Questions tagged [cluster]

A group of computers acting as one super-computer.

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56 views

Make RPi 4 more powerful with multiple RPi 3 B+ connected [closed]

PROJECT FOR MY SON & ME My son wants me to make our RPi4's more powerful and asked if I can connect them together in a cluster of RPi3 B+. I have 2 RPi4 (2GB & 4GB) and 6-RPI3 B+ stacked ...
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45 views

Can I just create a python thread per raspberry pi for parallel processing?

I have been looking to make a cluster of raspberry pi 4s, and have been pretty interested in it and made good head way. I have seen quite a few guides on the topic as well. I followed this one found ...
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30 views

Static IP address on the Raspberry PI 3 in combined network

I building cluster computer with two Raspberry PI 3 where I have 1 internet router and one LAN switcher. Both Raspberry PI are connected to the switcher. Internet router gateway is 192.168.1.1 LAN ...
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26 views

Is my ClusterHat faulty or my RPi GPIO fried?

I've been using a ClusterHat (1RPi + 4 PiZeroes) and all has been well until recently. The PiZeros boot off the RPi's SD card using the ClusterHAT-2018-10-09-lite-1-usbboot boot image, and when I ...
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15 views

Loading root file system from NFS

I managed to simulate a Cluster HAT like environment with a Linux machine. I launched rpiboot with the modified config.txt, cmdline.txt and initramfs (which is missing from the original setup but is ...
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1answer
110 views

Cost-effectiveness of Pi cluster

Does it make sense to use Pi cluster for real computation? My use case is to carry out intensive computation tasks 24/7. The tasks are pleasantly parallel, and there will be minimum inter-node ...
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1answer
38 views

mpiexec with mpi4py not executing on startup raspberry pi

I have a python programme that works out primes that I have set up with mpi4py, for it to run on my raspberry pi cluster, and I can normally run the command from any directory but when I put it in rc....
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84 views

PI2/3 Cluster with Hass.io (Home Assistant)

I have a Raspberry PI Cluster (1 master PI/2, 2 workers PI/3) with Raspbian, Docker, Kubernetes installed. I have no volumes defined (OpenEBS seems not officially supported yet). I initialized helm ...
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48 views

Raspberry Pi Cluster Computing With MPI

So I have followed this tutorial on how to make a Raspberry PI cluster computer. It works great, I can parallel my processes with MPI, but I'm also wondering if this is possible. Currently, all four ...
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19 views

How to attach two raspberry pi zero w together with sepatate independent displays?

How do I attach two raspberry pi zero w's together with sepatate independent displays to function as "one computer with extended display on two panels"? The two displays are HDMI with usb touch (7 ...
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40 views

Technologies to use in a peer to peer, file sync, high availability, cluster like, backup solution [closed]

I've been doing research on how to setup a self host backup high availability solution using raspberry pi's. The biggest requirement is master to master replication and cross platform client support. ...
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1answer
189 views

TensorFlow on a ClusterHat

Has anyone experience of running distributed AI on the Cluster Hat using Pi Zeroes? Specifically, can I run TensorFlow on a Cluster HAT ideally using the GPUs on the PiZeros as well as on the ...
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226 views

Is it viable to run a cluster of Pis on PoE?

I’m thinking of experimenting with clustering RPis, but the thought of that mess of equipment (switch + multi-port USB charger) and cables is a bit of a turn-off. Does anyone know if there are any ...
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29 views

Duplicate output in MPIEXEC

I have installed MPI on my 3 node raspberry-pi 3B+ cluster and whenever I run any command I get 12 replies, 4 from each node, as an example, when I run mpirun -machinefile machine-file hostname I get ...
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2answers
333 views

RPi cluster or a dual Xeon

I have a text processing project that is currently Bash, GNU Parallel and other command-line tools. It's getting moved to a C++ queue type design. It is about 14,000 files each day, plus performing ...
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1answer
82 views

is it possible to set up a Raspberry pi cluster to act as a single pi with increased resources?

