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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Welcome to PrimeGrid's Birthday/Summer Solstice Challenge
PrimeGrid's Challenge series continues with the "Birthday/Summer Solstice Challenge". We are celebrating PrimeGrid's 5th birthday!!! Therefore, a 5 day Challenge is being offered on PrimeGrid's The Riesel Problem (Sieve) application. The celebration will culminate in the ancient observation of the Summer Solstice, 21 June!
PrimeGrid has come a long ways in the past 5 years. For general background information, please visit PG History. For a list of accomplishments, please visit PG Milestones & Significant Primes.
To participate in the Challenge, please select only the TRP (Sieve) project in your PrimeGrid preferences section. The Challenge will begin 16 June 2010 11:28 UTC and end 21 June 2010 11:28 UTC. Application builds are available for MacIntel, Linux 32 & 64 bit and Windows 32 & 64 bit. Note: 64 bit builds benefit from a 1.7X speed advantage over 32 bit...so 1.7X the credit. :)
NOTE: In your PrimeGrid preferences section, set "Send work from any subproject if selected projects have no work" to no to guarantee that no other work will be sent.
Recommendation: The TRP (Sieve) application requires a one time download of a 35MB sieve file. Please consider running a few TRP (Sieve) WU's before the Challenge begins so your client will already have the sieve file. This way, bandwidth can be used to deliver WU's instead of the sieve file. :) Thank you!
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 to the left of the countdown clock.
Scoring Information
Scores will be kept for individuals and teams. Only work units issued AFTER 16 June 2010 11:28 UTC and received BEFORE 21 June 2010 11:28 UTC will be considered for credit. Since this is a fixed credit project, we'll be using cobblestones for scoring.
About the Riesel Problem
Hans Ivar Riesel (born 1929 in Stockholm) is a Swedish mathematician. In 1956, he showed that there are an infinite number of positive odd integer k's such that k*2^n-1 is composite (not prime) for every integer n>=1. These numbers are now called Riesel numbers. He further showed that k=509203 was such one.
It is conjectured that 509203 is the smallest Riesel number. The Riesel problem consists in determining that 509203 is the smallest Riesel number. To show that it is the smallest, a prime of the form k*2^n-1 must be found for each of the positive integer k's less than 509203. As of July 2008, there remains 64 k's for which no primes have been found. They are as follows:
2293, 9221, 23669, 31859, 38473, 40597, 46663, 65531, 67117, 74699, 81041, 93839, 97139, 107347, 121889, 123547, 129007, 141941, 143047, 146561, 161669, 162941, 191249, 192971, 206039, 206231, 215443, 226153, 234343, 245561, 250027, 252191, 273809, 304207, 315929, 319511, 324011, 325123, 327671, 336839, 342847, 344759, 353159, 362609, 363343, 364903, 365159, 368411, 371893, 384539, 386801, 397027, 398023, 402539, 409753, 415267, 428639, 444637, 470173, 474491, 477583, 485557, 494743, 502573
For a more detailed history and status of the Riesel problem, please visit Wilfrid Keller's The Riesel Problem: Definition and Status.
Additional Information
The Riesel problem is to k*2^n-1 as the Sierpinski problem is to k*2^n+1. There is no equivalent to the 'prime' Sierpinski problem since k=509203, the conjectured smallest Riesel number, is prime.
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. :)
Ubuntu has a power save feature that throttles the CPU frequency down to save power. It does not treat BOINC as an active program so will throttle down thus causing under-performance. For those downloading the latest Ubuntu 9.10 (http://www.ubuntu.com/), please follow these directions to make sure the frequency is not throttled down while BOINC is running:
1. In Ubuntu, right click the top menu bar
2. Select add to panel
3. Select "CPU Frequency Scaling Monitor"
4. Click add
This will add a processor icon to the top menu. Click on the icon and set to "Performance". This also allows you to see the CPU frequency.
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Sysadm@Nbg Volunteer moderator Volunteer tester Project scientist
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Joined: 5 Feb 08 Posts: 1158 ID: 18646 Credit: 408,015,260 RAC: 60,483
                    
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Hej @ all
I am on holiday, but my CPUs have to work, because they do not work enough last month ;)
So count me in this challenge (if my tested scripting works fine ...)
Am I right: new sieve-file is 'TRP_20100604.sieveinput' ??
if not, my CPUs will ask the server on June 16 ...
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Sysadm@Nbg
my current lucky number: 3651*2^1521717+1
PSA-PRPNet-Stats-URL: http://u-g-f.de/PRPNet/
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Am I right: new sieve-file is 'TRP_20100604.sieveinput' ??
This is the current file which will be used for the Challenge.
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I prepared myself for the challenge and swaped the lone Xeon E5405 of this client for two Xeon L5408. This is now my fastest client and the power only rose from 135 W to 155 W under full load. Let the challenge begin!
Core 7: +58.0°C (high = +74.0°C, crit = +100.0°C)
Core 6: +65.0°C (high = +74.0°C, crit = +100.0°C)
Core 5: +49.0°C (high = +74.0°C, crit = +100.0°C)
Core 4: +57.0°C (high = +74.0°C, crit = +100.0°C)
Core 3: +51.0°C (high = +74.0°C, crit = +100.0°C)
Core 2: +55.0°C (high = +74.0°C, crit = +100.0°C)
Core 1: +57.0°C (high = +74.0°C, crit = +100.0°C)
Core 0: +63.0°C (high = +74.0°C, crit = +100.0°C)
Ch. 0 DIMM 0: +61.0°C (low = +74.5°C, high = +124.0°C)
Ch. 1 DIMM 0: +57.0°C (low = +74.5°C, high = +124.0°C) |
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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How to Join the Challenge
To participate in the Challenge, please select only the TRP (Sieve) project in your PrimeGrid preferences section. Also, set "Send work from any subproject if selected projects have no work" to no to guarantee that no other work will be sent. The challenge will begin 16 June 2010 11:28 UTC and end 21 June 2010 11:28 UTC.
