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Message boards : Number crunching : PrimeGrid's Birthday Challenge!

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[DPC]Charley

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Message 85931 - Posted: 6 Jun 2015 | 22:01:07 UTC

PrimeGrid birthday Challenge

PrimeGrid has been around for quite a while and that's worth a celebration! We're throwing a 3 day party from June 12th 18:00:00 UTC until June 15th 18:00:00 UTC on the SoB/PSP/ESP Sieve subproject. To participate in the Challenge, please select only the SoB/PSP/ESP Sieve in your PrimeGrid preferences section.

Waclaw Franciszek Sierpinski (14 March 1882 - 21 October 1969), a Polish mathematician, was known for outstanding contributions to set theory, number theory, theory of functions and topology. It is in number theory where we find the Sierpinski problem.

Basically, the Sierpinski problem is "What is the smallest Sierpinski number" and the prime Sierpinski problem is "What is the smallest 'prime' Sierpinski number?"

First we look at Proth numbers (named after the French mathematician François Proth). A Proth number is a number of the form k*2^n+1 where k is odd, n is a positive integer, and 2^n>k.

A Sierpinski number is an odd k such that the Proth number k*2^n+1 is not prime for all n. For example, 3 is not a Sierpinski number because n=2 produces a prime number (3*2^2+1=13). In 1962, John Selfridge proved that 78,557 is a Sierpinski number...meaning he showed that for all n, 78557*2^n+1 was not prime.

Most number theorists believe that 78,557 is the smallest Sierpinski number, but it hasn't yet been proven. In order to prove it, it has to be shown that every single k less than 78,557 is not a Sierpinski number, and to do that, some n must be found that makes k*2^n+1 prime.

The smallest proven 'prime' Sierpinski number is 271,129. In order to prove it, it has to be shown that every single 'prime' k less than 271,129 is not a Sierpinski number, and to do that, some n must be found that makes k*2^n+1 prime.

The World Clock - Time Zone Converter
NOTE: The countdown clock on the front page uses the host computer time. Therefore, if your computer time is off, so will the countdown clock. For precise timing, use the UTC Time in the data section to the left of the countdown clock.

What is sieving?

Sieving is the first step to prime finding. In general, a sieve separates wanted/desired elements from unwanted material using a tool such as a mesh, net or other filtration or distillation methods. The word "sift" derives from this term. (Wikipedia - Sieve)

In PrimeGrid's case, the desired elements ultimately are prime numbers and the unwanted material are composite numbers. Our tool of choice for PSP/SoB sieve is Geoff Reynolds' sr2sieve program. It eliminates possible candidates by removing numbers that have small factors. As this process is much faster than primality testing, it is good to thoroughly sieve a data set before primality testing.

Sieving removes many candidates at the beginning. However, the deeper the sieve goes, the slower the rate of removal, till eventually sieving removes candidates at the same rate as primality testing. This is sometimes referred to as "optimal depth". Primality testing is recommended at this point.

There are many factors that determine how much time and how deep to sieve. After sieving, all the remaining candidates must be primality tested to determine their "prime" status.

32 bit OS with 64 bit CPU

This is for those who are "driving with the hand brake active" (running a 32 bit OS on a 64 bit machine) ;) Wubi is a very nice tool that installs Ubuntu as a dual boot to your 64 bit machine. It's as simple as adding a program to Windows. You can even uninstall it like you would any other program. :)

Wubi - Ubuntu Installer

After getting 64 bit OS running on your machine, here's a link to ALL BOINC clients (including Linux x64): http://boinc.berkeley.edu/download_all.php If you are new to Linux and need help getting set up, let us know.

It really is simple. :) With that said, check what installations WUBI will NOT work on: Unsupported set-ups

Scoring Information

Scores will be kept for individuals and teams. Only work units issued AFTER 12 June 2015 18:00 UTC and received BEFORE 15 June 2015 18:00 UTC will be considered for credit. Since this is a fixed credit project, we'll be using BOINC credit for scoring. A quorum of 2 is NOT needed to award Challenge score - i.e. no double checker. Therefore, each returned result will earn a Challenge score. Please note that if the result is eventually declared invalid, the score will be removed.

At the Conclusion of the Challenge

ABORTING WU's allows them to be recycled immediately; thus a much faster "clean up" to the end of an LLR Challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed.

Please consider either completing what's in the queue or ABORTING them. Thank you. :)

[/list]Strategies for starting the Challenge

Depending on a variety of factors, different strategies work for different users. Here are just a few to consider:

• large farm, user can be present at start
-Set Computer is connected to the Internet about every to 0 days
-Set Maintain enough work for an additional to 0 days
-Change PrimeGrid preferences to a fast WU project such as PPSE (LLR)
-At Challenge start, update PrimeGrid preferences and only select the ESP/PSP/SoB sieve project
-At worse, you'll only be 1 PPSE (LLR) WU late on each core starting the Challenge.
-After all machines have work, increase Maintain enough work for an additional buffer
• large farm, user NOT able to be present at start
-Same connection settings as above
-At earliest access to hosts after start, switch to theESP/PSP/SoB sieve project
• a few computers, user can be present at start
-Change PrimeGrid preferences and only select the ESP/PSP/SoB sieve project
-Set computers to "No New Tasks" for PrimeGrid
-At Challenge Start, update computers to "Allow New Tasks"
• a few computers, user NOT able to be present at start
-same settings as "large farm, user NOT able to be present at start"

NOTE: This presumes you have all other BOINC projects suspended.

