Anyone still using a raspberry pi 3

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BetelgeuseFive Project Donor
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Message 1904097 - Posted: 1 Dec 2017, 14:24:50 UTC - in response to Message 1904078.  

Speaking of Rpi's IIRC somewhere someone said the the version of BOINC on the Jessie Distro had some issue with one of the projects and it not doing work. If someone remembers can they let us know.

Jessie is the previous release and came with BOINC 7.4.23. The current release is Stretch and it comes will 7.6.33.

There is a later BOINC (7.8.3 currently) in Stretch-backports but the Raspberry Pi foundation don't have a backports repo so you have to use the Debian repo if you want it. I have heard reports that this one may have issues. I have used it on the Pi without any problems. Your mileage might vary...


I recently upgraded my 3 systems (2 * Model 2B and 1 * Model 3B) from Jessie to Stretch and added another Model 3B.
All 4 systems are running Stretch without issues. Hope new work is coming soon ...

Tom
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Williamgcastro

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Message 1906420 - Posted: 11 Dec 2017, 14:08:48 UTC - in response to Message 1904012.  

Hello Chris

I'm using an open "case" that I got off amazon. It's really just two pieces of acrylic with four brass standoffs and the PI board held in between. The fan is located right above the processor and I have a heat sink installed.

Running seti on all four cores my CPU temp, as reported by the system, is usually around 59C.

As someone else replied, when I said "headless" I meant without keyboard or monitor attached.

Regards

William
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David Gale

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Message 1909775 - Posted: 31 Dec 2017, 7:46:40 UTC - in response to Message 1890988.  

Using 5 Raspberry Pi 3s crunching SETI@Home 100% CPU time. I have them in a 3D printed rack and laid on their side with a big 24V fan pushing hair through each slot in the rack and keeping the CPU packet temperature at a nice chilly 38 degrees Celcius.

Works great, currently crunching almost 1500 average credit and am in the top 25% of average credit contributors.


Pictures? :)
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Profile MarkJ Special Project $250 donor
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Message 1909792 - Posted: 31 Dec 2017, 9:48:36 UTC - in response to Message 1909775.  

Pictures? :)

Well I don’t know about him but I designed a 3D printed case to hold four side by side with active cooling. I am calling it the Pi ^4 (Pi to the Power of Four) case. I have done another version but am waiting on some parts before I can splash it all over the internet :-)

Pics of the prototype can be found here.
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Miroslav KUBIK

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Message 1924847 - Posted: 16 Mar 2018, 6:37:39 UTC

I recently upgraded my setup with RPi 3 B+

I made a small "cluster" consisting of 5 PIs:
1x RPi 3B
4x RPi 3

The main node is RPi 3B+ serving also as a file system server for rest of the nodes, so all client nodes are without SD card and boot with PXE over network.

photo: https://imgur.com/a/Qq6sz
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Message 1924866 - Posted: 16 Mar 2018, 11:56:20 UTC

For those that don't know the Raspberry Pi Foundation released the Pi 3 model B+ on the 14th of March. Its a bit faster (1.4GHz instead of 1.2GHz) and has better networking than the 3B (330 Mbit/sec plus dual-band WiFi). It also supports power over ethernet (PoE) by way of a PoE HAT module. Memory is still the same 1GB of DDR2.


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Kissagogo27 Special Project $75 donor

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Message 1924912 - Posted: 16 Mar 2018, 17:11:44 UTC
Last modified: 16 Mar 2018, 17:12:12 UTC

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Profile MarkJ Special Project $250 donor
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Message 1924948 - Posted: 16 Mar 2018, 22:03:50 UTC

Here are the BOINC benchmark results from a 3B and the 3B+

Rpi 3B
Number of CPUs: 4
975 floating point MIPS (Whetstone) per CPU
15364 integer MIPS (Dhrystone) per CPU

Rpi 3B+
Number of CPUs: 4
1123 floating point MIPS (Whetstone) per CPU
17834 integer MIPS (Dhrystone) per CPU

Over on Einstein I am seeing run times of approx 42,000 seconds for the 3B and 37,000 for the 3B+
BOINC blog
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Profile Chris Feyen
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Message 1925059 - Posted: 17 Mar 2018, 15:20:33 UTC

MarkJ - Thanks for the benchmark stats.

Miroslav KUBIK - Nice cluster. With POE, it is nice and clean.
~Chris

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Message 1927039 - Posted: 29 Mar 2018, 8:25:26 UTC

I'm running a cluster of 25 3Bs. They seem to run in the 550 to 600 RAC.
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Profile Chris Feyen
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Message 1927423 - Posted: 31 Mar 2018, 1:57:45 UTC

Is it possible to have 1 raspberry pi hand out work units to the other raspberry pi's in a cluster? And have 1 computer account be the go-between of all of them in the cluster and SETI? So that the cluster would look like 1 PC to SETI?
~Chris

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Message 1927439 - Posted: 31 Mar 2018, 3:08:47 UTC - in response to Message 1927423.  

Is it possible to have 1 raspberry pi hand out work units to the other raspberry pi's in a cluster? And have 1 computer account be the go-between of all of them in the cluster and SETI? So that the cluster would look like 1 PC to SETI?

It is possible, but you will need to write the software to do it.
SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the BP6/VP6 User Group today!
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Message boards : Number crunching : Anyone still using a raspberry pi 3


 
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