PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

This section is where you can post topics related to Challenges from other websites, such as Formula-BOINC, SETI-Germany and BOINCstats, as well as project challenges such as from WCG, PrimeGrid et al.

As a Team, we really want to engage as many team members with these challenges, as this gives us a great way of attracting more members to our Team...plus we get to show our strengths as a Team by (hopefully) doing well in each one.

PS: I have moved lots of topics into this section where they are relevant...as you can see, we've always been happy to take part in Challenges...and long may that continue ;-)
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UBT - Mikee
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PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Hi

Quick sprint challenge for us while we wait for the next FB sprint

http://www.primegrid.com/forum_thread.php?id=8136

PrimeGrid's 2018 Challenge Series
Solar Eclipse Challenge
Aug 10 18:00:00 to Aug 13 18:00:00 (UTC)

Make sure only Proth Prime Search LLR (PPS) is selected in the preferences.
ATTENTION: The primality program LLR is CPU intensive; so, it is vital to have a stable system with good cooling. It does not tolerate "even the slightest of errors." Please see this post for more details on how you can "stress test" your computer. Tasks on one CPU core will take ~30mins on fast/newer computers and 2+ hours on slower/older computers. If your computer is highly overclocked, please consider "stress testing" it. Sieving is an excellent alternative for computers that are not able to LLR. :)

Highly overclocked Haswell, Broadwell, Skylake, Kaby Lake or Coffee Lake (i.e., Intel Core i7, i5, and i3 -4xxx or better) computers running the application will see fastest times. Note that SR5 is running the latest FMA3 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. If you have a Haswell, Broadwell, Skylake, Kaby Lake or Coffee Lake CPU, especially if it's overclocked or has overclocked memory, and haven't run the new FMA3 LLR before, we strongly suggest running it before the challenge while you are monitoring the temperatures.

Please, please, please make sure your machines are up to the task.


Mike
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

Just as a follow up:

This is a CPU only Challenge, so GPUs won't count towards this Challenges totals.

(Which leaves the GPU free to be crunching for other PrimeGrid tasks or for other projects ;-) )

The Supported platforms:
Windows: 32 bit, 64 bit
Linux: 32 bit, 64 bit
Mac: 32 bit, 64 bit
Deadline: 4 days (up to 30 days)

Recent average CPU time: 1:19:05

Make sure you have selected "Use CPU" wihin your PrimeGrid Preferences on their website, otherwise you won't receive any CPU tasks.


Edit: The Team stats are here:

http://www.primegrid.com/challenge/2018 ... teams.html

And the individual member stats are here:

http://www.primegrid.com/challenge/2018 ... users.html

regards
Tim
UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Hi

Just a reminder that this starts in less than 3 days time.

Mike
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UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Starting soon!
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by bigsinky »

been bunkering PPS LLR work units for this challenge since yesterday with network off. 40 mins or so to go and we should be off to a reasonable start. CPU only so i can keep my GPU occupied with some manual sieving as well. good luck everyone.
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Chris Suddick »

Oh dear. It's only work units downloaded after 1800UTC and completed before the deadline on Sunday that actually count. Bunkering doesn't work for the primegrid challenges.

Chris.
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

I've just enabled my PCs to join in on this PrimeGrid Challenge.

Make sure you only select the "Proth Prime Search LLR (PPS)" tasks and "Allow CPU tasks" within the PrimeGrid Preferences.

I've just got a few tasks and all seems well.

3 days of solid crunching and with luck we'll do well :-)

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Chris Suddick »

After two and a half hours we're 44th out of 49 but I'm sure it will get better.

One thing I've noted though is that although only 1 of my 4 currently reported tasks has been validated by my wingman I have been credited for all four workunits in the challenge table.

Chris.
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by bigsinky »

well that was a waste of time. aborted over 300 WUs and downloaded some more. i wondered why i couldn't see my name on the list
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

I've posted the links to the stats for this Challenge in the 2nd posting on this thread.

