Author 
Message 
Michael GutierrezVolunteer moderator Project administrator Project scientist
Send message
Joined: 21 Mar 17 Posts: 348 ID: 764476 Credit: 46,281,510 RAC: 0

Welcome to International Women's Day Challenge
The second challenge of the 2023 Series will be on International Women's Day, a global holiday celebrated annually on March 8 as a focal point in the women's rights movement, bringing attention to issues such as gender equality, reproductive rights, and violence and abuse against women.
The challenge will be 1day in duration and offered on the SGSLLR application, beginning 08 March 15:00 UTC and ending 09 March 15:00 UTC.
To participate in the challenge:
 Wait until the challenge timeframe starts (or set your BOINC Client download schedule accordingly), as tasks issued before the challenge will not count.
 In your PrimeGrid preferences section, select only the Sophie Germain Prime Search (LLR) project.
Important reminders:
 NOTE: If the candidate being tested is indeed prime, the task will take TWICE as long to complete. This is because LLR is automatically checking for a twin prime!
 The typical deadline for some of these WUs is longer than the challenge timeframe, so make sure your computer is able to return the WUs within 1 days. Only tasks issued AFTER the start time and returned BEFORE the finish time will be counted.
 At the Conclusion of the Challenge: We kindly ask users "moving on" to ABORT their tasks instead of DETACHING, RESETTING, or PAUSING. ABORTING tasks allows them to be recycled immediately; thus a much faster "clean up" to the end of a Challenge. DETACHING, RESETTING, and PAUSING tasks causes them to remain in limbo until they EXPIRE. Therefore, we must wait until tasks expire to send them out to be completed. Please consider either completing what's in the queue or ABORTING them. Thanks!
Let's talk about hardware:
Supported platforms for LLR tasks:
 Windows: 32 bit, 64 bit
 Linux: 32 bit, 64 bit
 Mac: 64 bit
Intel and recent AMD CPUs with FMA3 capabilities (Haswell or better for Intel, Zen2 or better for AMD) will have a very large advantage running LLR tasks, and CPUs with AVX512 capabilities (certain recent Intel SkylakeX and Xeon CPUs, AMD Ryzen 7000 and EPYC CPUs) will be the fastest.
Note that LLR is running the latest AVX512 version of LLR which takes full advantage of the features of these newer CPUs. It's faster than the previous LLR app and draws more power and produces more heat, especially if they're highly overclocked. If you have certain recent Intel SkylakeX, Xeon, or AMD Zen4+ CPUs, especially if it's overclocked or has overclocked memory, and haven't run the new AVX512 LLR before, we strongly suggest running it before the challenge while you are monitoring the temperatures.
As with all number crunching, excessive heat can potentially cause permanent hardware failure. Please ensure your cooling system is sufficient. Please see this post for more details on how you can "stress test" your CPU.
Additional information:
Time zone converter:
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 at the very top, above the countdown clock.
Scoring Information
Scores will be kept for individuals and teams. Only tasks issued AFTER 08 March 15:00 UTC and received BEFORE 09 March 15:00 UTC will be considered for credit. We will be using the same scoring method as we currently use for BOINC credits. 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.
About the Sophie Germain Prime Search
A prime number p is called a Sophie Germain prime if 2p + 1 is also prime. For example, 5 is a Sophie Germain prime because it is prime and 2 × 5 + 1 = 11, is also prime. These numbers are named after MarieSophie Germain, an extraordinary "French mathematician who made important contributions to the fields of differential geometry and number theory and to the study of Fermat's Last Theorem." (Wiki)
We'll be searching the form k*2^n1. If it is prime, then we'll check k*2^n+1, k*2^(n1)1, & k*2^(n+1)1. The opportunity to find SG's and Twins in the same subproject is appealing.
For more information about Sophie Germain primes, please visit these links:
http://primes.utm.edu/glossary/page.php?sort=SophieGermainPrime
http://mathworld.wolfram.com/SophieGermainPrime.html
http://en.wikipedia.org/wiki/Sophie_Germain_prime
For more information about MarieSophie Germain, please visit these links:
http://en.wikipedia.org/wiki/Sophie_Germain
http://www.pbs.org/wgbh/nova/proof/germain.html
What is LLR?
The LucasLehmerRiesel (LLR) test is a primality test for numbers of the form N = k*2^n − 1, with 2^n > k. Also, LLR is a program developed by Jean Penne that can run the LLRtests. It includes the Proth test to perform +1 tests and PRP to test non base 2 numbers. See also:
____________
Time flies like an arrow. Fruit flies like a banana.