Application builds are available for the following:
- Microsoft Windows (98 or later) running on an Intel x86-compatible CPU
- Microsoft Windows running on an AMD x86_64 or Intel EM64T CPU
- Linux running on an Intel x86-compatible CPU
- Linux running on an AMD x86_64 or Intel EM64T CPU
- Mac OS 10.4 or later running on Intel
- Mac OS 10.5+ running on an Intel 64-bit CPU
Note: 64 bit builds benefit from a 1.7X speed advantage over 32 bit...so 1.7X the credit. :)
Recommendation: The TRP (Sieve) application requires a one time download of a 35MB sieve file. Please consider running a few TRP (Sieve) WU's before the Challenge begins so your client will already have the sieve file. This way, bandwidth can be used to deliver WU's instead of the sieve file. :) Thank you!
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 to the left of the countdown clock.
Scoring Information
Scores will be kept for individuals and teams. Only work units issued AFTER 16 June 2010 11:28 UTC and received BEFORE 21 June 2010 11:28 UTC will be considered for credit. Since this is a fixed credit project, we'll be using cobblestones for scoring.
Stats will be available on the front page next to the clock within 30 minutes after the start.
What to expect at Challenge start
The server always gets hit hard at the beginning of the Challenge. However, we will be using the same procedure that we used last year for all the Challenges which proved very successful. A few hours before the start (16 June 2010 11:28 UTC) "max cache" will be dropped to 16 tasks per core. Additionally, "max to send" will be dropped to 8 tasks per core. Anyone attempting to request more will be met with "max cache" messages.
We'll raise the buffer to at least 50K. At the start of the Challenge, these settings will be adjusted as necessary. Afterwards, as conditions allow, we'll raise "max cache". We'll continue to increase "max cache" when the server can handle it until a full 5 days max cache is possible.
This method allows the greatest opportunity for the most clients to get work. Even if it's just 1 task for the first 5 minutes, at least the client is crunching. Past Challenges have shown that clients have an excellent chance to reach "max cache" before their first task is complete. We expect the same this time.
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 PPS (LLR)
-At Challenge start, update PrimeGrid preferences and only select TRP (Sieve) project
-At worse, you'll only be 1 PPS (LLR) WU late on each core starting the Challenge.
-After all machines have work, increase Maintain enough work for an additional
- large farm, user NOT able to be present at start
-Same settings as above.
-At worse, you'll only be 1 WU late on each core starting the Challenge.
- a few computers, user can be present at start
-Change PrimeGrid preferences and only select TRP (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
-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 and only select TRP (Sieve) project
-At worse, you'll only be 1 WU late on each core starting the Challenge.
NOTE: This presumes you have all other BOINC projects suspended.
Best of Luck to everyone!
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Recommendation: The TRP (Sieve) application requires a one time download of a 35MB sieve file. Please consider running a few TRP (Sieve) WU's before the Challenge begins so your client will already have the sieve file. This way, bandwidth can be used to deliver WU's instead of the sieve file. :) Thank you!
You may end up with 2 sieve file downloads because currently there are some resends in the queue.
I switched my main cruncher to TRP sieve yesterday evening and it downloaded 2 sieve files. First it downloaded the "short" new one and a few minutes ago the older version:
user@host:~/BOINC/projects/www.primegrid.com$ ls -lh TRP_2010*
-rw-r--r-- 1 user group 45M 2010-06-12 09:09 TRP_20100505.sieveinput
-rw-r--r-- 1 user group 35M 2010-06-11 19:13 TRP_20100604.sieveinput
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Special Attention
This is a reminder to connect to the TRP (Sieve) project early and do at least 1 task so you can have the latest sieve file. However, as mentioned in the previous post, resends using the previous sieve file are still there. We hope to have most of these completed before the start of the Challenge.
Speaking of start, please make a special note of the start time: 16 Jun 11:28 UTC. This is different from the normal start time of 18:00 UTC. This allows the Challenge to finish on the Summer Solstice.
Best of Luck to everyone!
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Special Attention
This is a reminder to connect to the TRP (Sieve) project early and do at least 1 task so you can have the latest sieve file. However, as mentioned in the previous post, resends using the previous sieve file are still there. We hope to have most of these completed before the start of the Challenge.
Speaking of start, please make a special note of the start time: 16 Jun 11:28 UTC. This is different from the normal start time of 18:00 UTC. This allows the Challenge to finish on the Summer Solstice.
Best of Luck to everyone!
18:00 UTC is much better, cannot start earlier ^^
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Well the time is perfect for me as I will be home about 15 minutes before the start time.
I just wonder why the time shown in the stats data is 11 - 12 minutes faster than real time. Does this mean I should start ten minutes earlier, or, can you match up to a handy atomic clock somewhere?
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I guess I'll be setting the old alarm clock to 04:15Quebec (California time) to turn on work download: sigh. Yup, 18:00Zulu is definitely better, solstice or not.
