PrimeGrid challenge #3 Yuri's Night Challenge

[UBT - Mikee]

Hi

The third 2021 PrimeGrid Challenge Series sub-project is from 11-14 April 18:00:00. A short 3 day run on WW - Wieferich and Wall-Sun-Sun Prime Search, which is the last selectable sub-project under preferences.

Been doing a few of these to see how they run.

Both CPU and GPU versions are available for a fixed credit of 12,000 per WU.

Multithreading is recommended as the WUs are long. CPU time on my (average) PC is 380,000 seconds or around 107 hours (4.45 days) for a single CPU core. I've tried 9, 10 and 12 threads and they all return a total CPU time of 107 hours but an actual time of 11.6 hrs, 10.1 hrs and, for 12 threads, about 9 hours per WU. This on a Ryzen 7 1700.

My 3 year old GTX1060s return a time of 72 minutes each.

Doesn't seem to strain the GPU too much as temperature run an average 83 degrees - though a bit warm is normal for my set-up - a fan blow out might be due though! CPU temps are a steady 66 degrees, which is also average for this PC.

Newer, faster CPU/GPU combinations will obviously be different.

As per normal Prime-grid challenges, bunkering is not allowed as only WUs downloaded after the start will be counted.

12 days to the start - let's see if I can remember to post a bump nearer the date.

Mike

[Woodles]

My GPUs should have finished their current project by then, I'll give it a go (If you remind me )

[UBT - Mikee]

From PrimeGrid

PrimeGrid: Yuri's Night Challenge starts April 11th

The third challenge of the 2021 Series will be a 3-day challenge celebrating the 60th anniversary of Yuri Gagarin's history-making venture into outer space. The challenge will be offered on the WW application, beginning 11 April 18:00 UTC and ending 14 April 18:00 UTC.

This is a relatively new subproject here at PrimeGrid, and there are currently no known Wall–Sun–Sun primes! You could be the first to find one!
To participate in the Challenge, please select only the Wieferich and Wall-Sun-Sun Prime Search (WW) project in your PrimeGrid preferences section.
Questions? Queries? Quips? Discuss on the forum thread for this challenge. Best of luck!

Mike

[UBT - Timbo]

Hi Mikee

I'm in, using my GPUs on this...

My CPU's are a bit "old hat" so probably not worth doing these PG CPU tasks, as they might take ages...

regards
Tim

[UBT - Mikee]

Hi

I'll be mostly using CPUs only as the GPUs get a bit hot when both are running at the same time.


Starts 7PM Sunday

Mike

[Woodles]

Just GPUs for me, the CPUs are busy elsewhere (and it'll take too long to configure them correctly for a three day sprint)

Don't seem too demanding, I'm running two at a time on my 1080s and it's just under an hour for two.

[homefarm]

Hi All,

I'm in, running on GPUs and CPUs with all real cores multithreading. CPU give a low reward but it all helps.

1 task per GPU as the tasks use 99% on mine, with almost no direct CPU use.

Good luck all.

[UBT - Mikee]

Hi

Been out most of the day so wasn't here for the start. Going now!

Mike

[Woodles]

One hour in and UBT in equal eleventh place with Richard being the only team member to have returned work that counts!

[UBT - Timbo]

Hi all

Stats are here for individual members:

http://www.primegrid.com/challenge/2021 ... users.html

currently showing:

Code: Select all

Rank	Name			Team		Score		Tasks
8	Homefarm		UK BOINC Team	1 812 000.00	    151
66	Woodles			UK BOINC Team	252 000.00	    21
188	UBT - Mikeejones	UK BOINC Team	24 000.00	    2

out of approx 210

and here for the Team stats:

http://www.primegrid.com/challenge/2021 ... teams.html

Code: Select all

Rank	Team		Score		Tasks
12	UK BOINC Team	2 088 000.00	    174

out of 61 teams

regards
Tim

[Woodles]

Three hours in:

Code: Select all

10	[H]ard|OCP		3 012 000.00	    251
11	L'Alliance Francophone	2 940 000.00	    245

12	UK BOINC Team		2 916 000.00	    243

13	Crunching@EVGA		2 616 000.00	    218
14	BOINC@AUSTRALIA		2 088 000.00	    174

Not too far off catching L'Alliance, reasonably clear of EVGA although I don't have any historical numbers.
and

Code: Select all

  8	Homefarm		2 376 000.00	    198
 51	Woodles			 504 000.00	     42
209	UBT - Mikeejones	  24 000.00	      2
228	UBT - Timbo		  12 000.00	      1

Tim joins the party ... and I think we'll need him just to stop Richard scoring 80% of our points!

[UBT - Timbo]

Tim joins the party ... and I think we'll need him just to stop Richard scoring 80% of our points!