At the Conclusion of the Challenge

We kindly ask users "moving on" to ABORT their WU's instead of DETACHING, RESETTING, or PAUSING.

ABORTING WU's alows them to be recycled immediately; thus a much faster "clean up" to the end of a challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed.

Please consider either completing what's in the queue or ABORTING them. Thank you. :)

____________
PrimeGrid Challenge Overall standings --- Last update: From Pi to Paddy (2016)

Roger
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Message 85934 - Posted: 6 Jun 2015 | 23:49:47 UTC

I found the first ever post on the Message Boards:
That would make Primegrid coming up on 10 years old.
Happy Birthday Primegrid!

Anthony Ayiomamitis

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Message 85935 - Posted: 7 Jun 2015 | 1:05:36 UTC - in response to Message 85934.

Also bad dates are referenced. See references to Aug/2014 and which should be June/2015.

~~~(,__,)^'>
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Message 85952 - Posted: 8 Jun 2015 | 12:57:09 UTC

Aggie The Pew are tooling up for this.

There is still time to be like a rat from a sinking ship and join us.
____________
Oh Bondage? Up Yours.

Anthony Ayiomamitis

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Message 85961 - Posted: 8 Jun 2015 | 21:07:38 UTC

My preferences for PPS Sieve indicate "Nvidia GPU (CUDA) (disabled)". Is this related to the upcoming challenge and, if so, is it not quite early and premature? I was hoping to hit a MILLION credits for this subproject over the next 24 hrs!

JimB
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Message 85963 - Posted: 8 Jun 2015 | 21:31:17 UTC - in response to Message 85961.

My preferences for PPS Sieve indicate "Nvidia GPU (CUDA) (disabled)". Is this related to the upcoming challenge and, if so, is it not quite early and premature? I was hoping to hit a MILLION credits for this subproject over the next 24 hrs!

No, it's marked as disabled because you did not check the box near the top of the page labelled "Use nVidia GPU".

Anthony Ayiomamitis

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Message 85965 - Posted: 8 Jun 2015 | 21:43:38 UTC - in response to Message 85963.

Thanks, Jim!

Brook Harste

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Message 85968 - Posted: 8 Jun 2015 | 23:32:04 UTC - in response to Message 85961.

Dont know if this matters to you or not but..."Only work units issued AFTER 12 June 2015 18:00 UTC and received BEFORE 15 June 2015 18:00 UTC will be considered for credit"
____________

Wingless Wonder

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Message 85969 - Posted: 8 Jun 2015 | 23:45:34 UTC - in response to Message 85968.

Dont know if this matters to you or not but..."Only work units issued AFTER 12 June 2015 18:00 UTC and received BEFORE 15 June 2015 18:00 UTC will be considered for credit"

I think he wants PPS Sieve (CUDA) for his gpu during the time of the Challenge and trying to grab a bunch before the challenge begins in case of a server restriction on task downloads in the beginning.

Michael Goetz
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Message 85970 - Posted: 8 Jun 2015 | 23:46:23 UTC - in response to Message 85968.

Dont know if this matters to you or not but..."Only work units issued AFTER 12 June 2015 18:00 UTC and received BEFORE 15 June 2015 18:00 UTC will be considered for credit"

The challenge is for the SoB-PSP-ESP sieve. He's asking about the PPS-Sieve. Presumably, he realizes that they are NOT the same project! PPS-Sieve tasks won't count at all for the challenge.
____________
My lucky number is 75898524288+1

Michael Goetz
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Message 85971 - Posted: 8 Jun 2015 | 23:48:06 UTC - in response to Message 85961.

Fear not, we learned out lesson and won't be doing that again.
____________
My lucky number is 75898524288+1

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Message 85976 - Posted: 9 Jun 2015 | 3:39:52 UTC

Just curious.
According to the subproject status. http://www.primegrid.com/stats_psp_sieve.php We are running 33-34P and 34-35P. Is it known how far out we will be sieving till "optimal depth", and is there an estimate for how long it will take at current rates?
cheers
waffle

Michael Goetz
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Message 85977 - Posted: 9 Jun 2015 | 5:18:39 UTC - in response to Message 85976.

Just curious.
According to the subproject status. http://www.primegrid.com/stats_psp_sieve.php We are running 33-34P and 34-35P. Is it known how far out we will be sieving till "optimal depth", and is there an estimate for how long it will take at current rates?
cheers
waffle

According to this post from a year ago when we started sieving, the optimal sieving depth for candidates at n=10M is between 5P and 10P. We've sieved passed there, which is good since I wouldn't be surprised if we start LLR on candidates above n=10m within a year or two.

We're sieving up to n=50M, and the optimal depth for n=50M is of course much larger and is somewhere between 163P and 327P. At the current pace, that's about 5 to 10 years of sieving.