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RytisVolunteer moderator Project administrator
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Joined: 22 Jun 05 Posts: 2639 ID: 1 Credit: 20,748,894 RAC: 2
                    
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I just wonder why the time shown in the stats data is 11 - 12 minutes faster than real time. Does this mean I should start ten minutes earlier, or, can you match up to a handy atomic clock somewhere?
I just synced the time on server, thanks!
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I hope there will be a lot more work available when the challenge starts. I have a lot of cores waiting for work. Even today in my prep-work to download the sieve-files most of my computers get the "No work available for the application.."
Good luck everyone ! |
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Even today in my prep-work to download the sieve-files most of my computers get the "No work available for the application.."
Good luck everyone !
I think there is no need to download on every host, just download once and copy it over to all your hosts, that is what i have done. |
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I hope there will be a lot more work available when the challenge starts. I have a lot of cores waiting for work. Even today in my prep-work to download the sieve-files most of my computers get the "No work available for the application.."
Good luck everyone !
Make sure you leave some for the rest of us!
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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9 hours until the start of the Birthday/Summer Solstice Challenge
It's time to make those final adjustments for the start of the Challenge. If everyone manages to download the sieve file in advance, we should have a pretty smooth start. Therefore, please spread the word about downloading the file before the start.
Once again review the "Welcome" post as well as the "How to Join" post so you can be informed and make any last minute adjustments that are necessary.
A few hours before the Challenge, we begin to monitor the Meebo chat room at the bottom of the forum page. If at any time PrimeGrid becomes unresponsive, you can still access the Meebo chat room externally here: http://www.meebo.com/room/primegrid/
Before the start, the Subproject stats on the Server Status page will be disabled as will the 24 hour stats on the bottom of the front page. Also, the Top Primes Finder page will be disabled. This is all done to free up as much resources to allow the server to send and receive work.
What to expect at Challenge start
Recommendation: The TRP (Sieve) application requires a one time download of a 35MB sieve file. Please consider running a few TRP (Sieve) WU's before the Challenge begins so your client will already have the sieve file. This way, bandwidth can be used to deliver WU's instead of the sieve file. :) Thank you!
The server always gets hit hard at the beginning of the Challenge. However, we will be using the same procedure that we used last year for all the Challenges which proved very successful. A few hours before the start (16 June 2010 11:28 UTC) "max cache" will be dropped to 16 tasks per core. Additionally, "max to send" will be dropped to 8 tasks per core. Anyone attempting to request more will be met with "max cache" messages.
We'll raise the buffer to at least 50K. At the start of the Challenge, these settings will be adjusted as necessary. Afterwards, as conditions allow, we'll raise "max cache". We'll continue to increase "max cache" when the server can handle it until a full 5 days max cache is possible.
This method allows the greatest opportunity for the most clients to get work. Even if it's just 1 task for the first 5 minutes, at least the client is crunching. Past Challenges have shown that clients have an excellent chance to reach "max cache" before their first task is complete. We expect the same this time.
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 PPS (LLR)
-At Challenge start, update PrimeGrid preferences and only select TRP (Sieve) project
-At worse, you'll only be 1 PPS (LLR) WU late on each core starting the Challenge.
-After all machines have work, increase Maintain enough work for an additional
- large farm, user NOT able to be present at start
-Same settings as above.
-At worse, you'll only be 1 WU late on each core starting the Challenge.
- a few computers, user can be present at start
-Change PrimeGrid preferences and only select TRP (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
-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 and only select TRP (Sieve) project
-At worse, you'll only be 1 WU late on each core starting the Challenge.
NOTE: This presumes you have all other BOINC projects suspended.
Best of Luck to everyone!
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Lol, you math guys even make fun complicated! |
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Michael Goetz Volunteer moderator Project administrator Project scientist
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Joined: 21 Jan 10 Posts: 12091 ID: 53948 Credit: 164,967,069 RAC: 155,219
                        
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Got some weirdness here:
The first WUs I got had a deadline of the 23rd (a duration of 7 days).
Then I got some WUs that had a deadline of the 19th -- these had a duration of 3 days plus an hour and change, not an even multiple of days. Because of the shorter deadline, these went into high-priority mode, pre-empting the others. Blech.
Thinking those might have been non-challenge resends, I aborted those.
Then I got some more with the 23rd.
Then I got some more with the 19th again, and they went into high priority mode.
What's up with the deadlines?
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Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 |
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Exact same situation here. I tossed a few with deadlines of the 19th, only to get some more of the same as well as some June 23rds mixed in. Funky. |
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My guess is that the extra WUs PrimeGrid provided for the challenge got shorter deadlines than the WUs that were already in the queue.
On my quad WUs with numbers less than 300000 (between 289000 and 294000) have the "normal" 7 day deadline and WU with numbers higher 300000 (around 303000) have the "shorter" 3.5 day(?) deadline.
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I'm waiting for the first stats update...
16 Jun 2010 11:30:03 UTC 16 Jun 2010 14:31:35 UTC Completed and validated 10,845.77 10,754.70 94.97 280.00
16 Jun 2010 11:30:02 UTC 16 Jun 2010 14:31:49 UTC Completed and validated 10,872.60 10,783.48 95.23 280.00
16 Jun 2010 11:30:02 UTC 16 Jun 2010 14:31:00 UTC Completed and validated 10,823.21 10,741.30 94.85 280.00
16 Jun 2010 11:30:04 UTC 16 Jun 2010 14:31:49 UTC Completed and validated 10,838.79 10,771.60 95.12 280.00
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My first WU was finished and uploaded 14:11:25 UTC
No stats update?
