96Boards OpenHours Session 6 Recap

96Boards OpenHours session six the topic was “Installing Docker on aarch64 with the Reference Platform Build on a 96Boards CE-edition. To watch this weeks’ session go to: https://www.youtube.com/watch?v=lvv7CbXOHtw

Below is an overview of what was discussed including the time in the video where this topic was discussed.

The first topic was a recap of last week’s session:

Our fifth 96Boards OpenHours session the team discussed in more detail enabling the GPIO libraries on 96Boards. To watch this weeks’ session go to: https://www.youtube.com/watch?v=fbTo3BwURg8&feature=em-subs_digest

This week: (begins at 2:02) —** **To watch this weeks’ session go to: https://www.youtube.com/watch?v=lvv7CbXOHtw

Today’s guest speaker is Bill Fletcher who is a manager in Linaro’s Marketing and EMEA Field Engineering. He gave a talk on installing Docker on one of the 96Boards consumer editions.
Discussed qualcomm workshop and presentation that Robert gave during the workshop
- Shared screen and gave a quick recap of his presentation
- Overview on Linaro and 96Boards
- Overview of DragonBoard 410c
- Software cores that are available
- Available documentation and sample code
- Fastboot mode
- USB Debugging
- Expansion headers
- Board Layout
- Different Mezzanine boards available
14:58 – Question – Does DragonBoard 410c have a sleep capability to get more out of your batteries?
17:30 – Question – It would be nice if 96boards spec allowed option for USB 3.0 – is that going to be available on the high speed expansion connectors?
21:54 – Bill Fletcher begins talk on Docker on aarch64 (see his blog for more details: https://www.96boards.org/blog/installing-docker-aarch64-96boards-ce/ )
- Docker is “an open source project to pack, ship and run any application as a lightweight container.”
- Talks about Enterprise software and how it relates to Docker
- Docker is widely supporter both on 64bit and 32bit
- 3 elements that make-up Docker
  - Client – command line interface
  - Demon – does building and distributing
  - Remote registry – external repository of Docker images
- Some key facts:
  - An image is a read only file – i.e. a template
  - A container is a running instance of an image and can run many containers of same image
- 3 sources for where images come from
  - Can be preexisting images from ones you download
  - Create an image by modifying an existing image and then uploading it
  - Create an existing file system and import into Docker
- 30:08 - Why run it on Dragonboard or HiKey?
  - Bill goes through several reasons why this works well on these boards and examples when it might be a good option
- 34:03 – Question - What is the difference between running Docker and a VMware?
- 36:13 – Question - Can a container access GPIO’s?
- Bill then speaks about hardware access in more detail to answer this question
- 42:32 – Question – What is the impact on performance on any application inside a container and running directly?
- The session ended with Bill mentioning that he will be attending the next session to answer any further follow-up questions
Bill wrote a great blog that goes through how to get Docker up and running that you can check out here: https://www.96boards.org/blog/installing-docker-aarch64-96boards-ce/