Saw this recently, a backplane for up to 5 rpi compute modules (rpi but
lacking external ports). It's pricey, but interesting for a contained
little farm ($270 for the backplane, $30ea per pi3 compute).
https://www.mininodes.com/product/5-node-raspberry-pi-3-com-carrier-board/
Shame none seem to include good wired ethernet options for the units, like
this 16 rpi zero board, but sadly never went anywhere for production...
https://www.cnx-software.com/2016/01/22/this-is-what-a-16-raspberry-pi-zero-cluster-board-looks-like/
I use pi's for anything from network testing units, to serial terminal
servers (just add 2-4 port usb serial adapters), retropi gaming systems, or
even home sprinkler 24v irrigation controllers, but clusters for academic
research might be cool if so inclined, and cheaper/more portable than
normal compute hardware to play with.
-mb
On Fri, Apr 19, 2019 at 3:01 PM Eric Oyen <
eric.oyen@icloud.com> wrote:
> Well,
> About all you need is the open_cl package, a small number of recent
> vintage supported GPU cards, small HDD’s (enough for the OS and some swap
> space) as much ram as you can stuff in each machine and a good network card
> and switch combo. The reason for the GPU’s? Bitcoin mining, password
> cracking/recovery and any other project that supports using multiple gpu
> cards. If your machines aren’t up to the task, start with a PXE booted
> cluster of RaspberryPi units (start with an odd number like 3 (one as the
> master control unit). I had plans to do this myself, but my fixed income
> here just isn’t up to the task of doing more than paying for the basic
> bills.
>
> -Eric
> From the Central Offices of the Technomage Guild, Open Cluster Development
> and research Dept.
>
>
> On Apr 16, 2019, at 7:36 PM, Harold Hartley <wheelie207@ownmail.net>
> wrote:
>
> I’m looking at building a cluster and I know there are different types. I
> haven’t fully decided on what I would be using it for.
> Well, I have 4 computers about 3 or 4 years old and all have i5 processing
> with 8 gigs ram in each. I am not sure what size hard drives I want in
> them. I am looking at doing animations making my own small video movie like
> and then post on my blog. Even thought of other uses as well.
> Would anyone have an idea what type of cluster I should go with. Thanks
>
> --
> Harold Hartley
> 17632 N. 5th place
> Phoenix, AZ 85022
> wheelie207@ownmail.net
>
>
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