Will PG servers be able to handle the challenge, or did i overlook an upgrade since last SGS challenge?
____________




Will PG servers be able to handle the challenge, or did i overlook an upgrade since last SGS challenge?
Since SGS does not use certificates (fast proof tasks), does the project put much load on PrimeGrid's servers? /JeppeSN 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

Will PG servers be able to handle the challenge, or did i overlook an upgrade since last SGS challenge?
I guess we'll see soon enough. :)
The servers actually have a lot more... servers. We've added more systems, but mostly that's to handle the huge resource drain that is required for fastDC processing. For something like SGS, the system basically has the same capability as it did three years ago when we ran the last SGS challenge. This time, it's only a one day challenge, which makes it easier.
Looking at the forum thread for that challenge, the problem we had was with leaderboard generation taking a long time, and I suspect that will be true this time as well. But as far as processing tasks is concerned, I think we'll be fine. BOINC has a lot of flaws, but it's actually really good at sending and receiving large amounts of tasks. You know, the important stuff. :)
____________
My lucky number is 75898^{524288}+1 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

We'll see how it goes. I have an idea for speeding up the leaderboards, but... it's a big change for a problem that has a very short duration.
We have a very fast server called "kraken", which has 4 TB of RAID 1 NVMe memory. If I replicate the database to kraken, and then generate the leaderboards locally on that machine, it should be significantly faster than doing it on the older servers which use SSDs as well as having slower cpus.
It also depends on admin availability.
____________
My lucky number is 75898^{524288}+1 



Hi, settings for the SGS says multithreading is available but is not recommended. Should we use multithreading at all or do you suggest to limit 1 task per thread? Thanks 


mackerelVolunteer tester
Send message
Joined: 2 Oct 08 Posts: 2645 ID: 29980 Credit: 568,565,361 RAC: 358

Hi, settings for the SGS says multithreading is available but is not recommended. Should we use multithreading at all or do you suggest to limit 1 task per thread? Thanks
It depends a bit on your goals. If it is to complete as many tasks as possible for maximum challenge score, 1 thread per task is likely optimal on most systems.
If the goal is to maximise the number of "1st" then 2 cores per task may be considered. It is impossible to give a definitive answer as it depends on hardware, settings, and what other people are doing at the time. In my opinion, as these primes are not t5k reportable, there is little value in chasing "1st" outside of the extremely slim chance you get an actual SGS. 



Recent primes found in the SGS project (these are not Sophie Germain primes) can be seen here:
/primes/primes.php?project=SGS&sortby=date&dc=yes
Does anyone want to give a bet how many such primes we can find in the 24 h challenge window? (Pick some rule for which primes to include, like the task of the 1stfinder should count for the challenge.)
/JeppeSN 


tngSend message
Joined: 29 Aug 10 Posts: 482 ID: 66603 Credit: 47,208,296,406 RAC: 26,831,057

Recent primes found in the SGS project (these are not Sophie Germain primes) can be seen here:
/primes/primes.php?project=SGS&sortby=date&dc=yes
Does anyone want to give a bet how many such primes we can find in the 24 h challenge window? (Pick some rule for which primes to include, like the task of the 1stfinder should count for the challenge.)
/JeppeSN
41
____________



Scott BrownVolunteer moderator Project administrator Volunteer tester Project scientist
Send message
Joined: 17 Oct 05 Posts: 2392 ID: 1178 Credit: 18,615,519,820 RAC: 7,277,342

37



Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

67 



26
____________
MyStats
My Badges 



Thirty four primes will be found. 



39
____________



EBMSend message
Joined: 1 Jun 14 Posts: 53 ID: 315843 Credit: 27,852,662 RAC: 81,403

Going for around 40 here
____________
113152938^32768+1 Baby Prime




37
____________




Recent primes found in the SGS project (these are not Sophie Germain primes) can be seen here:
/primes/primes.php?project=SGS&sortby=date&dc=yes
Does anyone want to give a bet how many such primes we can find in the 24 h challenge window? (Pick some rule for which primes to include, like the task of the 1stfinder should count for the challenge.)
/JeppeSN
With the current stats we're completing 400K tasks a day and SGS has been finding a prime (on average) once in every 14,432 tasks. That would be about 27 primes in one day already. But that 400K number is slowly increasing as the challenge approaches, so  I'm gonna guess 50 primes.
____________
1 PPSE (+2 DC) & 5 SGS primes 



44
____________
Greetings, Jens
147433824^131072+1 



69
:D
____________
Слава Україні! 



