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drummers-lowrise
11) Message boards : Storm message board (Message 153884)
Posted 185 days ago by dthononProject donor
Congratulations, Robish, for you nice new badge !
12) Message boards : Number crunching : Tour de Primes 2022 (Message 153838)
Posted 186 days ago by dthononProject donor

I notice in my signature graphic it says I've completed over 300K of PPS_LLR tasks for 8 hits :(

That is fairly close to my estimate of 7.5 for 250k, so this seems to be the current rate for PPSE.
13) Message boards : Number crunching : Tour de Primes 2022 (Message 153818)
Posted 186 days ago by dthononProject donor
It looks like we are processing 250k PPSE and finding 7.5 primes per day. That would lead, if I am not mistaken :
k 1-q 1 0,00003 10001 0,25921 20001 0,45121 30001 0,59345 40001 0,69882 50001 0,77688 60001 0,83471 70001 0,87755 80001 0,90929 90001 0,93280 100001 0,95022

So for 50 k tasks returning first in a WU, probability of not finding at least one prime is 22%.
14) Message boards : Number crunching : Tour de Primes 2022 (Message 153738)
Posted 188 days ago by dthononProject donor
Had this issue last year with the Tour De Primes.

The only quick solution I could come up with, was to setup 2 instances of BOINC, one for CPU and one for GPU on the same computer.

Cheers

Thanks, I did not know you could do this.
I am going to see how to do this being when you update the software you cannot make changes and only updates what is installed.

What's your "Job Control and Multi-threading" settings in preferences for that venue?

Like on one rig I have 1 GPU and a 10 Core CPU so I set to run 2 Task and have the MT set to 6. This would download 1 GPU task and 1 CPU task, while a GPU task is running and the CPU reports in it then downloads another GPU task and Not a CPU task so I end up with a GPU task waiting to run and no CPU task.

I always roll back to 7.14 for TdP. It's the only way I've found to avoid that work unit sitting there waiting.

This causes all kinds of issues with other BOINC Projects, so it takes a lot of work fixing other projects.


That setting should almost always be left at "no limit". That is probably what is causing your problem.

It's only needed for special circumstances, and pretty much *only* when you're running tasks from multiple projects simultaneously.

I'm the person who added those settings to the PrimeGrid server, and I've never set "max simultaneous" to anything other than "no limit". I've never had the problem you're experiencing.

The purpose of that setting is "I want to run 6 tasks from PrimeGrid and 2 from WCG." It's all but *guaranteed* to fail badly if you're using both CPU and GPU. So don't use it.

I agree, setting "max simultaneous" usualy makes thing worse.
But if someone found an easy way to avoid dowloading tasks in advance, I would be grateful if they could share it. I know that running 2 BOINC instances, one for CPU and the other for GPU, is a way of getting around this issue, but it is not always feasible.
15) Message boards : Storm message board (Message 153457)
Posted 200 days ago by dthononProject donor
It's taking over a day, and now there's a queue as T5K were doing maintenance. I think we're up 28 Mega's found so far in the Challenge.

And quite a few GFN-17-low as well, I guess. All of them are slowly pushing PPSE out of T5K. The coming TdP should be the last where PPSE are still valid, if they even stay in T5K until the end.
16) Message boards : Storm message board (Message 153454)
Posted 200 days ago by dthononProject donor
3000 WUs completed for the challenge, and not even a double check to show for it...

Not better for my nearly 7500 tasks. But they could show up later, as there is a lag of several hours (1 day ?) until prime or DC are notified.
17) Message boards : Generalized Fermat Prime Search : GFN-17-LOW will finish soon (Message 153431)
Posted 201 days ago by dthononProject donor
And then, there were none.
At UTC time 2022-01-19 09:31:16, there were no tasks left, as seen from the home page.
But the min remaining b is 39,603,760 (995,851 digits long), so there seems to be quite a few tasks pending, and cleanup will take several days.
18) Message boards : Generalized Fermat Prime Search : Guess the number of digits in the LAST GFN-17-LOW prime (Message 153382)
Posted 202 days ago by dthononProject donor
Could we place a wager (non-monetary) on who may get it?
Just another level of fun.
I suspect no, but I like the idea of 2 levels of guessing.
To me this makes sense - we have a distribution of guesses that have a range of connection with what may happen.
Now that we have these guesses, we could now guess the result from those options?
This is probably why I shouldn't be near maths.

People whose bets are "sandwiched" by other bets really near, like yourself, need a lot of luck to win! /JeppeSN

But if it happens it would be awesome.
I wish anyone to have guessed correctly - which I think is very unlikely. About 1% chance? I think it is less than that, but as maths and I have a mutual understanding to not get too close, I have no idea how likely it is for someone to have guessed it.

There are around 3 primes per thousand digits, so probability is about 0.3%, if I am not mistaken.
19) Message boards : Number crunching : Heptadecagenarian Challenge (Message 153331)
Posted 203 days ago by dthononProject donor
You just need to process GFN-17 tasks and hope some tasks are reported first.
20) Message boards : Generalized Fermat Prime Search : Guess the number of digits in the LAST GFN-17-LOW prime (Message 153321)
Posted 203 days ago by dthononProject donor
The leading edge is starting to move up the list : 998,059 digits long. But the largest prime : 997,196 digits long, is still smaller than the smallest guess...


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