I have acquired some extra raspberry pi's and am looking to make use of them all in some way. As I have been reading around, all of the "turn your Pi into a supercomputer" articles are only referring ...
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3answers
475 views

Combine 2 Raspberry Pi 3

Can i somehow combine 2 Pi's so i have a better CPU speed? I'm new to this so a link to some tutorials (if possible) would be nice I know you can create a cluster for a database so you can scale it, ...
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1answer
69 views

A way to connect M RaspiCams to N raspberry Pi Compute modules, where M>>N?

I am planning to set up camera rig, which will require 10+ cameras (preferred 20+ or "as many as possible" in spatial arrangement around the observed area. The setup will be academic, experimental, ...
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1answer
199 views

Blockchain and Raspberry Pi [closed]

I'm bit new to this technology called blockchain. I'm trying to make a small prototype on blockchain for some learning purpose. After reading few related contents I found it requires a distributed ...
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2answers
102 views

Raspberry Pi Cluster Pinout [closed]

I need 2 raspberry pi for my project (i'll use all pins on both pi's) and i want to control them with an interface on my laptop (used python tkinter) but i couldn't figured how to use both pi's. Maybe ...
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2answers
342 views

Powering a number of Pi from a single bench top power supply [closed]

I'm thinking of investigating the Bitscope Blade QUATTRO to host up to forty boards. Looking at the details each Blade can power the boards off a single supply, which need not be at 5V with up to 3A (...
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1answer
71 views

Adding non-ARM devices to bramble cluster

I've started a project to build my first Pi cluster and am currently setting up a cluster of three Rpi 3B+ boards each running the latest version of Debian My understanding is that that'll equate to ...
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1answer
371 views

Can Pi Zeros be used in a cluster like Pi 3s?

I am planning to run a cluster of Raspberry Pi Zeros. I know we can do it with a cluster of Pi 3 boards but I want to know is the same possible with Pi Zero?
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1answer
726 views

Raspberry Pi 3 Cluster

I was looking to make a Raspberry Pi 3 cluster just for the fun of it and for learning a bit about how clusters work. From my research I have seen that the cluster concept follows 1 machine which is ...
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1answer
677 views

Raspberry Pi 3B Dual [closed]

Bought our first Raspberry Pi months ago installed Raspbian but when playing a video there was some stutter Then we had an idea buy a second Raspberry Pi and fuse the two together now the real ...
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1answer
454 views

Unable to reach pi cluster with hostnames on network

I'm currently working on a project using 4 raspberry pi as a cluster. These pi's are attached to each other through a local network, but I need to be able to send command to it from a host computer ...
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1answer
58 views

max number of Pi 3's to safely plug into a wall [duplicate]

This post is basically a repeat of: Is there a maximum number of Pis that I can power from the same wall socket? However my situation is slightly modified. Particularly for wall sockets in Denmark, ...
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1answer
281 views

RPi Cluster for Materials Research

I'm Materials Science student interested in using an RPi cluster for calculations of materials properties. I'm very new to HPC but what I know about the RPI is that its processor is based on the ARM ...
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181 views

BitLocker Brute Force

I have a couple of hard drives from my old Windows PC setup which are encrypted with BitLocker. One is 160GB and the other is 320GB. Since switching to using a Mac, they have sat for the past 5 or ...
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1answer
581 views

Pi Zero Cluster with Lan over Usb

I want to buy some Pi Zeros and build a cluster. I wanted to ask if i add an Ethernet port through a mini-USB to Usb OTG Adapter and a RJ45 Adapter, then the Pi Zero would function like the standard ...
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633 views

How do I open protocols and ports between two hosts

I am trying to configure my Docker Swarm Cluster and need to have the following ports open so that my cluster can communicate and operate correctly: TCP port 2377 TCP port and UDP port 7946 UDP port ...
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1answer
929 views

RetroPie with multiple Pi 3s

I currently have a Rasp Pi 3 Model B running RetroPie on Raspbian that is wiring well enough, it can play everything pre-N64 fairly well, and can get through many of the N64 games out there with ...
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105 views

Is ethernet more efficient than wireless on a Pi

I'm thinking of building a small Pi cluster using a Bramble case or three, but I'm put off by the hassle of having a mess of Ethernet cables and a large router connecting together 10 or so so small ...
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0answers
361 views

Crosscompiling with distcc on Raspberry Pi Cluster

I wanted to make a cluster of Raspberry Pi's for distributed compiling (C++), so I started with just one Pi for testing. After installing distcc on my PC and the Pi and configuring them the compiler ...
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365 views

Is it possible to install Rocks Cluster Distribution on Raspberry Pi?