____________
My lucky number is 75898524288+1

Anthony Ayiomamitis

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Message 85978 - Posted: 9 Jun 2015 | 8:53:35 UTC - in response to Message 85970.

Michael, for some reason I am having problems getting PPS-Sieve CUDA units. Any suggestions?

Michael Goetz
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Message 85979 - Posted: 9 Jun 2015 | 12:30:23 UTC - in response to Message 85978.

Michael, for some reason I am having problems getting PPS-Sieve CUDA units. Any suggestions?

I've answered you by PM, but I'd like to remind everyone to keep this (and other threads) on-topic. Please don't start asking completely unrelated questions. Thank you!

Also, I personally am far less involved with PrimeGrid than I used to be, so I am definitely NOT the person to be asking for help anymore. I don't have the time. Asking me questions (by name) or via PM runs the risk of getting no response at all, since I may not have the time to respond and other people probably won't respond to something directed specifically to someone else.

(One of the things I'm NOT doing anymore -- or at least doing a lot less -- is answering forum or PM questions. It's too time consuming.)
____________
My lucky number is 75898524288+1

Gary Craig
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Message 86007 - Posted: 10 Jun 2015 | 3:33:09 UTC

Yes, to echo one point that MG made in the last post... and especially for newcomers... "PSP Sieve" and "PPS Sieve" are *totally* separate projects. "PSP Sieve" (currently styled as "The Sierpinski Problem ESP/PSP/SoB Sieve (ESP-Sieve)" on the Preferences page) is the *only* subproject that will count for Challenge credit. All other work (including PPS sieve, which almost everyone runs on GPU) will continue to earn normal BOINC credit as usual, just not "challenge" credit. GPUs will not contribute toward this challenge scoring, as there is no application built for this problem for them.

--Gary

Anthony Ayiomamitis

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Message 86015 - Posted: 10 Jun 2015 | 12:14:33 UTC - in response to Message 86007.

Gents,

I am fully aware of the difference and I thank you for the reminder and reinforcement. The overwhelming majority of my brief work here on PG has involved these two subprojects and I know them like the back of my hand.

Miklos M.

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Message 86065 - Posted: 11 Jun 2015 | 16:28:35 UTC

Just a quick question as far as the challenge goes, please. I do not have to empty my que of all tasks prior to the start of the contest, but only the ones that will be part of this contest? Ie: ESP/PSP/SoB sieve project

[DPC]Charley

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Message 86067 - Posted: 11 Jun 2015 | 16:37:12 UTC

Yes, you can leave other units in your queue. Do remember though that you will not get any new work if you have any primegrid tasks suspended.
____________
PrimeGrid Challenge Overall standings --- Last update: From Pi to Paddy (2016)

Dave

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Message 86092 - Posted: 12 Jun 2015 | 9:13:46 UTC

* Happy Birthday PG *

Miklos M.

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Message 86094 - Posted: 12 Jun 2015 | 14:08:34 UTC

Let the Games begin...soon.

Warped

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Message 86104 - Posted: 12 Jun 2015 | 18:00:57 UTC - in response to Message 86094.

Let the Games begin...soon.

____________
Warped

Rafael
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Message 86105 - Posted: 12 Jun 2015 | 18:02:51 UTC

Yay, let the fun begin!

Dave

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Message 86106 - Posted: 12 Jun 2015 | 18:06:49 UTC

I am 31 secs late on one machine & another got an SGS at 18:58. Could do better.

Miklos M.

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Message 86109 - Posted: 12 Jun 2015 | 18:10:08 UTC - in response to Message 86106.

I need my two kitties to help out and hit the right buttons just on time. Perhaps I can teach them by the next challenge, lol.

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Message 86112 - Posted: 12 Jun 2015 | 18:16:38 UTC

where statistics?!

Chris Skull

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Message 86118 - Posted: 12 Jun 2015 | 19:04:08 UTC

something went wrong... one machine only compute errors... other machine runns 5-6 tasks in a time at a quadcore... ?
____________
Greetz
Chris

561*2^1423021+1

Chris Skull

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Message 86119 - Posted: 12 Jun 2015 | 19:09:00 UTC

tasks with compute errors run further (process) !!!
____________
Greetz
Chris

561*2^1423021+1

Rafael
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Message 86120 - Posted: 12 Jun 2015 | 19:18:28 UTC

Only 1h and 20min in, and task count already dropped by half. And, there's a guy with 46k Credits....

The hell is he running!? NASA's PCs!?!? Sigh... so long as I can keep myself in top 100, I guess I won't feel THAT depressed............

Michael Goetz
