PrimeGrid
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1) Message boards : Number crunching : Tour de Primes 2021 (Message 148755)
Posted 57 days ago by Profile gemini8Project donor
You can hear it if you listen to old Bee Gees stuff:
"Now I found
that the world is round
and of course it rains
everyday."
2) Message boards : Generalized Fermat Prime Search : GFN-1x Small Primes search starts 2021-01-21 (Message 147805)
Posted 81 days ago by Profile gemini8Project donor
Update 1.01 fixed most critical multi-GPU issues, but it'll work only if your cards are of same type (i.e. all NVidia or all ATI). A combo of NVidia+ATI will not work. Correct fix is more complex. Hopefully it'll be done later.

Good luck getting Nvidia to work alongside ATI, that used to be impossible with any project.

Was totally fine on my Win7 machine with GTX 970 in Slot 1 and Radeon 7750 in Slot 2 on several projects, after I stopped running Einstein on the AMD only and my other projects on the Nvidia only.
Especially on PrimeGrid I could run GFN-something on the Nvidia and PPS-Sieve on the AMD. Or different GFNs on both. Or the same ones.
Took the 970 out some time ago, so atm I don't mix GPUs.

So you're saying you usually had to run different projects on each?

I've actually heard of people not being able to get Windows to work with 2 different makes of card, nevermind Boinc, but that was a long time ago, perhaps drivers are better now.

I've got more PCs than cards, so it's easy enough to keep them grouped by similar card.

As I think AMD cards are a PITA on Linux, I put my 7750 into the Windows box that also had a 970.
I used this combo to be able to run Einstein full-time on the Radeon, thus preventing difficulties with the amount of threads used by GPUs.
Most of the time this worked flawlessly. If not, Einstein had forgotten my preferences, and I had to set them anew.
As Einstein would get more out of my Nvidias, I changed my settings at some point in time and let Einstein use Nvidia, but set its GPU work to 0.45 CPU use instead of 1.
Played with venues on several projects and had the 7750 get work from Moo, Collatz, MilkyWay, and sometimes PrimeGrid.
I never had issues with Boinc mistaking cards and having work run on the wrong one.
3) Message boards : Generalized Fermat Prime Search : GFN-1x Small Primes search starts 2021-01-21 (Message 147780)
Posted 82 days ago by Profile gemini8Project donor
Update 1.01 fixed most critical multi-GPU issues, but it'll work only if your cards are of same type (i.e. all NVidia or all ATI). A combo of NVidia+ATI will not work. Correct fix is more complex. Hopefully it'll be done later.

Good luck getting Nvidia to work alongside ATI, that used to be impossible with any project.

Was totally fine on my Win7 machine with GTX 970 in Slot 1 and Radeon 7750 in Slot 2 on several projects, after I stopped running Einstein on the AMD only and my other projects on the Nvidia only.
Especially on PrimeGrid I could run GFN-something on the Nvidia and PPS-Sieve on the AMD. Or different GFNs on both. Or the same ones.
Took the 970 out some time ago, so atm I don't mix GPUs.
4) Message boards : Number crunching : Good Riddance 2020! Challenge (Message 147683)
Posted 85 days ago by Profile gemini8Project donor
That was a heap of fun!
Thanks to all involved!
5) Message boards : Number crunching : Good Riddance 2020! Challenge (Message 147557)
Posted 90 days ago by Profile gemini8Project donor
That's what I think as well.
I mainly use the different venues to adjust the choice of subprojects and number of workunits.
The exact settings are done via app_config.xml.
6) Message boards : Number crunching : Great Conjunction Challenge (Message 147214)
Posted 104 days ago by Profile gemini8Project donor
Fun challenge again!
Thanks a lot to the PrimeGrid team and everyone who took part in this!
Meet you in challenges again in 2021!
7) Message boards : Number crunching : 2021 Challenge Schedule (Message 146632)
Posted 122 days ago by Profile gemini8Project donor
SoB challenge! ♥️

Hooray!

Nice!
8) Message boards : Number crunching : Why are GPU-capable subprojects also run on CPUs? (Message 146520)
Posted 124 days ago by Profile gemini8Project donor
Good morning.
If you can't follow this then I'm at a loss on how to educate you further.

I - and probably everyone who has already participated in this thread - can easily follow your idea, but I don't need to be educated just because I don't have the same opinion.

Mentioning opinions:
There are many Boinc users who divide projects into meaningful and not meaningful ones to decide what they run. Different users have different opinions about which is which btw.
If the Boinc universe only was about efficiently doing meaningful science, there'd be no need for credits or badges as users wouldn't need any sort of thank you, being totally driven by sense, and running helpful Boinc projects would be the most sensible thing to do to everyone on this planet who could afford it.
Also, everyone would run everything not time-critical on ARM because ARM is quite energy-efficient compared to Intel and AMD processors.

And, just to be hilarious, everyone would use Macintosh computers running macOS because those have the best user interface and thus, the best user experience. Well, nearly as good a user interface as the MagiC / Jinnee or MiNT / Jinnee combination on old Atari computers. Erm, stating that I have to correct myself: everyone would use upgraded Atari computers running MagiC or MiNT with Jinnee on top to have the best user experience.
And Windows wouldn't even exist because it was so bad in the beginning that everyone would have easily understood just how unreasonable it is to use it.

Well, I'm old enough to have learned that people aren't that sensible, else we wouldn't face wars, starvation, pollution, Windows and people spreading Corona senselessly by dumb behaviour, just to name a few topics that should instantly be solved by sense and education.

Please read humour as humour while excavating the facts, thank you.
9) Message boards : Number crunching : Magellan 500th Anniversary Challenge (Message 146228)
Posted 128 days ago by Profile gemini8Project donor
Again, thanks a lot for a great challenge!

I'm looking forward to joining the fun on the 21st!
10) Message boards : Number crunching : Why are GPU-capable subprojects also run on CPUs? (Message 146227)
Posted 128 days ago by Profile gemini8Project donor
Well, we*re talking about a project with a scientific goal.
There are people like me who support just about any project that pops up in their known Boinc universe because they want to further science, start to like challenges here and there and throw one machine or a lot of machines at them. Others support one project because it's just their thing, full stop!
If you want your support to be as efficient as possible, you research the projects and their applications, tweak some config files, set different resources for the projects and do whatever you think helps the efficiency.
For me it's a few machines, and my everyday machine is older and slower than those taking part in Boinc.
For people who run Boinc on their personal worker, media player, surfing machine, or what else they are doing with their PET (Personal Electronic Thing, nice labelling by Douglas Adams), the above-mentioned efficiency might not be the best - because it tampers with the PET's responsiveness.
Tweaking everything possible is fine with me, as I use another machine for myself, but imagine someone running Boinc on their PET:
It's nice to have an i7-8700 that runs LLR on all CPU threads (best efficiency for me) and Genefer 21 on the GPU just to push PrimeGrid, while everything else is awfully slow. Oh, wait - that's not nice. Instead it's nice to run Genefer 22 on the GPU (less impact than 21) plus something that does not kill the overall responsiveness as much as LLR. And this something might be a sieve. PrimeGrid had CPU-only sieves, but at the very moment there are none, as there are no sieving goals that can only be achieved without GPU.
Btw.: Sieving is not only better regarding responsiveness on high-end machines - it's also less taxing for the system. So, another use case might be someone who administers a data center or cluster that they want to be doing work so the computers and their cooling run at around the same level all the time to reduce stress on the hardware. Nice job for Boinc and a PrimeGrid sieve, even if it might be done faster by GPUs.

So, there are different users that might want to support PrimeGrid with their own, totally different goals in mind.


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