For now, here's where we stand (as of 07:45 this morning):

Code: Select all

Posn	Team			Credits
15	Ukraine			93189.68
16	GPU Users Group		73422.69
17	Canada			71030.15
18	Noobs Of Kryta [NOOB]	66075.23
19	BOINCstats		63499.94

20	UK BOINC Team		59516.58

21	L'Alliance Francophone	57937.47
22	San Francisco		56504.67
23	BOINC@Denmark		48364.55
Member wise we have the following participants listed:

Code: Select all

90	UBT - Timbo		UK BOINC Team	27601.83
152	bigsinky		UK BOINC Team	12447.95
159	UBT - Mikeejones	UK BOINC Team	11809.68
202	UBT - Chris Suddick	UK BOINC Team	4464.79
223	LupusUK			UK BOINC Team	2553.92
295	Gordon Lack		UK BOINC Team	319.26
297	meddy2065		UK BOINC Team	319.16
regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

UBT - Chris Suddick wrote: Fri Aug 10, 2018 9:41 pm After two and a half hours we're 44th out of 49 but I'm sure it will get better.

One thing I've noted though is that although only 1 of my 4 currently reported tasks has been validated by my wingman I have been credited for all four workunits in the challenge table.

Chris.
Hi Chris

That seems strange - I have 50 odd tasks validated and credited and 126 that haven't been validated or issued with credits yet.

The quorum is set at 2, so, until the wingman returns a validated task, I didn't think credit would be awarded.

Credits seem to be about 160 per validated task and the tasks I've returned ths far seem to be taking about 7,200 seconds each (around 2 hours) though some have taken just over 6,000 seconds.

I looked into this and found some other members who have the same 32 core Xeon PC and they were completing the tasks in half the time AND their PC's are reported as being only 16 core.

On further investigation it appears that these PPS (LLR) tasks might crunch better if run on physical cores and NOT virtual cores....so, try switching off your PC and go into the BIOS and turn off virtualisation, and see if you complete a task in half the time after it reboots !!

(Caveat: Of course, it's a close run thing as to whether it is better to run 2 tasks on one physical core (ie 2 virtual cores) in twice the time, or run 1 task on 1 physical core in half the time. So, feel free to try it, if you want. )

There's some info in this thread where PG members are quoting their results with HT on and HT off:

http://www.primegrid.com/forum_thread.php?id=8136

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Chris Suddick »

Tim,

I've just checked my stats and, according to John's stats I have a score of 1700ish which corresponds to the 11 validated tasks that I have. My score in the competition is about 5100 which corresponds well with the 33 tasks that I have completed. I do believe the competition credits you before the wingman returns their work but your normal account will have to wait as normal.

Chris.
UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

UBT - Timbo wrote: Sat Aug 11, 2018 9:18 am
UBT - Chris Suddick wrote: Fri Aug 10, 2018 9:41 pm After two and a half hours we're 44th out of 49 but I'm sure it will get better.

One thing I've noted though is that although only 1 of my 4 currently reported tasks has been validated by my wingman I have been credited for all four workunits in the challenge table.

Chris.
Hi Chris

That seems strange - I have 50 odd tasks validated and credited and 126 that haven't been validated or issued with credits yet.

The quorum is set at 2, so, until the wingman returns a validated task, I didn't think credit would be awarded.

Credits seem to be about 160 per validated task and the tasks I've returned ths far seem to be taking about 7,200 seconds each (around 2 hours) though some have taken just over 6,000 seconds.

I looked into this and found some other members who have the same 32 core Xeon PC and they were completing the tasks in half the time AND their PC's are reported as being only 16 core.

On further investigation it appears that these PPS (LLR) tasks might crunch better if run on physical cores and NOT virtual cores....so, try switching off your PC and go into the BIOS and turn off virtualisation, and see if you complete a task in half the time after it reboots !!