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Message 86123 - Posted: 12 Jun 2015 | 19:42:47 UTC - in response to Message 86120.

Only 1h and 20min in, and task count already dropped by half.

That's got nothing to do with how much work was done. The drop in the number of available tasks was due to my lowering the queue size after the start of the challenge. We no longer need 50 thousand tasks waiting to be sent out. 25 thousand is enough now.

And, there's a guy with 46k Credits....

The hell is he running!? NASA's PCs!?!? Sigh... so long as I can keep myself in top 100, I guess I won't feel THAT depressed............

NASA doesn't make computers -- and the computers that they use tend to be rather outdated. "Latest and greatest" doesn't cut it when what you want is reliability. When you're sticking a computer inside a multi-billion dollar space probe, you want to use something that has a LONG history of reliability. NASA's not the best place to look for high tech computing. Your average gamer, on the other hand... :)

The people with high scores in the challenges don't necessarily have super-fast computers, or very expensive computers, or very sophisticated computers.

What they have is a LOT of computers.
____________
My lucky number is 75898524288+1

Rafael
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Message 86124 - Posted: 12 Jun 2015 | 19:58:44 UTC - in response to Message 86123.

Only 1h and 20min in, and task count already dropped by half.

That's got nothing to do with how much work was done. The drop in the number of available tasks was due to my lowering the queue size after the start of the challenge. We no longer need 50 thousand tasks waiting to be sent out. 25 thousand is enough now.

And, there's a guy with 46k Credits....

The hell is he running!? NASA's PCs!?!? Sigh... so long as I can keep myself in top 100, I guess I won't feel THAT depressed............

NASA doesn't make computers -- and the computers that they use tend to be rather outdated. "Latest and greatest" doesn't cut it when what you want is reliability. When you're sticking a computer inside a multi-billion dollar space probe, you want to use something that has a LONG history of reliability. NASA's not the best place to look for high tech computing. Your average gamer, on the other hand... :)

The people with high scores in the challenges don't necessarily have super-fast computers, or very expensive computers, or very sophisticated computers.

What they have is a LOT of computers.

Ye, I know. It was just an expression..

Still, one has to wonder where do people get all of those computers.... the places I go to were rather... uncooperative, when I requested to use their PCs.

Pooh Bear 27

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Message 86125 - Posted: 12 Jun 2015 | 20:23:27 UTC - in response to Message 86124.

Still, one has to wonder where do people get all of those computers.... the places I go to were rather... uncooperative, when I requested to use their PCs.

Some people are now using cloud computing. Tons of cores at your disposal without owning the physical device.

Michael Goetz
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Message 86126 - Posted: 12 Jun 2015 | 20:27:09 UTC - in response to Message 86124.

Still, one has to wonder where do people get all of those computers.... the places I go to were rather... uncooperative, when I requested to use their PCs.

Usually the computers belong to the user's employer and (hopefully) are used with permission. Some people simply have a garage or basement filled with computers. And I know at least one person has rented AWS computers in the past and was able to harness thousands of computer cores and GPUs on demand.
____________
My lucky number is 75898524288+1

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Message 86143 - Posted: 13 Jun 2015 | 11:36:11 UTC

And in the mean time my three wittle ones keep chugging along, lol. Push them kitties, push them.

Michael Goetz
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Message 86159 - Posted: 13 Jun 2015 | 19:26:14 UTC

After one day:

Challenge: PrimeGrid Birthday
App: 6 (SOB/PSP/ESP-Sieve)
(As of 2015-06-13 18:44:06 UTC)

497637 tasks have been sent out. [CPU/GPU/anonymous_platform: 497637 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

6246 (1%) came back with some kind of an error. [6246 (1%) / 0 (0%) / 0 (0%)]
274049 (55%) have returned a successful result. [274057 (55%) / 0 (0%) / 0 (0%)]
217484 (44%) are still in progress. [217477 (44%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

111594 (41%) are pending validation. [111602 (41%) / 0 (0%) / 0 (0%)]
162455 (59%) have been successfully validated. [162455 (59%) / 0 (0%) / 0 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]

____________
My lucky number is 75898524288+1

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Message 86185 - Posted: 14 Jun 2015 | 12:17:11 UTC

The first and main thing from my side:

~Happy birthday PrimeGrid~

:)

The second thing is a question; Does someone recognized the many users with nick build of a 'ce', followed by a number? Any ideas, what happened there?

The increasing of these ce-Users are such with..... no name.... O.o

greetz, gazer :)

