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World Community Grid Forums
Category: Active Research
Forum: OpenPandemics - COVID-19 Project
Thread: OpenPandemics - COVID-19 on Raspberry Pi |
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Thread Status: Active Total posts in this thread: 35
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Landorin
Cruncher Germany Joined: Apr 28, 2007 Post Count: 31 Status: Offline Project Badges: 
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I built a tower with 12 PI4's. All with heatsinks and 3 120mm fans to keep them all cool. They boot and run diskless off of one of the PI's who serve as boot and fileserver (while crunching itself). This uses in total 66 Watt. 5,5 Watt pr. PI. Each Pi crunches 4 WU's at a time, taking around 9 hours per unit. I have tested a few desktops and laptops, and for OPN1 points per watthour, nothing beats the PI4. Hm at first I thought that would be interesting if one's own electricity prices are rather high. Yet around 8 full results per day? I rent a vserver for almost 3 Euro/month that achieves 11-12 results per day. Seems somewhat cheaper and more effective. Or did I miss something? Okay, in the loong run the hardware at home has paid off (yet there is still the electricity). Haven't done the maths but at least for a year a vserver might be cheaper I suppose. I make the PI4 tower around 130 results per day. Twelve processors with 4 WUs per processor gives 48 threads with 24/9=2.67 WUs per thread day = 128 / day. Yeah but per Pi it would be around 8.x per day from what you wrote. So you'd have to spend the money for all that hardware first to achieve that many results per day. Still an interesting option of course. I guess it comes down on how much one wants to have this installed at home as well as the local electricity prices. Thanks for sharing that data!  |
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KerSamson
Master Cruncher Switzerland Joined: Jan 29, 2007 Post Count: 1684 Status: Offline Project Badges: 
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Hi Bryn Mawr,
----------------------------------------would you be so kind to share references (source, scripts, ...) and maybe some tower pictures as well? Happy crunching. Cheers, Yves |
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Bryn Mawr
Senior Cruncher Joined: Dec 26, 2018 Post Count: 384 Status: Offline Project Badges:
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Hi Bryn Mawr, would you be so kind to share references (source, scripts, ...) and maybe some tower pictures as well? Happy crunching. Cheers, Yves I was just jumping in, the tower is by olebole |
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KerSamson
Master Cruncher Switzerland Joined: Jan 29, 2007 Post Count: 1684 Status: Offline Project Badges:
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@Bryn Mawr: I apologize for the mistake.
----------------------------------------@olebole Would you be so kind to share references (source) and details (setup, scripts, ...) and maybe some pictures as well? Cheers, Yves |
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undertech
Cruncher Joined: Aug 5, 2007 Post Count: 5 Status: Offline Project Badges:
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I've been running since late May last year with a full Pi setup, basically what I have laying around (Pi 1, Pi 2, Pi 3). Pi 3 was already on daily so that was a no brainer, can handle WCG and whatever else it was doing, I just had to underclock it slightly for stability as it is passively cooled.
----------------------------------------Set up the Pi 2 solely for this and tucked it away under the desk next to the router taking power from it's USB port. Done! Same with the Pi 1, this one connected to a network traffic monitor under my bed. I find it amazing that these are so small and so powerful that you can basically tuck them anywhere where there's power and network, so basically anywhere. Requires minimal effort and maintenance... Thinking of upgrading the Pi 3 with a 4 and putting the 3 for WCG only. We'll see. Would love see pics of the Pi tower that's so spoken of here! Happy Pi crunching! [Edit 2 times, last edit by undertech at Mar 17, 2021 6:05:21 PM] |
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