CCDC’s (ongoing) Journey to Continuous Delivery - London Continuous Delivery - Dec 2015

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The video of this talk is online at: https://vimeo.com/album/3693804/video/148158715 Christmas lightning talk about Cambridge Crystallographic Data Centre's adoption of Continuous Integration, and the unexpected benefits it gave us.

Software

www.ccdc.cam.ac.uk
1
CCDC’s (ongoing) Journey to Continuous Delivery
Clare Macrae
Cambridge Crystallographic Data Centre
1 December 2015
@ClareMacraeUK

www.ccdc.cam.ac.uk
2
The Cambridge Crystallographic Data Centre
Established in 1965.
- UK Registered Charity.
- Financially self-supporting, not-for-profit.
- University Partner Institute.
International Data Repository
Archive of crystal structure data
High quality scientific database
Scientific Software Provider
Search/analysis/visualisation tools
Scientific applications
Collaborative Research Organisation
New methodologies
Fundamental research
Employer of around 60
permanent staff
- Scientific editors
- Software developers
- Applications scientists
- Cambridge, UK
- Rutgers University, US

www.ccdc.cam.ac.uk
3
Experimental Data
Structural Knowledge
Jeff Dahl, CC-BY-SA
CC-BY-SA
Radspunk, CC-BY-SA
C10H16N+,Cl-
Scientific Context

www.ccdc.cam.ac.uk
4
Development Context
• C++, Python, Fortran (decades old) and more
• No high-level support for CI, due to 2- to 3-day builds!
Several million lines of
code
• We had build and release automation in the ‘80s
• Many more manual layers added since then
• Couldn’t remember the last time we had a green build
Legacy build &
release tools & scripts
• Around four months elapsed time in preparation
• Too much manual effort, for release and testingOne release per year!
• Due to effort currently required in each release
Belief: we cannot
release more often

www.ccdc.cam.ac.uk
5
Initial Concerns – why did we wait for CI?
“Our builds
are too slow”
“Our builds
never
succeed”
“Too many
warnings from
our code”

www.ccdc.cam.ac.uk
6
C++ CI Journey…
C# team
started using
TeamCity
Jan 2014:
started
background-
project for
our TeamCity
C++ builds
Sep 2014:
Big push to
move C++
builds to
TeamCity
Oct 2014:
C++
TeamCity
builds turned
on

www.ccdc.cam.ac.uk
7
Getting to Green
• Several people in concerted effort to get any green builds
• Before TeamCity, we hadn’t had any green builds in years!

www.ccdc.cam.ac.uk
8
Speeding up tests
• Incredible value of powerful tools for seeing where time goes

www.ccdc.cam.ac.uk
9
• TeamCity showed evidence of need for new build machines…
• … and the benefit of the new machines
Speeding up build machines

www.ccdc.cam.ac.uk
10
Patterns become visible

www.ccdc.cam.ac.uk
11
Teams auto-deploying (internally)

www.ccdc.cam.ac.uk
12
Teams (and individuals) taking initiative
• This is right outside the Director’s office!

www.ccdc.cam.ac.uk
13
Finally treating warnings as errors

www.ccdc.cam.ac.uk
14
Where are we now?
Much happier
developers!
Team
agreements
needed for
handling
build errors…
More reliable
infrastructure
required
Discussions
have started
on releasing
more often!

www.ccdc.cam.ac.uk
15
Initial Concerns –what really happened?
“Our builds are
too slow”
CI system
identified
bottlenecks, and
speeded up builds,
tests
Also got us new
build hardware
Easy to identify the
slow tests – either
speed them up, or
run less often
“Our builds
never
succeed”
CI system
massively
simplified fixing
build errors
Seeing test history
across all builds
exposes flicker
tests
Per-push feedback
within 15-30
minutes during the
day, instead of the
next morning
“Too many
warnings from
our code”
Fast feedback
made it viable to
treat warnings as
errors

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At the recent Microsoft Ignite 2023 conference, Microsoft unveiled a groundbreaking strategy that will redefine enterprise work management. The plan involves integrating Microsoft’s key planning tools, Microsoft To Do, Microsoft Planner, and Microsoft Project for the web into a unified experience called “Microsoft Planner.” What does this new strategy from Microsoft mean for current users? Join us and learn how best to take advantage of this announcement while gaining a clear path on how to elevate the current state of Microsoft Planner from a basic task manager to a comprehensive tool for Enterprise Work Management using OnePlan. Learn how OnePlan’s integration with Microsoft Planner allows for strategic alignment with business goals through advanced features like strategic planning, portfolio management, resource management, financial management, and more!