~~~(,__,)^'>
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Message 86186 - Posted: 14 Jun 2015 | 12:23:37 UTC - in response to Message 86185.

The first and main thing from my side:

~Happy birthday PrimeGrid~

:)

The second thing is a question; Does someone recognized the many users with nick build of a 'ce', followed by a number? Any ideas, what happened there?

The increasing of these ce-Users are such with..... no name.... O.o

greetz, gazer :)

First from me is greetings to SETI Germany from AtP!

Secondly in addition to 'gazer's excellent question what about the users with no name and no team. How does that work?

____________
Oh Bondage? Up Yours.

Stargazer-SG

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Message 86189 - Posted: 14 Jun 2015 | 14:12:04 UTC - in response to Message 86186.

First from me is greetings to SETI Germany from AtP!

Secondly in addition to 'gazer's excellent question what about the users with no name and no team. How does that work?

Heyo :)

- and thanks that u 'translated' the quest. ^^
My english is just good enough to ask for the next McDonalds. :D

Only guess: maybe.. the nicknames use some characters, boinc or the database of PG can't handle?

~~~(,__,)^'>
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Message 86196 - Posted: 14 Jun 2015 | 15:39:22 UTC - in response to Message 86189.

- and thanks that u 'translated' the quest. ^^
My english is just good enough to ask for the next McDonalds. :D

Only guess: maybe.. the nicknames use some characters, boinc or the database of PG can't handle?

You do yourself a serious injustice. I thought your question was perfectly clearly put (and it is way better than my German) I'd been wondering the same thing too.

As for my question maybe you are right with your answer but PG copes with my username.

Incidentally we rats are enjoying our contest with you people. It is fun when it is a close run thing.

____________
Oh Bondage? Up Yours.

Stargazer-SG

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Message 86198 - Posted: 14 Jun 2015 | 15:59:53 UTC - in response to Message 86196.

Incidentally we rats are enjoying our contest with you people. It is fun when it is a close run thing.

If u like it more closer, than your mates has to deactivate some cores; or better: spend Seti.Germany some CPU-time. :D

I think, your team is more involved in PG-challenges (or has just more 'highrollers') than we do. Pity, but at least its everyones own electricity bill.

Back to the 'no-namers'; Your nick (as example) has the normal standard-set of characters as the most char-sets should know: '<>~ and so on. Maybe some (don't know) chinese or thai-PG-member has some really, really special characters? I'm not that professional; but not all characters are part of ascii or at least interpretable sort of Fonts, the chinese/thai and so on may use ?!?

Terminator

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Message 86212 - Posted: 14 Jun 2015 | 20:26:16 UTC

Happy Birthday PrimeGrid.

Greatings to all: Terminator

gazzyk1ns

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Message 86217 - Posted: 14 Jun 2015 | 21:57:38 UTC - in response to Message 86189.

- and thanks that u 'translated' the quest. ^^
My english is just good enough to ask for the next McDonalds. :D

Would you like fries with that?

:friendly winky:

Stargazer-SG

Joined: 28 Apr 09
Posts: 20
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Message 86218 - Posted: 14 Jun 2015 | 22:24:10 UTC - in response to Message 86217.

- and thanks that u 'translated' the quest. ^^
My english is just good enough to ask for the next McDonalds. :D

Would you like fries with that?

:friendly winky:

With or without ketchup? :)

As long, as you won't come with fish'n'chips O.o :D

And now; Have a good night. :)

Michael Goetz
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Message 86219 - Posted: 14 Jun 2015 | 22:44:08 UTC

After two days:

Challenge: PrimeGrid Birthday
App: 6 (SOB/PSP/ESP-Sieve)
(As of 2015-06-14 18:28:25 UTC)

841861 tasks have been sent out. [CPU/GPU/anonymous_platform: 841781 (100%) / 0 (0%) / 80 (0%)]

Of those tasks that have been sent out:

24972 (3%) came back with some kind of an error. [24972 (3%) / 0 (0%) / 0 (0%)]
581368 (69%) have returned a successful result. [581665 (69%) / 0 (0%) / 72 (0%)]
235794 (28%) are still in progress. [235682 (28%) / 0 (0%) / 8 (0%)]

Of the tasks that have been returned successfully:

148330 (26%) are pending validation. [148434 (26%) / 0 (0%) / 33 (0%)]
433038 (74%) have been successfully validated. [433231 (75%) / 0 (0%) / 39 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]
____________
My lucky number is 75898524288+1

Michael Goetz
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Message 86225 - Posted: 15 Jun 2015 | 12:17:27 UTC

With about six hours to go, it's time for the usual end of challenge reminder:

At the Conclusion of the Challenge

ABORTING WU's allows them to be recycled immediately; thus a much faster "clean up" to the end of a Challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed.
____________
My lucky number is 75898524288+1

Michael Goetz
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Posts: 13625
ID: 53948
Credit: 273,844,019
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Message 86236 - Posted: 15 Jun 2015 | 18:16:01 UTC

And we are done! Thank you everyone for an enjoyable birthday party!

Some final statistics:

Challenge: PrimeGrid Birthday
App: 6 (SOB/PSP/ESP-Sieve)
(As of 2015-06-15 18:03:44 UTC)

1160449 tasks have been sent out. [CPU/GPU/anonymous_platform: 1160161 (100%) / 0 (0%) / 288 (0%)]

Of those tasks that have been sent out:

59224 (5%) came back with some kind of an error. [59224 (5%) / 0 (0%) / 0 (0%)]