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Member of Crunching Family
http://crunching-family.at/ |
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What a perfect start! I got up at 4:25AM PDT, changed over all my machines to Primegrid, ready to defeat all comers!!
Then, when I woke of at 11:00AM and checked my stats, I had nothing, nada, zilch. I figured there was no way Rytis and the guys could not update the stats for 7 hours. So I came to the Primegrid site and checked everything out. All my machines were producing work, why wasn't I given credit. I looked and looked until after 20 minutes, I checked on which program I was running.
Alas, I am an Idiot, with a capital "I". I was running PPS LLR not TRP Sieve.
Problem corrected. Did you know it is really hard to kick oneself in the butt??
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I was running PPS LLR not TRP Sieve.
(...)
lol
From the primegrid-preferences:
The Riesel Problem (Sieve)
Summer Solstice Challenge project yes
I too had ppsLLR until right after the challenge-start and than a hard time to change all my clients to another host-venue - but finally i got it right. |
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I'm having a strange problem with my dual core processor since this challenge started. One core is crunching fine but the other is getting computation errors like no other...I've tried shutting down the computer, reseting the project, allowing more memory to be used and putting processor limits to see if I could get both cores to work but still no joy.
Anyone here know of anything else I can try?
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Try - not using the boinc screen saver
http://www.boinc-wiki.info/Unrecoverable_error_for_result_%27%28result%29%27_%28Incorrect_function._%280x1%29_-_exit_code_1_%280x1%29%29
for now, then try to upgrade the graphics drivers
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From the High Desert in New Mexico
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Still unable to use my second core, thanks for the suggestion though...Just makes me mad since it was doing great right up until the challenge then this happens...:( |
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I'm loosing a lot of CPU time because of BOINC manager jumping from 23/06 deadline WUs to 20/06 deadline WUs :(
Am I the only one?
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Michael Goetz Volunteer moderator Project administrator Project scientist
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Joined: 21 Jan 10 Posts: 12091 ID: 53948 Credit: 164,967,069 RAC: 155,219
                        
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I'm having the same problem (see my post above.)
I haven't seen any response from the project about why they're mixing and matching deadline durations, but it's screwing up the scheduling and I sure wish they would stop.
I may need to start micro-managing the tasks and abort every unstarted short duration WU with a short deadline -- that will be the only way to get the partially-completed long duration WUs to finish before the challenge ends.
In fact, I think I will start doing that right now.
EDIT:
Well, that didn't seem to work as the short duration tasks seem to be the only ones being sent out right now. I guess I'll wait a bit for a response from the admins, but I'll eventually abort the unstarted long duration WUs. I guess I'll have to manually suspend the short duration WUs in order to get the already started long duration WUs to finish before the end of the challenge.. That means the cores will run dry if I'm not there to manually start them up again. Oh joy -- let the cores run dry, or waste the crunching already done. Lovely.
BTW, this isn't the admins' fault -- there's no reason the BOINC client should be running these things high priority. It's got plenty of time.
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Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 |
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Ken_g6 Volunteer developer
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Joined: 4 Jul 06 Posts: 845 ID: 3110 Credit: 134,453,352 RAC: 183,167
                      
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On many versions of BOINC, if you suspend and then almost immediately resume a WU, it won't resume right away. If the other work is within some short time of completion (an hour, I think), it will get done before BOINC decides to switch back to the work you suspended.
That trick worked for me on one machine yesterday, anyway.
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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I haven't seen any response from the project about why they're mixing and matching deadline durations, but it's screwing up the scheduling and I sure wish they would stop.
This was an error on our part. We apologize. Since this is a sieve Challenge, there was actually no reason to shorten the deadline from 7 days to 3.5 days.
Although it's no consolation now, the next batch of WU's will have a 7 day deadline. This will at least force all earlier deadline work to be completed first.
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Hi, I am participating in the Summer Solstice Challenge but do not see my user in the participants list. I have the proper project selected and have daily results occurring.
Any idea what i should do or is there a way to audit what is happening on either side of this situation?
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Hi, I am participating in the Summer Solstice Challenge but do not see my user in the participants list. I have the proper project selected and have daily results occurring.
Any idea what i should do or is there a way to audit what is happening on either side of this situation?
I did a quick check and what I can see the validated wu's are downloaded before the challenge started.
"Scoring Information
Scores will be kept for individuals and teams. Only work units issued AFTER 16 June 2010 11:28 UTC and received BEFORE 21 June 2010 11:28 UTC will be considered for credit. Since this is a fixed credit project, we'll be using cobblestones for scoring."
Lennart |
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Ok, thanks.
must be a delay between getting WU results and work completed.
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Doug
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Ok, i had a bunch of WUs assigned before challange.
Corrected the problem. Problem is resolved.
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Doug
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Challenge Update
We are currently sieving at an unheard of rate of approximately 617T per day and it's increasing!!! The depth is currently approaching 5P. It is possible that we could reach 7P by the end of the Challenge!!! Prime search history is being made with this raw sieving power. Thanks!
Additionally, we'll most definitely break the single day credit record of 15.9M cobblestones at PrimeGrid. Yesterday, over 15M was awarded but the rate has been increasing each day. We expect to see a record today.
A HUGE thanks goes out to each and every one of you. These are your records...your accomplishments. Congratulations!!! Now on with the Challenge. :) Best of Luck!
