Visa
Your confirmation number is 151750
45) Message boards : Cafe SETI : I lost a bet....part II....the rest of the story. (Message 1645351)
Posted 22 Feb 2015 by Profile Mr. KevvyProject donor
What did stay my hand last night was that Mark appeared to listen to my warning.


Good... there is still hope then.

Edit: As per the latest addition to the thread, I'm editing out the rest and will say nothing more until Monday.
46) Message boards : Science (non-SETI) : Question for astronomers (Message 1645108)
Posted 21 Feb 2015 by Profile Mr. KevvyProject donor
Artificial gravity is not the same force as gravity.


Actually in G.R. the Equivalence principle shows the two as the same, with the caveat that it holds true for point-sized samples. (You can tell if your local "gravity" is due to "upwards" acceleration through space or acceleration due to gravity by whether it has tidal falloff by the square of the distance from the hypothesized other mass.)

This equivalence is strong enough that it was used by Einstein to deduce the bending of light rays by gravitational fields. The equivalency is that a beam of light traveling across a room accelerating "upwards" will curve "downwards", so the exact same curve should appear under acceleration due to gravity. That it did was yet another confirmation of G.R.
47) Message boards : Number crunching : Superfish (Message 1644943)
Posted 21 Feb 2015 by Profile Mr. KevvyProject donor
For anyone with a Lenovo, they have posted an automated uninstaller to get rid of Superfish.

Of course, just in case you are justifiably dubious running it given that it was also developed by Lenovo, there are manual uninstall directions there too. :^)

U.S. Department of Homeland Security alert on Superfish. This is worth a read as you should also uninstall "Komodo redirector" if present.
48) Message boards : Cafe SETI : I lost a bet....part II....the rest of the story. (Message 1644559)
Posted 20 Feb 2015 by Profile Mr. KevvyProject donor
I pledge a donation of $100 to SETI@Home on Monday 2015-Feb.-23 if, and only if, userID 421968 is able to post to these forums under the name "msattler" on that date. So, his choice.

(Edit: Just so it isn't misinterpreted, I'm offering an incentive to Mark to stay within the guidelines... not bribing the moderators to not enforce them! Yes, I know it's obvious to most.)
49) Message boards : SETI@home Science : ET, is that you? Scientists launch plan to beam welcome messages to far-off star systems (Message 1644243)
Posted 19 Feb 2015 by Profile Mr. KevvyProject donor
The whales are much smarter than humans.


"For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much — the wheel, New York, wars and so on — whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man — for precisely the same reasons."

--- Douglas Adams
50) Message boards : Number crunching : Panic Mode On (95) Server Problems? (Message 1643534)
Posted 18 Feb 2015 by Profile Mr. KevvyProject donor
Oh for the old days when things ran well after an outrage. ;-)


Ran out hours ago... guess I go begging some Einstein work. This is becoming a regular Tuesday occurrence.
51) Message boards : Science (non-SETI) : Question for astronomers (Message 1643458)
Posted 17 Feb 2015 by Profile Mr. KevvyProject donor
"Yes", if by "display any motion" you mean that photographs over time within the range of a human lifetime will show that they moved.

"No" if you meant you'll see them move by looking at them, unless you can look at them without averting your eyes or sleeping for a year or so. :^)
The fastest, Barnard's Star, has this note: "The 10.3 seconds of arc it travels annually amounts to a quarter of a degree in a human lifetime, roughly half the angular diameter of the full Moon."