898400 (77%) have returned a successful result. [898112 (77%) / 0 (0%) / 288 (0%)]
199525 (17%) are still in progress. [199283 (17%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

151094 (17%) are pending validation. [150971 (17%) / 0 (0%) / 83 (0%)]
747306 (83%) have been successfully validated. [747141 (83%) / 0 (0%) / 205 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]

Over a million tasks sent -- and nearly 900 thousand of them returned before the end of the challenge. Wow!

Well done everyone!
____________
My lucky number is 75898524288+1

Michael Goetz
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Message 86237 - Posted: 15 Jun 2015 | 18:23:23 UTC

Let the cleanup begin! This should go pretty quickly given the short 4 day deadlines.

Cleanup Status:
15-Jun: PrimeGrid Birthday: 151052 tasks outstanding; 126691 affecting individual (296) scoring positions; 75222 affecting team (83) scoring positions.
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My lucky number is 75898524288+1

MeFigaYoma
Volunteer tester

Joined: 8 Feb 15
Posts: 74
ID: 381234
Credit: 28,361,923
RAC: 58,729

Message 86246 - Posted: 15 Jun 2015 | 20:26:42 UTC

0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]

Good to see.

59224 (5%) came back with some kind of an error. [59224 (5%) / 0 (0%) / 0 (0%)]

I assume most of these are from only a few computers that, since it takes only a few seconds to error out a task, managed to disproportionately skew the results.

Looking at the scoreboard, it seems I have landed in 297th place. Yay, finally a scoring position! For the first two days, my laptop was working on and off due to WiFi issues; if it had been working the entire time I could have gotten even higher. I also got my gold badge for PSP-sieve :)

Thank you to all the people who administered the challenge, and to all my wingmen in the challenge.

Michael Goetz
Volunteer moderator

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Posts: 13625
ID: 53948
Credit: 273,844,019
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Message 86250 - Posted: 15 Jun 2015 | 22:28:46 UTC - in response to Message 86246.

I assume most of these are from only a few computers that, since it takes only a few seconds to error out a task, managed to disproportionately skew the results.

That is correct. This is actually a very low error rate, given that errors take about 3 seconds and valid tasks take much, much longer.
____________
My lucky number is 75898524288+1

Terminator

Joined: 11 Jul 07
Posts: 11
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Credit: 210,839,765
RAC: 77,497

Message 86251 - Posted: 15 Jun 2015 | 22:31:28 UTC

Thanks to all for the PrimeGrid's Birthday Challenge!

Greatings to all: Terminator

SETI@HomeWow Event 2015 Anmeldung klick here

Michael Goetz
Volunteer moderator

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Posts: 13625
ID: 53948
Credit: 273,844,019
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Message 86270 - Posted: 16 Jun 2015 | 17:28:37 UTC - in response to Message 86237.

Let the cleanup begin! This should go pretty quickly given the short 4 day deadlines.

Cleanup Status:
15-Jun: PrimeGrid Birthday: 151052 tasks outstanding; 126691 affecting individual (296) scoring positions; 75222 affecting team (83) scoring positions.
16-Jun: PrimeGrid Birthday: 68525 tasks outstanding; 47206 affecting individual (285) scoring positions; 8293 affecting team (54) scoring positions.

____________
My lucky number is 75898524288+1

Dj Ninja

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Credit: 385,365,738
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Message 86271 - Posted: 17 Jun 2015 | 1:09:39 UTC

Fear not, we learned out lesson and won't be doing that again.

Thank you! *thump up*

I experienced no single server problem this time - not even a reduced speed. Keep up the good work! Some other projects should have a look here how this has to be made!

Very nice also to see the race statistics published in this thread.

Some of the error tasks are mine due to something like an unclean shutdown/pausing of queued SOB or GFN tasks on one machine. The machine even didn't reach full capacity, most tasks ran very slow, some tasks crashed after a few minutes. A reboot solved the problem.

Michael Goetz
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Posts: 13625
ID: 53948
Credit: 273,844,019
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Message 86276 - Posted: 17 Jun 2015 | 14:09:32 UTC - in response to Message 86270.

Let the cleanup begin! This should go pretty quickly given the short 4 day deadlines.

Cleanup Status:
15-Jun: PrimeGrid Birthday: 151052 tasks outstanding; 126691 affecting individual (296) scoring positions; 75222 affecting team (83) scoring positions.
16-Jun: PrimeGrid Birthday: 68525 tasks outstanding; 47206 affecting individual (285) scoring positions; 8293 affecting team (54) scoring positions.
17-Jun: PrimeGrid Birthday: 40034 tasks outstanding; 26119 affecting individual (270) scoring positions; 3389 affecting team (42) scoring positions.

____________
My lucky number is 75898524288+1

Janita

Joined: 5 Feb 09
Posts: 18
ID: 35144
Credit: 71,866,158
RAC: 32,811

Message 86277 - Posted: 17 Jun 2015 | 14:26:20 UTC - in response to Message 86276.

Is there a chance that we get also some numbers about eliminated prime candidates? I have run more than 600 tasks and found only one prime factor (and I do not know for which sub-project SoP, PSP, or ESP). Thanks!

Michael Goetz
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Message 86278 - Posted: 17 Jun 2015 | 14:39:54 UTC - in response to Message 86277.

Is there a chance that we get also some numbers about eliminated prime candidates? I have run more than 600 tasks and found only one prime factor (and I do not know for which sub-project SoP, PSP, or ESP). Thanks!