(Caveat: Of course, it's a close run thing as to whether it is better to run 2 tasks on one physical core (ie 2 virtual cores) in twice the time, or run 1 task on 1 physical core in half the time. So, feel free to try it, if you want. )

There's some info in this thread where PG members are quoting their results with HT on and HT off:

http://www.primegrid.com/forum_thread.php?id=8136

regards
Tim
Hi

I noticed that my PC was running slower than expected on these. Just compared mine (Prime 370-pro with Ryzen 7 1700) with someone else that had a similar setup and they were at least 3 times quicker. I also noticed they had 8 processors rather than my 16. I've just turned off SMT in 'BIOS' and will let it run for a few hours to see if there's a discernable differance in running times.

Mike
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

UBT - Chris Suddick wrote: Sat Aug 11, 2018 11:07 am Tim,

I've just checked my stats and, according to John's stats I have a score of 1700ish which corresponds to the 11 validated tasks that I have. My score in the competition is about 5100 which corresponds well with the 33 tasks that I have completed. I do believe the competition credits you before the wingman returns their work but your normal account will have to wait as normal.

Chris.
Hi Chris

Something strange is going on.

I've just looked up my stats on Johns website and sure enough I seem to have only earned 14,204 credits. But, as per the stats I mentioned earlier, PG claims I had earned 27,601 and checking the PG Challenge stats, their 11:15am update shows I have: 38295.23 credits.

I've completed 91 tasks which have validated - so 91 * 160 = 14,400 - so that's about right

But then: (149+91) * 160 = 38,400.

One presumes that due to the short length of the Challenge (and the fact that some tasks might not be returned by a wingman in time) that maybe credits for the Challenge are being awarded (once they are returned) and it is assumed that they will be validated.

(Of course if they are not then, any relevant credits will be deducted in due course, I assume).

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all,

Some stats correct as of 15:45 today:

Code: Select all

Posn	Team			Credits
16	GPU Users Group		119601.46
17	Canada			115291.61
18	BOINCstats		108526.18

19	UK BOINC Team		106450.43

20	Noobs Of Kryta [NOOB]	106340.00
21	L'Alliance Francophone	101397.47
22	San Francisco		89580.18
and team member contributions:

Code: Select all

87	UBT - Timbo		UK BOINC Team	49149.77
144	bigsinky		UK BOINC Team	22821.04
155	UBT - Mikeejones	UK BOINC Team	20277.52
227	UBT - Chris Suddick	UK BOINC Team	7016.37
252	LupusUK			UK BOINC Team	3512.52
287	duncanr			UK BOINC Team	1437.85
289	meddy2065		UK BOINC Team	1437.05
340	Paul Griffin		UK BOINC Team	479.06
366	Gordon Lack		UK BOINC Team	319.26
regards
Tim
UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Hi

Well, switching off multithreading has made a difference! WUs are now running at just over 1 hour, before they were around 3 hours, a 33% increase and a bonus in that the CPU temperature has dropped 10 degrees to less than 70. Might leave it off and see if it makes a difference with other projects later on.

Mike
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UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Hi

Stats as at 10:55

Code: Select all

Posn	Team			Credits
17	GPU Users Group		221515.00
18	BOINC@AUSTRALIA		214832.37
19	Canada			213527.66
20	UK BOINC Team		213182.98
21	BOINCstats		209071.01
22	Noobs Of Kryta [NOOB]	195770.81
23	Alien Prime Cult	170912.39
24	Picard			169737.48
and team member contributions:

Code: Select all

85	UBT - Timbo		UK BOINC Team	104283.25
144	bigsinky		UK BOINC Team	44047.13
151	UBT - Mikeejones	UK BOINC Team	41232.53
245	UBT - Chris Suddick	UK BOINC Team	13395.35
252	LupusUK			UK BOINC Team	7031.80
307	Paul Griffin		UK BOINC Team	3839.21
331	meddy2065		UK BOINC Team	2396.04
333	duncanr			UK BOINC Team	2236.76
366	Gordon Lack		UK BOINC Team	319.26
Mike
Last edited by UBT - Mikee on Sun Aug 12, 2018 1:46 pm, edited 1 time in total.
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi MIke