Hi Mark

I've actually been crunching these PG Yuri WW tasks for a day or two...but of course it's only tasks that are downloaded AND returned within the 3 day Challenge period that actually count...which is a shame as I've crunched quite a few of these tasks before the start...

And as you say, each task takes about an hour...but with a quorum of 2, some of my post-6pm UTC tasks are in the pending queue, waiting for validation.

regards
Tim

[homefarm]

And as you say, each task takes about an hour...but with a quorum of 2, some of my post-6pm UTC tasks are in the pending queue, waiting for validation.



Tim, I think you're OK as PG challenges include immediately the valid pending tasks. They are reported every 15 mins.

[Woodles]

Another ten hours and:

Code: Select all

 9	Save The World Real Estates	17 904 000	    1 492
10	AMD Users			16,392,000	    1,366
11	UK BOINC Team			13,956,000	    1,163
12	L'Alliance Francophone		12,984,000	    1,082
13	[H]ard|OCP			12,708,000	    1,059

UBT catch and pass L'Alliance and [H] ... but only go up one place? Someone else must have shot past all three of us.

and

Code: Select all

  9	Homefarm		10,056,000	    838
 39	Woodles			 3,828,000	    319
282	UBT - Timbo		    48,000	      4
299	UBT - Mikeejones	    36,000	      3

Still only four UBT participants
Richard passes the ten million mark but drops to less than 75% of the UBT total, what a slacker

[Woodles]

10AM

Code: Select all

 9	Save The World Real Estates	20,340,000	1,695 (+175 tasks)
10	AMD Users			19,068,000	1,589 (+196)
11	UK BOINC Team			15,852,000	1,321 (+138)
12	L'Alliance Francophone		14,652,000	1,221 (+119)
13	[H]ard|OCP			14,364,000	1,197 (+120)

No change in position, not catching those above but pulling away from those below.

and

Code: Select all

  9	Homefarm		11,376,000	948 (+110 tasks)
 39	Woodles			 4,368,000	364 (+ 45)
284	UBT - Mikeejones	    60,000	  5 (+  2)
295	UBT - Timbo		    48,000	  4 (+  0)

Richard continues to outpace everyone else in the team.
Mikee sneaks in a couple of tasks to leapfrog TIm.

[UBT - Timbo]

Mikee sneaks in a couple of tasks to leapfrog TIm.

Hi Mark

ooops.....I've got 2 hosts with GPUs on this at present...but the office based host was set to "Suspend network activity" and hence had not been contributing to the Challenge at all...

Sorted now, so I might just be able to sneak past Mikee without him noticing ...

But sadly, I don't think I'll be able to hunt you or Richard down in the time remaining, so I might just have to battle Mikee for 3rd place.

regards
Tim

[Woodles]

12 noon

Code: Select all

 9	Save The World Real Estates	22,740,000	1,895 (+200 tasks)
10	AMD Users			21,804,000	1,817 (+228)
11	UK BOINC Team			17,844,000	1,487 (+166)
12	L'Alliance Francophone		16,188,000	1,349 (+128)
13	[H]ard|OCP			16,080,000	1,340 (+143)

No change, everyone above us is returning more work, everyone below us is returning less work.

and

Code: Select all

  9	Homefarm		12,756,000	1,063 (+115 tasks)
 38	Woodles			 4,956,000	  413 (+ 49)
281	UBT - Timbo		    72,000	    6 (+  2)
294	UBT - Mikeejones	    60,000	    5 (+  0)

Richard breaks 1,000 tasks returned, he's running away with it really.
Tim gets his revenge on Mikee, turning into a bit of a scrap

[Woodles]

Hi Tim,

ooops.....I've got 2 hosts with GPUs on this at present...but the office based host was set to "Suspend network activity" and hence had not been contributing to the Challenge at all...

I made the mistake of setting my hosts up early with a one day cache then forgetting to change it before the start. For the first three hours or so I was crunching WU's that weren't eligible for the competition.

Sorted now, so I might just be able to sneak past Mikee without him noticing ...

Well you've caught him, I can't say if he noticed

But sadly, I don't think I'll be able to hunt you or Richard down in the time remaining, so I might just have to battle Mikee for 3rd place.

I don't think any of would have caught Richard anyway, he's in a league of his own

[homefarm]

Hi All,

PG is my primary project and WW has been my main sub-project for a while. I decided I wanted to make WW a “billion” credit task so have been putting a lot into it lately.

As it’s still cold, the office is nice and warm, but I shall cut back soon.

Still busy feeding cows as there’s no grass yet, so the computer is light relief.

[Woodles]

Hi Richard,

That makes sense then although you do have considerable firepower to bring to bear on those poor PG tasks

I know what you mean, yesterday I had the heating on, today I've got all the windows open!

The grass here has a light dusting of snow, bit chilly for your cows