We're only sieving ESP right now, so any factors that are found will be for the ESP project. SoB and PSP are sieved to a much higher "n" than ESP, so we're bringing the ESP sieve up on par with the other two.

Other than that, what sort of information are you looking for?

____________
My lucky number is 75898524288+1

Janita

Joined: 5 Feb 09
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Credit: 71,866,158
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Message 86279 - Posted: 17 Jun 2015 | 18:12:51 UTC - in response to Message 86278.

I'd like to know how many prime factors have been found during the challange and maybe also how many candidates have been removed from the primality test list for the near future, say, for the llr-tests that we can expect to be run within the next year or between the current n (~8,200,000) and n=10.000.000. As I understand the sieving goes much further than 10.000.000. Thank you!

Michael Goetz
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Message 86280 - Posted: 17 Jun 2015 | 18:33:47 UTC - in response to Message 86279.

I'd like to know how many prime factors have been found during the challange

Jim might be able to give you more information, but I can tell you what I know.

I don't believe we have any way to track the number of factors found over a specific period of time. When a factor is found, that number is removed from the sieve file and a counter for that user is incremented, but we don't track who found it or when it was found. So I can't tell you which factor you found, or when a particular factor was found.

...and maybe also how many candidates have been removed from the primality test list for the near future, say, for the llr-tests that we can expect to be run within the next year or between the current n (~8,200,000) and n=10.000.000. As I understand the sieving goes much further than 10.000.000. Thank you!

Again, although I could tell you how many candidates remain, I can't tell you how many were removed during the challenge.

I can tell you, however, that we probably removed ZERO candidates between 8,200,000 <= n <= 10,000,000. We're sieving ABOVE 10,000,000, not below. (We're sieving 10,000,000 <= n <= 50,000,000, which will bring the ESP to parity with the SoB and PSP sieves.)

We had no ESP sieve at all above 10M, and once we moved ESP to BOINC it was obvious that we would need a sieve above 10M sooner rather than later.

____________
My lucky number is 75898524288+1

JimB
Honorary cruncher

Joined: 4 Aug 11
Posts: 916
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Credit: 974,532,191
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Message 86283 - Posted: 17 Jun 2015 | 20:41:05 UTC

As close as I can easily tell (and I've spent an hour getting this information) we found 2655 factors during the challenge. That number is still incomplete, since factors are not recorded until two results agree and the workunit validates. Since this ESP/PSP/SoB sieve uses a sieve file, close to 100% of those should result in removals from the sieve.

Factors found are not tagged with dates. While I could probably write a query to give an exact factor count it would only be close to complete at the very end of the cleanup. Even then some factors may not be counted, because as soon as all the scoring positions are known, we close the challenge and start purging completed challenge workunits without waiting for every last one to validate.

The sieve file is not updated very often as it doesn't make a great deal of difference in how long the sieve workunits take. When we start actually LLR testing ESP candidates for n>=10M then the sieve will be updated every time we need to load more work. Also starting at that time, any factor found for a candidate active in the system will cause unsent workunits to be automatically canceled. We never cancel work that's already being crunched as then the user would not get any credit. However, that's not going to happen very often (if at all) because at any given time only a very narrow n range is being LLR tested as opposed to sieving which runs on the entire n=10M-50M range simultaneously.

The other time the sieve is updated is if a k value is eliminated. That DOES make a significant difference in the runtime (it gets faster). In the past I've always updated the sieve within 24 hours of a prime being verified (not even waiting for the wingman sometimes). If the sieve is updated for any reason, all factors found are always removed - so it's not just a matter of eliminating a k.

For those who may think that 2655 candidates found out of over a million workunits is a small number, remember that some of these candidates will take more than a week to LLR test.

Michael Goetz
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Message 86292 - Posted: 18 Jun 2015 | 12:07:19 UTC - in response to Message 86276.

Let the cleanup begin! This should go pretty quickly given the short 4 day deadlines.

Cleanup Status:
15-Jun: PrimeGrid Birthday: 151052 tasks outstanding; 126691 affecting individual (296) scoring positions; 75222 affecting team (83) scoring positions.
16-Jun: PrimeGrid Birthday: 68525 tasks outstanding; 47206 affecting individual (285) scoring positions; 8293 affecting team (54) scoring positions.
17-Jun: PrimeGrid Birthday: 40034 tasks outstanding; 26119 affecting individual (270) scoring positions; 3389 affecting team (42) scoring positions.
18-Jun: PrimeGrid Birthday: 24309 tasks outstanding; 14042 affecting individual (238) scoring positions; 1809 affecting team (29) scoring positions.
19-Jun: PrimeGrid Birthday: 12770 tasks outstanding; 5800 affecting individual (177) scoring positions; 347 affecting team (15) scoring positions.