There are lots of websites about making a supercomputer with Raspberry Pi. Is it possible to install "Rocks Cluster Distribution" on Raspberry to have a more efficient cluster?
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1answer
98 views

One Python Program - Several Raspberries

I have quite a complex python program, and i would like to run one instance of it, on an environment, that would be managed by several Raspberries altogether, in a transparent fashion. I wish to ...
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1answer
142 views

Mounting holes of Pi3 same as Parallella?

I am planning to buy a RaspberryPi 3 to get started on that, but wanted to prepare for the future by buying a stackable case. Now I also read about the Parallella and find the idea very interesting ...
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1answer
88 views

Is there a maximum number of Pis that I can power from the same wall socket?

I'm trying to get an idea of how many pi's I can run at the same time from the same wall socket. I've done some research and it seems to me that the peak power consumption is somewhere around 750mA. ...
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2answers
498 views

Power multiple Pis through 5V GPIO and 5V wall wart

I'm considering making a Pi cluster (Let's say 8 Pi 3s), and instead of buying an 8-port USB charger and 8 USB cables of exactly the right length, could I use a powerful enough (8A?) 5V wall wart and ...
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1answer
512 views

Internal network between multiple RPis

Consider the following scenario where I have n number of RPis connected to a Ethernet switch in order to create a internal network. All these RPis have a static IP. Now one of the RPi (call it a ...
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1answer
2k views

How to install mpi4py on for Python3 on Raspberry Pi after installing MPICH?

I have installed MPICH on my Pi. I am making a cluster. sudo apt-get install python-mpi4py installs mpi4py. However, it also install openmpi which conflicts with MPICH. So, I started from scratch ...
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92 views

Bluetoothctl scan response in cluster setup

I have a raspberry Pi cluster with 4 nodes. I wanted to run bluetoothctl in the master node and receive just the scan response in other three nodes in the cluster. Please help me how to do this. ...
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6answers
18k views

Does Raspberry Pi cluster make sense for a small rendering farm

I have seen bunch of articles saying how raspberries could be joined to make a cluster. I basically am a 3d artist type thing and you know rendering a 10 second animation can take hours. So if I make ...
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1answer
953 views

Proper use of a rpi cluster

I have done a lot of reading about rpi clusters. Don't worry I am not going to ask if they function as a single virtual computer. I understand that they can be used to divide up complex tasks or ...
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1answer
655 views

GUI on Raspberry Pi cluster

I was thinking of building a small cluster (due to the small price) but i want to know if i can get a gui (like xfce or lxde) to run o the master/ host or whatever.
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3answers
194 views

Clustering the 3.3v and 5v rails

Is it possible or advisable to connect the 3.3v or 5v rails of each Pi in a Pi cluster to other Pi's respective rails, so as to minimize loads across any one particular Pi's voltage rail? If it is ...
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3answers
2k views

Is it OK to install Jessie Lite on a Raspberry 1 model B?

My problems started when I used it as a master node in a cluster with 3 more Pi2B as slaves. Nfs4 did not run because of the portmap issue and then I could not install openjdk7 because of the packages ...
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1answer
2k views

How to connect multiple Pi Zero ethernet gadgets to a Pi 2?

I followed this guide to turn my Raspberry Pi Zeroes into ethernet gadgets and I did not change anything in the /etc/network/interfaces or /etc/dhcpcd.conf files. All of the SD cards were fresh ...
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3answers
2k views

USB Hub to power 8 Pis

Would this USB hub work to power 8 Pi 3's? If not... What are clean powering options for a cluster of 8?
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6answers
4k views

Raspberry Pi Cluster Computer

I have recently bought a Porta Pi Arcade, which is basically an RPi powered arcade machine running emulation station and retro pi. I am currently running mame, Sega genesis etc. Using the Pi 2 i have ...