Actually, as of 11:15am this morning my stats were:

Code: Select all

84	UBT - Timbo	UK BOINC Team	104123.28
So, methinks you've edited my stats from yesterday and not updated mine !!!!


Team-wise, it looks like we are in a 3-way tussle with Canada and BOINCstats...we're leading them at the moment but it might be tight to hold onto 19th spot (where we are now !!).

regards
Tim
UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

UBT - Timbo wrote: Sun Aug 12, 2018 12:35 pm

Code: Select all

84	UBT - Timbo	UK BOINC Team	104123.28
So, methinks you've edited my stats from yesterday and not updated mine !!!!
Hi

Oops - caught out :oops: changed now.

Mike
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UBT - Mikee
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Hi

Just got one of these!


Dear Primefinder,

Congratulations! Our records indicate that a computer registered by you has found a unique prime number. This computer is running BOINC, is attached to the PrimeGrid project, and is assigned to the Proth Prime Search. What makes this prime unique is that it's large enough to enter the Top 5000 List in Chris Caldwell's The Largest Known Primes Database.

Since you have auto-reporting selected, the following prime was submitted on your behalf:

Added 125538 : 807*2^2625044+1 (790220 digits)

This prime was found on this workunit which will automatically show as a prime result after verification by the Largest Known Primes Database.

If you have any questions or concerns, please contact us and we will surely resolve any problems.

Once again, congratulations on your find! Thank you for participating in PrimeGrid.

PrimeGrid staff
Mike
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Chris Suddick »

Nice one, Mike. Makes it all seem worthwhile.

Chris.
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

UBT - Mikee wrote: Sun Aug 12, 2018 2:12 pm Hi

Just got one of these!

Dear Primefinder,

Congratulations! Our records indicate that a computer registered by you has found a unique prime number. This computer is running BOINC, is attached to the PrimeGrid project, and is assigned to the Proth Prime Search. What makes this prime unique is that it's large enough to enter the Top 5000 List in Chris Caldwell's The Largest Known Primes Database.

Since you have auto-reporting selected, the following prime was submitted on your behalf:

Added 125538 : 807*2^2625044+1 (790220 digits)

This prime was found on this workunit which will automatically show as a prime result after verification by the Largest Known Primes Database.

If you have any questions or concerns, please contact us and we will surely resolve any problems.

Once again, congratulations on your find! Thank you for participating in PrimeGrid.

PrimeGrid staff
Mike
:happy-wavemulticolor: :text-bravo: :techie-computer:

Well done Mike.

I'm pretty sure no one on the Team has done this recently...but I could be wrong...


Edit: Two members have achieved this but some time ago:

UBT - bobuk in 2011

http://www.ukboincteam.org.uk/newforum/ ... 49&p=76312

and NaRyan in 2009

http://www.ukboincteam.org.uk/newforum/ ... 68&p=48812


regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

The stats as of 19:00 UTC tonight and this is where we are:

Code: Select all

16	L'Alliance Francophone	308334.87
17	BOINC@AUSTRALIA		291201.35
18	GPU Users Group		276300.04

19	UK BOINC Team		270281.90

20	BOINCstats		269898.49
21	Canada			263026.05
22	Noobs Of Kryta [NOOB]	243347.32
So, we are still in 19th place :-)

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Mikee »

Hi

Err...

It's still going! Doesn't finish 'til tomorrow!

Mike
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Chris Suddick »

We're down to 21st place now with just under 8 hours to go.

Chris
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

UBT - Mikee wrote: Sun Aug 12, 2018 9:21 pm Hi

Err...

It's still going! Doesn't finish 'til tomorrow!

Mike
Hi Mike

Big OOOPS !! I hadn't read the end date correctly and just assumed it was a Sprint and ending on a Sunday !!

Posting now corrected above.