13 



42!! The answer to life the universe and everything :)
Marvin: Here I am with a brain the size of a planet and they ask me to pick a number. Call that job satisfaction? 



Average of 3 per hour.
So, 72.
____________
"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment. 



49 



71
____________



Dave Send message
Joined: 13 Feb 12 Posts: 3201 ID: 130544 Credit: 2,282,842,762 RAC: 1,024,573

"More than 3." 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

We may have all underestimated.
Not half way through.
Last info says I am doing 14% of tasks.
I have gotten 4 finds.
All firsts, but I think that doesn't matter  someone will be first with a find.
I am saying 9 hours through.
4 x (24/9) / 0.14
Sorry if I got bodmas incorrect.
76 primes.
Edit: panic  I have 2 seconds  114 primes. 



The task status page says we've hit 1.47 million SGS tasks per day. I severely underestimated then  my prediction of 50 primes was based on a guess that tasks per day would double from the 400K just before the challenge, to about 800K.
At this rate we could be on track for 100 primes during the challenge.
____________
1 PPSE (+2 DC) & 5 SGS primes 



Wow!
My two primes so far are the same number of digits how odd.
7779439418187*2^12900001 (388342 digits)
7825167726087*2^12900001 (388342 digits)
https://www.primegrid.com/workunit.php?wuid=894863310
https://www.primegrid.com/workunit.php?wuid=894077015 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

Now 7 firsts/seconds.
12.8% of tasks.
7 x (24/12) /0.128
109 primes 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

Wow!
My two primes so far are the same number of digits how odd.
7779439418187*2^12900001 (388342 digits)
7825167726087*2^12900001 (388342 digits)
https://www.primegrid.com/workunit.php?wuid=894863310
https://www.primegrid.com/workunit.php?wuid=894077015
I don't get this either  it seems to be what happens 



Wow!
My two primes so far are the same number of digits how odd.
7779439418187*2^12900001 (388342 digits)
7825167726087*2^12900001 (388342 digits)
https://www.primegrid.com/workunit.php?wuid=894863310
https://www.primegrid.com/workunit.php?wuid=894077015
I don't get this either  it seems to be what happens
SGS has been at the same number of digits for a really long time. See the list of SGS primes and you'll see how it's pages and pages of exactly 388,342 digits.
____________
1 PPSE (+2 DC) & 5 SGS primes 



Wow!
My two primes so far are the same number of digits how odd.
7779439418187*2^12900001 (388342 digits)
7825167726087*2^12900001 (388342 digits)
https://www.primegrid.com/workunit.php?wuid=894863310
https://www.primegrid.com/workunit.php?wuid=894077015
In total, I have found 4 SGS primes as 1st finder (2 in 2018, 2 in 2020) and 1 as DC (current challenge  yes, bcavnaugh, I DC'ed one of your recent primes).
All of them have 388,342 digits.
5218791064665*2^12900001 388,342 (decimal) 20200408 05:40:10 UTC
5049807224247*2^12900001 388,342 (decimal) 20200402 01:54:22 UTC
3997781542137*2^12900001 388,342 (decimal) 20180606 00:56:32 UTC
3985902010317*2^12900001 388,342 (decimal) 20180523 21:38:46 UTC
7825167726087*2^12900001 388,342 (decimal) 20230308 22:40:42 UTC
____________
"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment. 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

The task status page says we've hit 1.47 million SGS tasks per day. I severely underestimated then  my prediction of 50 primes was based on a guess that tasks per day would double from the 400K just before the challenge, to about 800K.
At this rate we could be on track for 100 primes during the challenge.
Yes, but that includes time before the challenge started. We're currently on a pace for 2.5 million tasks during the 24 hours of the challenge. However, I expect that number to go up.
The first hour of the challenge had no TSC droplets running. That's 7000+ core hours, Far more important, however, is that people tend to add more power as the challenge progresses.
My guess is we'll break 3 million tasks.
____________
My lucky number is 75898^{524288}+1 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