EDIT: The Challenge started around 2.6P. To see if we reach 7P, you can follow progress here: The Riesel Problem (Sieve) - Range statistics
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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New Single Day Credit Record!!!
As expected, a new single day credit record of 18M cobblestones was achieved today surpassing the previous record of 15.9M set during the Winter Solstice Challenge. Kind of a nice symmetry there. :) Additionally, a max of 628T/day was reached...and we're not even half way through the Challenge!
Congratulations and thank you for participating!!!
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Challenge Update
We are currently sieving at an unheard of rate of approximately 617T per day and it's increasing!!! The depth is currently approaching 5P. It is possible that we could reach 7P by the end of the Challenge!!! Prime search history is being made with this raw sieving power. Thanks!
EDIT: The Challenge started around 2.6P. To see if we reach 7P, you can follow progress here: The Riesel Problem (Sieve) - Range statistics
Dumb question or not, but I haven't seen this reference before. 2.6P to 7P range. What does this refer to?
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Hmmm .... getting the following:
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work sent
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: The Riesel Problem (Sieve) needs 14.86MB more disk space. You currently have 461.98 MB available and it needs 476.84 MB.
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work available for the applications you have selected. Please check your preferences on the web site.
PG is already using 120MB, isn't an extra 476.84MB a bit excessive, just to get another WU? |
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Hmmm .... getting the following:
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work sent
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: The Riesel Problem (Sieve) needs 14.86MB more disk space. You currently have 461.98 MB available and it needs 476.84 MB.
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work available for the applications you have selected. Please check your preferences on the web site.
PG is already using 120MB, isn't an extra 476.84MB a bit excessive, just to get another WU?
You only need 14.86MB more disk space.
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Dumb question or not, but I haven't seen this reference before. 2.6P to 7P range. What does this refer to?
These are the range of the factors that the sieve is currently searching for... 2.6P = 2.6 quadrillion (2,600,000,000,000,000). 1P = 1,000T, so when John says we searched 628T in one day, that is the same as 0.6P/day. This is incredibly fast, as evidenced by the fact that all sorts of records are being broken. To put it in perspective, it took 3 months or so to sieve up to 2.6P (TRP Sieve just started here in March), and now we are sieving more than that in just a few days. Of course this speed will go back down to normal levels after the challenge, but it's a very nice boost to the effort.
P = quadrillion = 1,000T
T = trillion = 1,000G
G = billion = 1,000M
M = million
(the letters are based on SI prefixes, Mega, Giga, Tera, and Peta)
I know I've seen better explanations/FAQ's on sieving and terminology somewhere, but I can't seem to find them at the moment. Searching around on PrimeGrid, Mersenneforum, and the Seventeen Or Bust forums would probably turn up something if you are interested. |
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Thanks - I'm used to the SI prefixes but didn't match them to he usage here.
:) |
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Hmmm .... getting the following:
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work sent
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: The Riesel Problem (Sieve) needs 14.86MB more disk space. You currently have 461.98 MB available and it needs 476.84 MB.
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work available for the applications you have selected. Please check your preferences on the web site.
PG is already using 120MB, isn't an extra 476.84MB a bit excessive, just to get another WU?
You only need 14.86MB more disk space.
I know I only need another 14.86MB, but I already have 461.98MB of free disk space and thats a lot more than whats actually needed to run a WU. :) |
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Hmmm .... getting the following:
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work sent
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: The Riesel Problem (Sieve) needs 14.86MB more disk space. You currently have 461.98 MB available and it needs 476.84 MB.
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work available for the applications you have selected. Please check your preferences on the web site.
PG is already using 120MB, isn't an extra 476.84MB a bit excessive, just to get another WU?
You only need 14.86MB more disk space.
I know I only need another 14.86MB, but I already have 461.98MB of free disk space and thats a lot more than whats actually needed to run a WU. :)
Your BOINC preferences are probably configured to limit your disk usage. Look at you Preference settings related to disk and memory usage. Both on the project (Under Your account, "When and how BOINC uses your computer") as well as locally. (Locally it's under Advanced->Preferences->disk and memory usage.) It's either the "Leave at least x Gig free" or "Use at most x% of total disk space." |
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Hmmm .... getting the following:
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work sent
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: The Riesel Problem (Sieve) needs 14.86MB more disk space. You currently have 461.98 MB available and it needs 476.84 MB.
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work available for the applications you have selected. Please check your preferences on the web site.
PG is already using 120MB, isn't an extra 476.84MB a bit excessive, just to get another WU?
You only need 14.86MB more disk space.
I know I only need another 14.86MB, but I already have 461.98MB of free disk space and thats a lot more than whats actually needed to run a WU. :)
It looks like your Hard Disk is a little bit too full. BOINC enforces limits on its disk usage to prevent itself from using up all your free disk space, thereby possibly crashing your computer. These limits are set on your computing preferences page
http://www.primegrid.com/prefs.php?subset=global.
Either free up a little more disk space, or lower the limits slightly.
Hope this helps.
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maybe someone should kick the validator! |
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Hmmm .... getting the following:
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work sent
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: The Riesel Problem (Sieve) needs 14.86MB more disk space. You currently have 461.98 MB available and it needs 476.84 MB.
19/06/2010 1:46:16 PM|PrimeGrid|Message from server: No work available for the applications you have selected. Please check your preferences on the web site.
