by Ground Electronics

The datacentre-in-a-box for high-performance-computing and cloud software development, testing, and education

View all updates Jun 06, 2018

Circumference Control Software

In this video we take a look at the software which runs on the front-end processor (FEP) and exercises control over power sequencing, console routing, cooling and instrumentation. This is written in Python, configured via YAML, and uses MQTT pub/sub messaging to decouple the daemon which communicates with the backplane, from controlling applications.

A handy command line utility (CLI) is provided for cluster control, while integration with custom applications — e.g. for orchestration and automated systems testing etc. — is made possible via MQTT and a simple JSON data format. As noted in the video, we plan to do a lot more work on the software and this includes developing a clean, consistent Python API for use alongside MQTT.

We’re also considering future support for IPMI (Intelligent Platform Management Interface) and SCPI (Standard Commands for Programmable Instruments), as used by server/blade chassis and test equipment respectively, to aid integration with existing systems.

Andrew and the Circumference Team

$8,535 raised

of $40,000 goal

21% Funded Time Expired
Jun 28 2018

Product Choices


Support Us!


Circumference 25 Enamel Badge

The same C25 metal and vitreous enamel badge as can be found on the front of the 8+1 node cluster, albeit with a pin fastener. Wear your Circumference support with pride!


Circumference 25

C25 8+1 node cluster campaign pricing.


Circumference 100

C100 32+1 node cluster campaign pricing. Includes custom logo etched on the wood veneer front panel.


Ground Electronics

Ground Electronics is a supplier of open source hardware kits and accessories, and is the manufacturing division of AB Open, an open source and technical communities consultancy that specialises in embedded and wireless systems. AB Open has many years experience working with semiconductor companies, component distributors and equipment vendors, developing technology demonstrators and consulting on all matters related to open source hardware and software.

Andrew Back

Dave Ives

Gareth Halfacree

Chelsea Back

Jerome Dineen

Rogue Robot

Video Production

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