Wow!
My two primes so far are the same number of digits how odd.
7779439418187*2^12900001 (388342 digits)
7825167726087*2^12900001 (388342 digits)
https://www.primegrid.com/workunit.php?wuid=894863310
https://www.primegrid.com/workunit.php?wuid=894077015
I'm not sure if you were joking, or simply weren't aware. but almost all SGS candidates in the sieve file have the exact same number of digits. All SGS candidates tested since sometime in 2015 have 388342 digits. and I suspect all of the remaining candidates in the sieve file also have 388342 digits.
SGS candidates grow VERY slowly.
____________
My lucky number is 75898^{524288}+1 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

10 firsts/seconds.
12.68% of tasks.
10 x (15/24)/0.127
Now 49 primes.
Don't panic  the info I am using for tasks done isn't updated as regularly. 



10 firsts/seconds.
12.68% of tasks.
10 x (15/24)/0.127
Now 49 primes.
10 must be divided by 15/24.
126 primes. 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

10 firsts/seconds.
12.68% of tasks.
10 x (15/24)/0.127
Now 49 primes.
10 must be divided by 15/24.
126 primes.
I am embarrassed to get that wrong  I am about to do a new estimate 



Wow!
My two primes so far are the same number of digits how odd.
7779439418187*2^12900001 (388342 digits)
7825167726087*2^12900001 (388342 digits)
https://www.primegrid.com/workunit.php?wuid=894863310
https://www.primegrid.com/workunit.php?wuid=894077015
I'm not sure if you were joking, or simply weren't aware. but almost all SGS candidates in the sieve file have the exact same number of digits. All SGS candidates tested since sometime in 2015 have 388342 digits. and I suspect all of the remaining candidates in the sieve file also have 388342 digits.
SGS candidates grow VERY slowly.
Surely, every k between 2'021'126'350'595.89 and 20'211'263'505'958.9 will produce 388'342 digits. Since the project stops at 10'000'000'000'000, it will be on this number of digits "forever", as you suspect.
(k*b^n + c: We say that in a project that varies n (with b and k fixed) the candidates grow fast, and in one that varies b (with n and k fixed) they grow slowly. However, with SGS, only k varies (the power b^n is fixed to 2^1290000), so the candidates grow extremely slowly.)
/JeppeSN 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

Me doing 12.68% is not a cool piece of information, being not the latest.
7 UTC now  16 hours done?
It is a bit dodgy, but using statistics from my 12.68% (which is also dodgy  because it is old)
Now I have 10 SGS.
0.1268 x 24/16 x 10 =
I cannot work this out anymore 



From this we also see that twice the candidate (relevant if it is an actual Sophie Germain prime) stays at 388'342 digits for the rest of the series we are are testing. /JeppeSN 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

I am trying to not panic that I cannot have a good attempt at maths.
10 primes.
16 of 24 hours.
12.7% of work done.
Surely (don't call me Surly)
10 x (24/16) x (1/0.127)
I am nervous about bodmas  so why how I wrote it.
118 primes.
Sorry if I screwed up before or again
Edit: I just cannot think anymore  if I could think ever with some meaning  of firsts and seconds. 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

In addition to what problems I have not foreseen,
The info 12.7% is relied on strongly.
12 x (24/18.5) x (1/0.127)
122 primes? 


pschoeferVolunteer developer Volunteer tester
Send message
Joined: 20 Sep 05 Posts: 686 ID: 845 Credit: 2,910,184,413 RAC: 524,845

I think there is a minor bug in the challenge stats. If I divide the score by the number of tasks for each participant, I get values between 39.91357038 and 39.91357125, i.e. no difference up to the 6th decimal place. However, as the credit granted for a SGS task resulting in a prime is twice as much as for a normal task, the variation should be much larger. Even for Nick's 311923 tasks, an additional prime task would change the 4th decimal place in the credit per task ratio.
____________



HonzaVolunteer moderator Volunteer tester Project scientist Send message
Joined: 15 Aug 05 Posts: 1957 ID: 352 Credit: 6,125,686,657 RAC: 2,246,014

Well, in my results I see:
39.91 credit for regular SGS tasks
79.83 credit for SGS prime tasks.
Challenge: 862 053.31 credit and 21 598 tasks.
21596 * 39.91 = 861896,36
2 * 79.83 = 159,66
Total 862056.02
____________
My stats 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

