Posts by Carbon-14

1) Message boards : Number crunching : Raspberry Pi Cluster (Message 101830)
Posted 16 May 2021 by Profile Carbon-14
OK. Thanks for the comments. I eventually got the Pi cluster up and running. Being a new user of Linux and Docker, I'm not really sure what to check for. But so far so good. Of note, I did see an error occurring something like "requires X memory but only Y available." I seemed to have solved that by allocating a 4 GB swap file to augment the 4 GB RAM of each Raspberry Pi.

The point about just running 6 independent Pis as opposed to 6 Pis in a swarm is well-taken and I don't know the answer to that.

FYI: I don't have a Threadripper. That was a typo. It's an AMD Ryzen 9 3900X not 3990X. Wish I had the Threadripper though.

Anyway, more experimentation to come. The RPi POE hat fans are really loud. So next modification is to get rid of those.

Any comments welcomed.
2) Message boards : Number crunching : Raspberry Pi Cluster (Message 101746)
Posted 6 May 2021 by Profile Carbon-14
I think Rosetta is now issuing work units that will run on Raspberry Pi's (correct? or at least some of them). I've been contributing for a while with Mac and AMD Ryzen systems. I am toying with setting up an RPi cluster of RPi-4B's (4 Gb). Yeah, hardware bought. Set-up pains with Ubuntu, etc. Maybe ready to actually start running.

I found a post or web page about using Docker to do this. Any comments or suggestions about how to get a cluster up and running in a secure fashion would be appreciated. My idea is to see how many RPi's it takes to make one AMD Ryzen 9 3990X and also to compare them on a work/kW-h basis. My desktop tears through work, but uses about 370 W of power... enough to heat up the office and cause complaints. Can a Pi cluster do close to the amount of work but use less power?

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