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CCDC’s (ongoing) Journey to Continuous Delivery - London Continuous Delivery - Dec 2015

1. www.ccdc.cam.ac.uk 1 CCDC’s (ongoing) Journey to Continuous Delivery Clare Macrae Cambridge Crystallographic Data Centre 1 December 2015 @ClareMacraeUK

2. www.ccdc.cam.ac.uk 2 The Cambridge Crystallographic Data Centre Established in 1965. - UK Registered Charity. - Financially self-supporting, not-for-profit. - University Partner Institute. International Data Repository Archive of crystal structure data High quality scientific database Scientific Software Provider Search/analysis/visualisation tools Scientific applications Collaborative Research Organisation New methodologies Fundamental research Employer of around 60 permanent staff - Scientific editors - Software developers - Applications scientists - Cambridge, UK - Rutgers University, US

3. www.ccdc.cam.ac.uk 3 Experimental Data Structural Knowledge Jeff Dahl, CC-BY-SA CC-BY-SA Radspunk, CC-BY-SA C10H16N+,Cl- Scientific Context

4. www.ccdc.cam.ac.uk 4 Development Context • C++, Python, Fortran (decades old) and more • No high-level support for CI, due to 2- to 3-day builds! Several million lines of code • We had build and release automation in the ‘80s • Many more manual layers added since then • Couldn’t remember the last time we had a green build Legacy build & release tools & scripts • Around four months elapsed time in preparation • Too much manual effort, for release and testingOne release per year! • Due to effort currently required in each release Belief: we cannot release more often

5. www.ccdc.cam.ac.uk 5 Initial Concerns – why did we wait for CI? “Our builds are too slow” “Our builds never succeed” “Too many warnings from our code”

6. www.ccdc.cam.ac.uk 6 C++ CI Journey… C# team started using TeamCity Jan 2014: started background- project for our TeamCity C++ builds Sep 2014: Big push to move C++ builds to TeamCity Oct 2014: C++ TeamCity builds turned on

7. www.ccdc.cam.ac.uk 7 Getting to Green • Several people in concerted effort to get any green builds • Before TeamCity, we hadn’t had any green builds in years!

8. www.ccdc.cam.ac.uk 8 Speeding up tests • Incredible value of powerful tools for seeing where time goes

9. www.ccdc.cam.ac.uk 9 • TeamCity showed evidence of need for new build machines… • … and the benefit of the new machines Speeding up build machines

10. www.ccdc.cam.ac.uk 10 Patterns become visible

11. www.ccdc.cam.ac.uk 11 Teams auto-deploying (internally)

12. www.ccdc.cam.ac.uk 12 Teams (and individuals) taking initiative • This is right outside the Director’s office!

13. www.ccdc.cam.ac.uk 13 Finally treating warnings as errors

14. www.ccdc.cam.ac.uk 14 Where are we now? Much happier developers! Team agreements needed for handling build errors… More reliable infrastructure required Discussions have started on releasing more often!

15. www.ccdc.cam.ac.uk 15 Initial Concerns –what really happened? “Our builds are too slow” CI system identified bottlenecks, and speeded up builds, tests Also got us new build hardware Easy to identify the slow tests – either speed them up, or run less often “Our builds never succeed” CI system massively simplified fixing build errors Seeing test history across all builds exposes flicker tests Per-push feedback within 15-30 minutes during the day, instead of the next morning “Too many warnings from our code” Fast feedback made it viable to treat warnings as errors

Hinweis der Redaktion

Every drug discovered in the last 30 years has in part owed its discovery to our database and software!
Inevitable mixture of new and legacy code, data, and build systems Many manual tasks for release (despite multiple automation efforts) Much testing by internal users
C# team didn’t have the legacy code
linux-32 release continuous
https://code.google.com/p/wall-t/ https://github.com/crunchie84/teamcity-dashboard/
Mention code coverage too
Don’t underestimate the value CI for providing or enabling: Fast feedback to developers All kinds of data about your builds Integrations with other tools (for dashboards, code quality, deployment, etc.) Visibility to internal stakeholders I wish I'd known about the last three much earlier It can be hard to persuade stakeholders in advance of the value Just do it! Implementing CI has enabled much faster innovation than I dreamed possible Many code-quality things we’d talked about for years are now just implemented

CCDC’s (ongoing) Journey to Continuous Delivery - London Continuous Delivery - Dec 2015

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