I think there is a minor bug in the challenge stats. If I divide the score by the number of tasks for each participant, I get values between 39.91357038 and 39.91357125, i.e. no difference up to the 6th decimal place. However, as the credit granted for a SGS task resulting in a prime is twice as much as for a normal task, the variation should be much larger. Even for Nick's 311923 tasks, an additional prime task would change the 4th decimal place in the credit per task ratio.
I have to take a look, but I think you're right  it's a small oversight in the challenge leaderboards. I don't think it has the smarts (or the data) to do the adjustment for the when a task is prime.
For an SR5 challenge (which has a similar prime "bonus"), that would rarely affect challenge scores because those primes are so rare. There may be a few other examples, but they'll also be large and rare primes.
Therefore, SGS is the only project where this happens. I'm inclined to treat this as an oversight in the rules rather than an oversight in the code. For the purpose of challenge scores, we don't count the bonus credit you get when you find a prime. This produces an average difference between challenge score and actual credit of approximately 0.0077%, or three quarters of one basis point. That's acceptable to me, and avoids a really nasty and resource intensive revision of the challenge code. That's especially significant for SGS because of the number of tasks that run in a even a short SGS challenge.
____________
My lucky number is 75898^{524288}+1 


Dave Send message
Joined: 13 Feb 12 Posts: 3201 ID: 130544 Credit: 2,282,842,762 RAC: 1,024,573

"More than 3."
Guess I was right then. 


compositeVolunteer tester Send message
Joined: 16 Feb 10 Posts: 1149 ID: 55391 Credit: 1,090,912,095 RAC: 645,622

If we sustain the SGS challenge rate, how many days would remain before exhausting the sieve file? 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

If we sustain the SGS challenge rate, how many days would remain before exhausting the sieve file?
select count(*) from result where appid=2 and received_time between unix_timestamp("202338 15:0:0") and unix_timestamp("202339 15:0:0") and server_state=5 and outcome=1 and validate_state in (0,1,4);
++
 count(*) 
++
 2696625 
++
Tasks per day: 2696625
Candidates per day: 1348312.5
select max(k) from result_llr where project="SGS" and appid=2 and server_state>2 and n=1290000;
++
 max(k) 
++
 7908597656115 
++
Leading edge: k=7908597656115
grep n 7908597656115 /hdd/sieving/sgs/current.txt
28956694:7908597656115 1290000
Position of leading edge in sieve file: 28956694
wc /hdd/sieving/sgs/current.txt
54843178 109686356 1206549916 /hdd/sieving/sgs/current.txt
Candidates in sieve file: 54843178
Remaining candidates in sieve file: 25886484
Days remaining at challenge rate: 19.1992
Normally, we do about 20K tasks (10K candidates). The challenge therefore ran at a rate of about 130 times time normal rate.
The last time we ran an SGS challenge it was three days long, and the server struggled because of the resulting size of the database. If we ran a 20 day SGS challenge, yes, we would theoretically finish off the current sieve file, but...
Normally the database has about 1.5 million tasks in the result table. Right now, after the 1 day challenge, it has about 5.7 million tasks. If we ran out the sieve file, it would have in excess of 50 million tasks. The database is currently close to its maximum all time size. Certain processes get very slow when the database gets large. It's unclear at what point the server would break.
____________
My lucky number is 75898^{524288}+1 


EBMSend message
Joined: 1 Jun 14 Posts: 53 ID: 315843 Credit: 27,852,662 RAC: 81,403

Crazy to think...
I did 25,390 tasks and that wasn't even a drop in the bucket.
Good job to everyone yesterday!
____________
113152938^32768+1 Baby Prime



Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

I think I have been getting the method of estimating the number of primes from what I have been doing quite wrong.
I now think I should divide by 2.
There is a logical pathway that I haven't made the best job of traversing.
12% of tasks signifigant  yeah likely.
Then how to treat firsts and seconds from what I have done?
For all the finds in the entire challenge  half will be firsts and half will be seconds.
I cannot see that someone has listed the number of primes  sorry if I have missed it. 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

Noone is replying.
Maybe to see I can work it out?
Let's keep the time to 24 hours.
(I can get that data, but it won't change what I think the methodology should be)
The larger the sample size, the more accurate it will be of the whole lot?
I see an issue between computer speed  then firsts and seconds.
But maybe we can be more clever?
Or maybe show stupidity on my part?
The amount of 'hits' should be halved to get what is going on overall.
The larger the sample size, the more close to the whole set. 