20-Jun: PrimeGrid Birthday: 5804 tasks outstanding; 1705 affecting individual (120) scoring positions; 9 affecting team (6) scoring positions.
21-Jun: PrimeGrid Birthday: 4716 tasks outstanding; 1043 affecting individual (94) scoring positions; 5 affecting team (4) scoring positions.
22-Jun: PrimeGrid Birthday: 2353 tasks outstanding; 375 affecting individual (63) scoring positions; 3 affecting team (2) scoring positions.
23-Jun: PrimeGrid Birthday: 1250 tasks outstanding; 119 affecting individual (35) scoring positions; 1 affecting team (1) scoring positions.
24-Jun: PrimeGrid Birthday: 498 tasks outstanding; 33 affecting individual (17) scoring positions; 0 affecting team (0) scoring positions.
25-Jun: PrimeGrid Birthday: 260 tasks outstanding; 16 affecting individual (10) scoring positions; 0 affecting team (0) scoring positions.
26-Jun: PrimeGrid Birthday: 147 tasks outstanding; 10 affecting individual (7) scoring positions; 0 affecting team (0) scoring positions.
27-Jun: PrimeGrid Birthday: 70 tasks outstanding; 3 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
28-Jun: PrimeGrid Birthday: 31 tasks outstanding; 2 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
29-Jun: PrimeGrid Birthday: 18 tasks outstanding; 1 affecting individual (1) scoring positions; 0 affecting team (0) scoring positions.
30-Jun: PrimeGrid Birthday: 12 tasks outstanding; 1 affecting individual (1) scoring positions; 0 affecting team (0) scoring positions.
____________
My lucky number is 75898524288+1

Michael Goetz
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ID: 53948
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Message 86504 - Posted: 30 Jun 2015 | 13:40:45 UTC - in response to Message 86292.

Let the cleanup begin! This should go pretty quickly given the short 4 day deadlines.

Cleanup Status:
15-Jun: PrimeGrid Birthday: 151052 tasks outstanding; 126691 affecting individual (296) scoring positions; 75222 affecting team (83) scoring positions.
16-Jun: PrimeGrid Birthday: 68525 tasks outstanding; 47206 affecting individual (285) scoring positions; 8293 affecting team (54) scoring positions.
17-Jun: PrimeGrid Birthday: 40034 tasks outstanding; 26119 affecting individual (270) scoring positions; 3389 affecting team (42) scoring positions.
18-Jun: PrimeGrid Birthday: 24309 tasks outstanding; 14042 affecting individual (238) scoring positions; 1809 affecting team (29) scoring positions.
19-Jun: PrimeGrid Birthday: 12770 tasks outstanding; 5800 affecting individual (177) scoring positions; 347 affecting team (15) scoring positions.
20-Jun: PrimeGrid Birthday: 5804 tasks outstanding; 1705 affecting individual (120) scoring positions; 9 affecting team (6) scoring positions.
21-Jun: PrimeGrid Birthday: 4716 tasks outstanding; 1043 affecting individual (94) scoring positions; 5 affecting team (4) scoring positions.
22-Jun: PrimeGrid Birthday: 2353 tasks outstanding; 375 affecting individual (63) scoring positions; 3 affecting team (2) scoring positions.
23-Jun: PrimeGrid Birthday: 1250 tasks outstanding; 119 affecting individual (35) scoring positions; 1 affecting team (1) scoring positions.
24-Jun: PrimeGrid Birthday: 498 tasks outstanding; 33 affecting individual (17) scoring positions; 0 affecting team (0) scoring positions.
25-Jun: PrimeGrid Birthday: 260 tasks outstanding; 16 affecting individual (10) scoring positions; 0 affecting team (0) scoring positions.
26-Jun: PrimeGrid Birthday: 147 tasks outstanding; 10 affecting individual (7) scoring positions; 0 affecting team (0) scoring positions.
27-Jun: PrimeGrid Birthday: 70 tasks outstanding; 3 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
28-Jun: PrimeGrid Birthday: 31 tasks outstanding; 2 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
29-Jun: PrimeGrid Birthday: 18 tasks outstanding; 1 affecting individual (1) scoring positions; 0 affecting team (0) scoring positions.
30-Jun: PrimeGrid Birthday: 12 tasks outstanding; 1 affecting individual (1) scoring positions; 0 affecting team (0) scoring positions.

This is the workunit we're waiting for:

http://www.primegrid.com/workunit.php?wuid=437134414

Since this project has short 4 day deadlines, and these tasks rarely have computation errors, this should finish in the next couple of days.
____________
My lucky number is 75898524288+1

Pooh Bear 27

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Message 86533 - Posted: 2 Jul 2015 | 9:39:46 UTC

Looks like this one finished, also.

Congrats to everyone!

[DPC]Charley

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Message 86541 - Posted: 2 Jul 2015 | 19:25:02 UTC

As usual, sieving challenges clean up quickly. After only two weeks, the stats have been finalized and we can announce the winners of this challenge.

The top users are zunewantan, Grandpa and Scott Brow.

The top teams are Czech National Team, Sicituradastra. and Aggie The Pew
____________
PrimeGrid Challenge Overall standings --- Last update: From Pi to Paddy (2016)

Miklos M.

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Message 86930 - Posted: 4 Aug 2015 | 19:53:55 UTC

Happy Birthday PrimeGrid.

Dave

Joined: 13 Feb 12
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Message 86932 - Posted: 4 Aug 2015 | 20:30:48 UTC

Nnno that was 12 June.

Miklos M.

Joined: 14 Apr 12
Posts: 371
ID: 138455
Credit: 12,868,262,352
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Message 86938 - Posted: 5 Aug 2015 | 10:58:02 UTC - in response to Message 86932.

Better late than never.

Wingless Wonder

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Message 86939 - Posted: 5 Aug 2015 | 11:31:38 UTC

Mods, please move the last few posts (this one, included) to the PrimeGrid's Birthday Challenge thread or other appropriate place, thanks in advance.

Message boards : Number crunching : PrimeGrid's Birthday Challenge!