PG is already using 120MB, isn't an extra 476.84MB a bit excessive, just to get another WU?
You only need 14.86MB more disk space.
I know I only need another 14.86MB, but I already have 461.98MB of free disk space and thats a lot more than whats actually needed to run a WU. :)
Your BOINC preferences are probably configured to limit your disk usage. Look at you Preference settings related to disk and memory usage. Both on the project (Under Your account, "When and how BOINC uses your computer") as well as locally. (Locally it's under Advanced->Preferences->disk and memory usage.) It's either the "Leave at least x Gig free" or "Use at most x% of total disk space."
Nope - Small drive (2GB) - that all thats left. :(
EDIT: I am not needing advice, just wondering why so much free space is required by PG? (Seti, Enigma, MW, Simap and Rosetta also run on the same cruncher at times, and they dont ask for more space). |
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Recommendation: The TRP (Sieve) application requires a one time download of a 35MB sieve file.
You may end up with 2 sieve file downloads because currently there are some resends in the queue.
user@host:~/BOINC/projects/www.primegrid.com$ ls -lh TRP_2010*
-rw-r--r-- 1 user group 45M 2010-06-12 09:09 TRP_20100505.sieveinput
-rw-r--r-- 1 user group 35M 2010-06-11 19:13 TRP_20100604.sieveinput
I am not needing advice, just wondering why so much free space is required by PG? (Seti, Enigma, MW, Simap and Rosetta also run on the same cruncher at times, and they dont ask for more space).
This might be the reason. |
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Recommendation: The TRP (Sieve) application requires a one time download of a 35MB sieve file.
You may end up with 2 sieve file downloads because currently there are some resends in the queue.
user@host:~/BOINC/projects/www.primegrid.com$ ls -lh TRP_2010*
-rw-r--r-- 1 user group 45M 2010-06-12 09:09 TRP_20100505.sieveinput
-rw-r--r-- 1 user group 35M 2010-06-11 19:13 TRP_20100604.sieveinput
I am not needing advice, just wondering why so much free space is required by PG? (Seti, Enigma, MW, Simap and Rosetta also run on the same cruncher at times, and they dont ask for more space).
This might be the reason.
Yes. If you take into consideration that a copy of the sieve input file is created in every slot directory you quickly end up with a few hundred MB of hard drive space occupied like in this case (BOINC decided to put a set of WUs on hold and started a new one):
user@host:~/BOINC$ du -h slots/ | tail -n 1
280M slots/
Now imagine BOINC in panic mode on a i980X crunching PPS sieve tasks with their 233M sieve files...
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This might be the reason.
Yes. If you take into consideration that a copy of the sieve input file is created in every slot directory you quickly end up with a few hundred MB of hard drive space occupied like in this case (BOINC decided to put a set of WUs on hold and started a new one):
user@host:~/BOINC$ du -h slots/ | tail -n 1
280M slots/
Now imagine BOINC in panic mode on a i980X crunching PPS sieve tasks with their 233M sieve files...
Thank You. That does make sense.
But obviously it is a 'blanket' requirement is applied equally to all requests for work from all hosts big or small, and cannot determine if it is not really needed (as in my situation - only 2 cores, both of which were already crunching the only 2 WUs I had at the time)
Also interesting was that when I freed space so I had only a few MB more than the requirement, I was able to DL 6 WUs one at a time to fill my cache. |
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Challenge Update
AMAZING!!!! Just a few minutes ago, we reached a sieving rate for TRP sieve of 1.01P/day and increasing!!! The depth is currently approaching 5.5P.
Again, a HUGE thanks goes out to everyone. These are your records...your accomplishments. Congratulations!!!
You can follow progress here: The Riesel Problem (Sieve) - Range statistics
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If you can, you might consider adding another HD. 2g is 1995 standards. I use at the smallest, a 40GB HD for any system with 2.xx GHz cpu or greater. My main system has a 750GB HD on a Quad CPU system.
When installing an OS, consider using storage that will be 2x larger than the total data installed unless you dont plan to install more software.
For test, i install OS on HDs just big enough to run but that would be for only test purposes.
Probably, you are not living close enough for me to give you a 10Gb HD of which i have many just sitting around.
You might try uninstalling applications that are not needed at the moment to relieve some of the storage space.
having done this for 30 years and with much trial and error, the best rule of thumb on software installations is 2x the size of data :).
Keep up the number crunching anyways if you can.
We are putting our foot down on Team Norway which i suspect the main contributor is using a large file server system or a mock Cray system.
Only way anyone would crunch over 6 mil in this short time.
But Team work with prevail! we caught up and passed them in one day!
Good Job all!!! :D
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Doug
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If you can, you might consider adding another HD.
Umm .... Its a VMWare virtual disk, I could expand it if necessary.
A lot of my crunchers are VMs, just an OS and Boinc, they usually dont need much disk space. :) |
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Where are all the factors found gone in stats? Reduced from 700k to 300k now!
Edit:
Ok, it seems to be fixed :)
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But Team work with prevail!
You make it seem like there is no team work in what Team Norway is doing in the challenge... We've mobilized a lot of our crunchers for this challenge. That one participant outproduces the rest, doesn't make it any less of a team effort! :)
It's been a fun challenge for us so far and I'd like to thank you for letting us have the first place for half the challenge. I'd only wish it was the second half of the challenge! ;D
Keep on crunching!
-opyrt
Team Norway |
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But Team work with prevail!
