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Collaboration with version control

Published in Tiffany Timbers, Trevor Campbell, Melissa Lee, Data Science, 2022

Tiffany Timbers, Trevor Campbell, Melissa Lee

After you are done with your edits, they can be “saved” by committing your changes. When you commit a file in a repository, the version control system takes a snapshot of what the file looks like. As you continue working on the project, over time you will possibly make many commits to a single file; this generates a useful version history for that file. On GitHub, if you click the green “Commit changes” button, it will save the file and then make a commit (Figure 12.13).

HardOps: utilising the software development toolchain for hardware design

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Journal Information

Published in International Journal of Computer Integrated Manufacturing, 2022

Julian Stirling, Kaspar Bumke, Joel Collins, Vimal Dhokia, Richard Bowman

In the HardOps workflow all design files and documents are version controlled using a DVCS. This work concentrates on Git as the most common DVCS, but note that other systems such as mercurial have similar underlying technology. Git uses SHA-1 cryptographic hashes to uniquely identify files and snapshots of the design (known as commits). Each commit includes a description, an author, a complete snapshot of the files, a timestamp, and the hash of the previous commit. This content is then hashed to create a unique identifier for the commit. As the hash of each commit depends on the hash of the previous commit, this creates a Merkle tree – the same technology that underpins blockchains. The entire Merkle tree is stored on the machine of any design participant. While changes can be synced directly between participants, they are more commonly shared via a server on the DevOps platform.

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Collaboration with version control

HardOps: utilising the software development toolchain for hardware design