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Raspberry Pi B rev2 distributed computing

Posted: Sat Dec 16, 2017 11:24 pm
by thepeacemaker7
Hey Guys,
I am using my two obsolete raspberry pi's (model B Revision 2) to crunch for The pi's don't have much computing power, but I am putting them to work anyway :D . Here is some output from one of my pi's running the client (dnetc). (I am using the Linux eabi arm version).

Code: Select all client for Linux Copyright 1997-2011,
ARM assembly by Peter Teichmann
Please visit for up-to-date contest information.
Start the client with '-help' for a list of valid command line options.

dnetc v2.9110-519-CTR-11111118 for Linux (Linux 4.9.59+).
Please provide the *entire* version descriptor when submitting bug reports.
The bug report pages are at
Using email address ( ID) ''

[Dec 09 02:45:56 UTC] Automatic processor detection found 1 processor.
[Dec 09 02:45:56 UTC] Automatic processor type detection did not
                      recognize the processor (tag: ",
                      id 0x4100b767")
[Dec 09 02:45:56 UTC] OGR-NG: Running micro-bench to select fastest core...
[Dec 09 02:46:15 UTC] OGR-NG: using core #3 (FLEGE 2.0 ARMv5).
[Dec 09 02:46:16 UTC] OGR-NG: Loaded 28/6-24-20-34-15-7*
[Dec 09 02:46:16 UTC] OGR-NG: 23 packets remain in buff-in.og2
[Dec 09 02:46:16 UTC] OGR-NG: 0 packets are in buff-out.og2
[Dec 09 02:46:16 UTC] 1 cruncher has been started.

Both pi's are crunching Optimum Golomb Rulers. I don't believe either of them have participated in the RC5-72 challenge.

Re: Raspberry Pi B rev2 distributed computing

Posted: Sun Dec 17, 2017 12:41 pm
by USAFA82
Interesting. How long does it take to complete a work unit? I wish had some medical projects. They seem to focus on math projects.

Re: Raspberry Pi B rev2 distributed computing

Posted: Sun Dec 17, 2017 1:29 pm
by thepeacemaker7
Each OGR WU has about 23 "packets" or sub-work units. It takes about 3 hours to do a packet, and about a four days to do a full work unit (before it communicates with the server again). The raspberry pi's have the single core ARM CPU operating at 700 Mhz with 512 MB of ram.

I have the Raspberry Pi B rev3 as well (the newest raspberry pi with the quad core ARM CPU), but it is involved in a robotics project right now. :mrgreen: So, I won't be using that one for distributed computing for a while.