You make it seem like there is no team work in what Team Norway is doing in the challenge... We've mobilized a lot of our crunchers for this challenge. That one participant outproduces the rest, doesn't make it any less of a team effort! :)
It's been a fun challenge for us so far and I'd like to thank you for letting us have the first place for half the challenge. I'd only wish it was the second half of the challenge! ;D
Keep on crunching!
-opyrt
Team Norway
Team Norway have done a great job, competing at the top of the leader board - gives the other modest sized teams something to watch and work on.
Patrick - Hey I'm a StarFish |
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Preparing for the Final!
With about 8 hours remaining, now would be a good time to start preparing for the end of the Challenge. Please remember to upload early and often. The server is going to get hit hard as the Challenge draws to an end. We have started lowering "max cache" to help with this.
Only work units issued AFTER 16 JUNE 2010 11:28 UTC and received BEFORE 21 JUNE 2010 11:28 UTC will be considered for credit.
For those "moving on" at the conclusion of the Challenge, we ask that you abort your WU's after the end. This helps out greatly with loose WU's lying around waiting to expire. However, if you have the resources, please consider completing the work in your cache before "moving on".
Since this is a sieve Challenge, there is not need for a "clean up" period. Therefore, the results will be final shortly after the conclusion (when the validator has processed all the Challenge WU's).
Good Luck to everyone!
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I got some 19 WUs pending comletion in the next hour before the deadline.
I hope i stay put on 60th place.
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KONIEC!
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Congratulation to all participants and the administration for this nice challenge.
Especially to the incredible shanky123 and team S.USA who fights down Team Norway! This was amazing to see ;)
Unfortunately there will be no interesting finish between mumps and my again. I will stop (not all ;) ) crunching at this level.
Good luck for all of you math freaks an challenge warriors!!
Jörg aka marodeur6
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Well congratulations to you Marodeur6. I guess if you have to stop somewhere, 10 million rocks is a pretty good place to rest!
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Congratulation to all participants and the administration for this nice challenge.
Especially to the incredible shanky123 and team S.USA who fights down Team Norway! This was amazing to see ;)
Unfortunately there will be no interesting finish between mumps and my again. I will stop (not all ;) ) crunching at this level.
Good luck for all of you math freaks an challenge warriors!!
Jörg aka marodeur6
I second that! A job well done by all involved!
You sure made me work hard to make it past you this time Jörg. Maybe I can finally retire some of these 3.2 Ghz P4's. :-)
This has been a very enjoyable challenge. |
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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The results are Final!
The Summer Solstice has arrived in the Northern Hemisphere. So too has the conclusion of the Challenge!!! This will be one Challenge that will go down in the record books. 2.45P of sieve work was crunched in 245K tasks resulting in over 68.5M cobblestones awarded. PrimeGrid's overall (Challenge + regular work) daily record was set with over 19.6M cobblestones for a 24 hour period surpassing the 15.9M record set during last year's Winter Solstice Challenge. Congratulations to everyone...this is an incredible milestone.
The TRP sieve reached an incomplete depth of over 5.84P with a daily rate that reached an unbelievable 1.02P/day at it's peak!!! Almost 250K factors were found. Needless to say, once the dust settles, we'll review if there's a need for a new sieve file as a result of all this work. :)
167 teams and 1298 individuals participated in the Challenge.
The Challenge Points stats will be updated soon. Congratulations to SETI.USA as the top team and shanky123 as the top individual. Remember, the top 100 individual and top 50 team places earn points for this Challenge.
Thank you again to everyone. We appreciate your participation and hope you had fun! Have a wonderful summer and we look forward to seeing you at the next Challenge - The Full Moon Challenge - 25 July - 24 hours on the PPS (LLR) application! Come howl at the moon with us as we bombard the Top 5000 Primes Pages with new primes. It's a GREAT opportunity for you to find one for yourself! Who knows, there may even be the rare Fermat number divisor. :)
Stats: Participants | Teams
Top 10 Teams
1 SETI.USA 10586520.00
2 Team Norway 10008320.00
3 SETI.Germany 7293440.00
4 Sicituradastra. 3414040.00
5 Major Polish Teams Alliance 3220280.00
6 PBToyz 2959040.00
7 Team 2ch 2605120.00
8 BOINC@Poland 2238040.00
9 BOINCstats 1946560.00
10 Ars Technica 1862000.00
Top 10 Individuals
1 shanky123 Team Norway 8662920.00
2 Mr. Hankey SETI.USA 2740640.00
3 JerWA SETI.USA 2591400.00
4 University of the Free State Grid 2481080.00
5 Jeff17 PBToyz 1804040.00
6 Mumps SETI.USA 1235360.00
7 [SG]marodeur6 SETI.Germany 1154720.00
8 whizbang Ars Technica 1058680.00
9 Grzegorz Granowski Major Polish Teams Alliance 1022560.00
10 Scott Brown Duke University 878920.00
Special Note: PPS (LLR) includes both PPS and PPSE work. For the Challenge, only PPSE work will be available. PPSE (LLR) is currently at n=517K. It would be beneficial to advance this as much as possible before the next Challenge so as to ease the load on the server. Please consider heading over there early and help us reach at least n=550K. The higher the n, the less stress on the server.
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I didn't know I was in it but the mighty Aggie The Pew (may her shadow never grow less) came 135th. Thanks for organising. I plan to have a proper go at the PPSE challenge tho'; see if I can do better at that.