I think 95 primes was found during the challenge. 


Michael GutierrezVolunteer moderator Project administrator Project scientist
Send message
Joined: 21 Mar 17 Posts: 348 ID: 764476 Credit: 46,281,510 RAC: 0

What a whirlwind! The challenge is over, cleanup tasks are now available, and here are the workunit statistics so far!
Challenge: International Women's Day
App: 2 (SGS)
(As of 20230310 05:37:07 UTC)
2845790 tasks have been sent out. [CPU/GPU/anonymous_platform: 2845790 (100%) / 0 (0%) / 0 (0%)]
Of those tasks that have been sent out:
26770 (1%) were aborted. [26770 (1%) / 0 (0%) / 0 (0%)]
2956 (0%) came back with some kind of an error. [2956 (0%) / 0 (0%) / 0 (0%)]
2658042 (93%) have returned a successful result. [2658042 (93%) / 0 (0%) / 0 (0%)]
51556 (2%) are still in progress. [51542 (2%) / 0 (0%) / 0 (0%)]
Of the tasks that have been returned successfully:
48881 (2%) are pending validation. [48867 (2%) / 0 (0%) / 0 (0%)]
2607962 (98%) have been successfully validated. [2607976 (98%) / 0 (0%) / 0 (0%)]
1211 (0%) were invalid. [1211 (0%) / 0 (0%) / 0 (0%)]
25 (0%) are inconclusive. [25 (0%) / 0 (0%) / 0 (0%)]
The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is k=7903885457895. The leading edge was at k=7790339316147 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 1.46% as much as it had prior to the challenge!
____________
Time flies like an arrow. Fruit flies like a banana. 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

For me, apart from CWsieve  it isn't possible to run a significant amount of cloud in challenges later this year.
But undoubtedly, I will experiment with 1 core tasks to see how they cope with large FFTs, and see if results per cost (and time) is viable.
For this challenge, I did have a very satisfying number of cloud cores running SGS  2001
(A space Odyssey.)
The reason for the extra 1?
I had SGS running for a couple of days to make sure I had gotten settings correct.
You really do not want to set up 2000 cores to start at a particular time and not get the preferences settings correct.
With short tasks like SGS, when setting up cores to run at a certain time, it is advisable to have the preference settings ready to go. So if you make a mistake in setting the start time this mistake will appear in a couple of ways.
Also to set the email warning limit very close to the funds in your account  so if something starts happening, you will get an email warning. 



This was by far the most cloud I've ever used. By a factor of over ten. I would've been top 70 without cloud and i came 13th with. But my best performing instance which cost me $0.011 an hour would've finished 290th by itself. My worst performing one (same price) would've been 364th 


Michael GutierrezVolunteer moderator Project administrator Project scientist
Send message
Joined: 21 Mar 17 Posts: 348 ID: 764476 Credit: 46,281,510 RAC: 0

Cleanup Status:
Mar 11: 32075 tasks outstanding; 7217 affecting individual (133) scoring positions; 748 affecting team (7) scoring positions.
Mar 12: 23229 tasks outstanding; 2924 affecting individual (94) scoring positions; 150 affecting team (4) scoring positions.
Mar 13: 22121 tasks outstanding; 2751 affecting individual (91) scoring positions; 145 affecting team (4) scoring positions.
Mar 14: 15636 tasks outstanding; 1396 affecting individual (66) scoring positions; 64 affecting team (3) scoring positions.
Mar 15: 1620 tasks outstanding; 29 affecting individual (7) scoring positions; 1 affecting team (1) scoring positions.
Mar 16: 584 tasks outstanding; 9 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
____________
Time flies like an arrow. Fruit flies like a banana. 


Michael GoetzVolunteer moderator Project administrator
Send message
Joined: 21 Jan 10 Posts: 14009 ID: 53948 Credit: 428,070,122 RAC: 1,088,197

And the challenge results are final!
Congrats to Nick and TeAm AnandTech for winning the individual and team competitions, respectively!
Next up is the 7 day Gotthold Eisenstein's Birthday Challenge on the PSP project, starting on April 16th at 16:00:00 UTC.
Hope you all had as much fun during this crazy one day challenge as we did!
____________
My lucky number is 75898^{524288}+1 


EBMSend message
Joined: 1 Jun 14 Posts: 53 ID: 315843 Credit: 27,852,662 RAC: 81,403