And I've re-enabled PrimeGrid on my PCs...hence why our hourly credits were lower, as they stopped getting new PG tasks about 8pm last night . Not sure if the 6 hours of crunching that's left is enough for us to overtake any other team.

The deficit is as follows:

Code: Select all

19	GPU Users Group		373323.44
20	Canada			355394.91

21	UK BOINC Team		347412.15

22	Noobs Of Kryta [NOOB]	327692.33
23	Alien Prime Cult	319362.22
We're about about 8,000 credits behind Canada - or 50 tasks (@160 credits per task). With the 36 cores at my disposal, that should be easy to make up :whistle: We need another 18,000 to re-take 19th place. :oops:

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

As of 13:00 (UTC) we're falling back a bit on our credits total:

Code: Select all

Posn.	Team			Credits
19	GPU Users Group		378780.79
20	Canada			360529.25

21	UK BOINC Team		350611.97

22	Noobs Of Kryta [NOOB]	331705.20
23	Alien Prime Cult	325300.95
The gaps have now increased to 10,000 and 28,000 :-(

So, keep on crunching until 18:00 UTC (or 7pm BST in old money !!)

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

2pm UTC stats:

Code: Select all

Posn.	Team			Credits
19	GPU Users Group		384876.08
20	Canada			365822.26

21	UK BOINC Team		359110.98

22	Noobs Of Kryta [NOOB]	337319.11
23	Alien Prime Cult	331717.03
The gap is closing ;-)

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

As of 4pm UTC:

Code: Select all

Posn.	Team			Credits
19	GPU Users Group		396594.85
20	Canada			376737.36

21	UK BOINC Team		365993.42

22	Noobs Of Kryta [NOOB]	345345.92
23	Alien Prime Cult	343114.70
Gaps now 12,000 and 31,000 and just 2 hours left.

I've added about 11,000 credits since I saw Mikees post earlier, but it might not be enough to help grab at least 20th place.

But you never know.

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

Stats as of 16:45 UTC:

Code: Select all

Posn. Team			Credits
19	GPU Users Group		401250.10
20	Canada			380430.39

21	UK BOINC Team		371928.47

22	Noobs Of Kryta [NOOB]	349841.51
23	Alien Prime Cult	348572.53
Gap to 20th now 8,500 and gap to 19th, now 30,000 :-(

Not long to go now !

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

Stats as of 18:00 UTC:

Code: Select all

Posn.	Team			Credits
19	GPU Users Group		408152.18
20	Canada			387974.62

21	UK BOINC Team		376568.62

22	Alien Prime Cult	356438.66
23	Noobs Of Kryta [NOOB]	355781.80
Looks like we fell short of 20th place by about 11,406 credits (equivalent to about 71 tasks, or about 4 hours of crunching from 36 cores :-( )

And 31,568 short of 19th place - which is about 200 tasks, or about 12 hours of crunching from the same 36 cores - which is more relevant as my PCs weren't crunching PrimeGrid for about 18 hours.

Next time I'll pay more attention to the ending time - promise !!

regards
Tim
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Re: PrimeGrid's 2018 Challenge Series Solar Eclipse Challenge

Post by UBT - Timbo »

Hi all

Team member contributions:

Code: Select all

Posn.	Name			Team		Credits
99	UBT - Timbo		UK BOINC Team	161940.97
147	bigsinky		UK BOINC Team	83152.83
151	UBT - Mikeejones	UK BOINC Team	80675.32
262	UBT - Chris Suddick	UK BOINC Team	22964.16
308	LupusUK			UK BOINC Team	11199.00
320	Paul Griffin		UK BOINC Team	8645.66
359	duncanr			UK BOINC Team	3675.58
360	meddy2065		UK BOINC Team	3674.92
545	Phil Warn		UK BOINC Team	320.92
576	Gordon Lack		UK BOINC Team	319.26
A total of 639 members of Prime Grid actually took part.

Well done to everyone who contributed.

regards
Tim
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