Hasta la vista, baby. |
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This was a nice challenge. It's 9:30PM now, the sun is still blinding me, and I'm changing my settings back to the usual mix - bit of sieving, some LLR...
Look at that shiny TRP-badge I got - the 321 one is from the last challenge :D
Happy crunching everyone :) |
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mfbabb2 Volunteer tester
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Joined: 10 Oct 08 Posts: 510 ID: 30360 Credit: 7,739,203 RAC: 6,905
                    
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Is the PPSE (LLR) different from the PPS (LLR)? If so how do we choose it?
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Murphy (AtP)
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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Is the PPSE (LLR) different from the PPS (LLR)? If so how do we choose it?
Sorry for the incomplete information. PPS (LLR) includes both PPS and PPSE work. For the Challenge, only PPSE work will be available. Therefore, all you have to do is select the PPS (LLR) application on your PrimeGrid preferences.
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Is the PPSE (LLR) different from the PPS (LLR)? If so how do we choose it?
Sorry for the incomplete information. PPS (LLR) includes both PPS and PPSE work. For the Challenge, only PPSE work will be available. Therefore, all you have to do is select the PPS (LLR) application on your PrimeGrid preferences.
Will manual PPSE work count towards the challenge? |
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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[Will manual PPSE work count towards the challenge?
Only PPSE work in the BOINC PPS (LLR) application will count towards the Challenge. PRPNet PPSE work will not count.
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Special Note: PPS (LLR) includes both PPS and PPSE work. For the Challenge, only PPSE work will be available. PPSE (LLR) is currently at n=517K. It would be beneficial to advance this as much as possible before the next Challenge so as to ease the load on the server. Please consider heading over there early and help us reach at least n=550K. The higher the n, the less stress on the server.
That's about 1K/day. That's not realistic, John.
Currently the advancement is 0.28K/day.
To avoid server load you should skip the challenge or exclude some monster crunchers :P ;)
A few of them (UL1, marodeur6) retired voluntary. Many thanks to them for all the work they did here @PrimeGrid.
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mfbabb2 Volunteer tester
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Joined: 10 Oct 08 Posts: 510 ID: 30360 Credit: 7,739,203 RAC: 6,905
                    
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Special Note: PPS (LLR) includes both PPS and PPSE work. For the Challenge, only PPSE work will be available. PPSE (LLR) is currently at n=517K. It would be beneficial to advance this as much as possible before the next Challenge so as to ease the load on the server. Please consider heading over there early and help us reach at least n=550K. The higher the n, the less stress on the server.
That's about 1K/day. That's not realistic, John.
Currently the advancement is 0.28K/day.
To avoid server load you should skip the challenge or exclude some monster crunchers :P ;)
A few of them (UL1, marodeur6) retired voluntary. Many thanks to them for all the work they did here @PrimeGrid.
Or, convince the monster crunchers to start now, and maybe n=550K is approachable.
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Murphy (AtP)
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Special Note: PPS (LLR) includes both PPS and PPSE work. For the Challenge, only PPSE work will be available. PPSE (LLR) is currently at n=517K. It would be beneficial to advance this as much as possible before the next Challenge so as to ease the load on the server. Please consider heading over there early and help us reach at least n=550K. The higher the n, the less stress on the server.
I just switched my sub-project preferences for my C2Q over to exclusively PPS LLR from a mix of PPS LLR & TRP (sieve) to help out in advance of the next challenge. Maybe I might get an extra prime or two on the list. This is fun!
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John Honorary cruncher
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Joined: 21 Feb 06 Posts: 2876 ID: 2449 Credit: 2,681,934 RAC: 0
                 
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That's about 1K/day. That's not realistic, John.
Currently the advancement is 0.28K/day.
To avoid server load you should skip the challenge or exclude some monster crunchers :P ;)
A few of them (UL1, marodeur6) retired voluntary. Many thanks to them for all the work they did here @PrimeGrid.
Realistic or not, we'll do our best to reach 550K. The week before the last Challenge we were averaging 1.3K per day. ;)
Although it's an ambitious goal, reaching 550K is not mandatory for a "safe" Challenge. It just helps increase the odds of a smooth start. For the 24 hours of the Challenge, we expect the server to be just fine. However, it may take longer for everyone to reach a full cache at the start.
All help is appreciated between now and then. :)
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I put my dual Xeon L5408 on ppsLLR in addition to my 4 regular hosts.
every little bit should help, more is financially unaffordable for my, and who knows: maybe i find one or another prime until the challenge begins. |
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lol
Had to shut down the host: Summer has finally arrived in Germany. 34°C outside, 28°C right now in the room after the sun has set... We are looking forward to round about 38°C on saturday...
Oh boy...
My stats are showing 13°C for 2010-04-26 and 20°C for 2010-05-29. |
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Shut down most of my home stuff the start of June. It has been 100F here (38c) most of the last week. My air conditioner went out early last week and the house was at 90f (32c) the next day when the guy finally was able to come by and fix it.
S. |
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Its summer here in Texas, and its only 28C outside right now (today's high temp. is supposed to only be 32C, the warmest high forecast over the next 10 days is only 34C). Have the air conditioner set to 25C inside. Its a mild summer here so far. That will probably change soon. Back in May, we had some days over 38C, and my air conditioner decided to break down then. It was brutal in here back then, with inside temps. warmer than 40C.
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I have ~6k/day flowing on this since the last challenge... and I will be hammering the server for all I am worth once the challenge starts. Would you want it any other way... other than of course never taking a breather.. lol?
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