Congratulations to everyone!
____________
113152938^32768+1 Baby Prime




Well done by MarieSophie Germain 200 years ago when women were certainly not expected to do mathematical research. And good luck to all in the continuing fight to ensure equal opportunities for everyone. /JeppeSN 


Michael GutierrezVolunteer moderator Project administrator Project scientist
Send message
Joined: 21 Mar 17 Posts: 348 ID: 764476 Credit: 46,281,510 RAC: 0

The results are final!
During the 1 day challenge, we completed 2656836 tasks (including doublechecks).
118 teams and 509 individuals participated in the challenge.
Top Three Individuals:
1. Nick with 311,923 tasks completed
2. [TA]Skillz with 237,638 tasks completed
3. Scott Brown with 113,721 tasks completed
Top Three Teams:
1. TeAm AnandTech with 481,956 tasks completed
2. BOINC@AUSTRALIA with 367,811 tasks completed
3. SETI.Germany with 231,295 tasks completed
____________
Time flies like an arrow. Fruit flies like a banana. 



By the way, how many primes were found during the challenge? Sorry if I missed this info. 



By the way, how many primes were found during the challenge? Sorry if I missed this info.
Good question, especially since people were betting on that.
One can do this search: /primes/primes.php?project=SGS&sortby=date&dc=yes
It is then easy to count the primes that were returned between 8 March 15:00 UTC and 9 March 15:00 UTC. There are: 99 primes
However, while all of these where returned (by their 1st finder) within the challenge, some of them do not count because the task was given to the user before 8 March at 15:00. This is the case for the two earliest ones, which brings us down to 97 primes. But I have not checked all the primes, so there could be a few more like this that do not count.
It is certain that all the bets that were given before the start of the challenge were too low.
/JeppeSN 



It is certain that all the bets that were given before the start of the challenge were too low.
/JeppeSN
Prechallenge primegrid discord I hevily over estimated 121 and Tern was bang on at 97. 



It is certain that all the bets that were given before the start of the challenge were too low.
/JeppeSN
Prechallenge primegrid discord I hevily over estimated 121 and Tern was bang on at 97.
That is interesting; I had not attempted to find the bets inside Discord. /JeppeSN 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

For me, apart from CWsieve  it isn't possible to run a significant amount of cloud in challenges later this year.
This statement probably misrepresents what I will be doing with the PSP challenge.
Edit: I have tried 3 different cloud options and made my choice. Some of the data is still there to look up. To compare the 3 different ways  the first is not long from having no information.
2nd edit: It is the middle one I have chosen. I haven't considered cost versus computing. It is cache size. 12 cores are better than 8 for this FFT. And I am reasonably confident that the CPUs are 24 cores. It could be better to run a bucket load of single core tasks once  there is no time to run them twice  I am not going there. 


Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

For me, apart from CWsieve  it isn't possible to run a significant amount of cloud in challenges later this year.
This statement probably misrepresents what I will be doing with the PSP challenge.
Edit: I have tried 3 different cloud options and made my choice. Some of the data is still there to look up. To compare the 3 different ways  the first is not long from having no information.
2nd edit: It is the middle one I have chosen. I haven't considered cost versus computing. It is cache size. 12 cores are better than 8 for this FFT. And I am reasonably confident that the CPUs are 24 cores which to me gives me a hint of what else it may be doing. It could be better to run a bucket load of single core tasks once  there is no time to run them twice  I am not going there.



Nick Send message
Joined: 11 Jul 11 Posts: 2298 ID: 105020 Credit: 8,357,136,965 RAC: 5,826,294

The previous will be deleted as will this post.
I have queried how is it possible to edit a post and instead create a new one?
Gremlins.
But: This is fascinating  maybe hold off on the delete I requested. It is cool to work out what happened?
Edit: I may have done something stupid 



Were multithreaded ones not counted? I didnt realize until after the challenge I had it enabled... my profile shows I did:
Completed tasks 1597
Credit 63,741.97
but the official stat I have 0 for the challenge. 


HonzaVolunteer moderator Volunteer tester Project scientist Send message
Joined: 15 Aug 05 Posts: 1957 ID: 352 Credit: 6,125,686,657 RAC: 2,246,014

You had no completed any SGS tasks during challenge, sorry.
Please, reread the first post, mainly "To participate in the challenge" part
____________
My stats 



OK, thanks. Not sure what I messed up then... :shrug: 