Caveat: I am not astronomer, nor do I play one on TV.
52) Message boards : Cafe SETI : Let me ask a bold question........... (Message 1641872)
Posted 14 Feb 2015 by Profile Mr. KevvyProject donor
One of the reasons I've stuck with this apartment for so long is that I don't pay for utilities. One rent bill covers heat, hot water and of course electricity. I'm only using about $100 a month worth of it for crunching so it's not like I'm bankrupting the property managers (also don't need the heat from the radiators as the computers take care of that)... slightly less than a tenth of the rent. There are still plenty of apartments like this, and if this one ever goes to metering, I will be moving immediately.
53) Message boards : Number crunching : near vlar? (AR 0.01) super slow on NVIDIA gtx 780 (Message 1641860)
Posted 14 Feb 2015 by Profile Mr. KevvyProject donor
I wondered why my whole computer was running like a bag of goo since yesterday. VLAR CUDA work units not only were taking 1.5 hours to complete, but the system was unusably slow with a screen updates, even as simple as scrolling browser window, hanging... watching any video was a hopeless mass of chunky pixel artifacts. CPU usage which usually is rock-steady at 99.5%-100% with a flat ceiling was spiky/choppy and below 90%. They really brick the whole works, so I aborted the lot of them.
54) Message boards : Number crunching : New system many invalids and errors (Message 1641292)
Posted 13 Feb 2015 by Profile Mr. KevvyProject donor
Here is you on BOINCStats which shows your actual daily production not just RAC which is averaged. Daily. prod. there total is 21,283 which is >100 GFlOps... this is more reasonable.
55) Message boards : Number crunching : New system many invalids and errors (Message 1641282)
Posted 13 Feb 2015 by Profile Mr. KevvyProject donor
The "Cobblestone": One GFlOp running 24x7 will earn 200 credits per day. Your current RAC at the present is exactly 2,000 = 10 GFlOps.

Just to show how far computing has come, when I was a young'un in the 1980's the ultimate supercomputer was the Cray X-MP, worth about $15 million at the time. It does 400 MFlOps, so if you put it to work on a BOINC project it would have a rather underwhelming RAC of.... 80.
56) Message boards : Number crunching : New system many invalids and errors (Message 1641273)
Posted 13 Feb 2015 by Profile Mr. KevvyProject donor
a bit over 5 teraflops per GPU???


Egads... 5 teraflops would result in a RAC of one million. I think that may be a tad overstated. ;^)
57) Message boards : Science (non-SETI) : The computer that crunches cloud data to heat your home (Message 1640696)
Posted 12 Feb 2015 by Profile Mr. KevvyProject donor
I've been doing this for years... turned off all the radiators in our apartment and it's been heated by computers ever since. Not pleasant in the summer though. :^)
58) Message boards : Number crunching : >1 Task per CPU? (Ans: Probably Not) (Message 1639610)
Posted 10 Feb 2015 by Profile Mr. KevvyProject donor
How did you measure % utilization on the GPU?


EVGA Precision. Essential in the cruncher toolkit. :^)
59) Message boards : Number crunching : >1 Task per CPU? (Ans: Probably Not) (Message 1639606)
Posted 10 Feb 2015 by Profile Mr. KevvyProject donor
However doing so will likely have little to no gains. More than likely it would just result in less work done in a given time if gone to far. Much like I suspect is likely happening with the iGPU running 5 tasks at once.


This is pretty much it. CPUs run BOINC code natively so are always very close to 100% utilization; there's no need to run >1 instance per core.

Conversely, GPUs have to be loaded with work by the CPU; you can see these helper processes feeding work to the GPU in Task Manager->Processes when you have BOINC GPU work running. If they aren't allocated enough due to the CPU core running the process not getting enough timeslices, being too slow, or due to bus overloading, the GPU will run at less than 100% utilization. In this case, running >1 instance per GPU does have significant gains. When I got my first 980, I tested it. With 0.4 cores reserved per GPU thread, I found with 1 instance on the GPU there was 45-55% utilization, with 2 was 70-75% and 3 is 95-100%. So I stuck with 3. Anything more than this is just going to slow it down and waste memory, as the GPU is always maxed out and then other factors such as bus oversaturation can occur. If someone has a slow CPU and a fast GPU, 5 instances could actually be worthwhile, if 4 are tested to be consistently and significantly less than 100% utilization, but this would usually be unlikely.
60) Message boards : SETI@home Science : ET, is that you? Scientists launch plan to beam welcome messages to far-off star systems (Message 1639573)
Posted 10 Feb 2015 by Profile Mr. KevvyProject donor
A statement on this just went on the main page with an associated thread. I recognize three of the signatories are from this project (Andrew P. V. Siemion, Eric J. Korpela, Dan Werthimer).


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