The Sustainability Mythbuster

Transcript

1. Martin Lippert, Spring Tools Lead & Sustainability Ambassador @ VMware
   February 2023
   The Sustainability Mythbuster
   from a software engineering perspective
   

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2. We need to decarbonize the entire
   world of software engineering
   hardware production
   commute to/from work
   heating / cooling
   datacenter operation (energy)
   energy production
   network data transfer
   business travel
   food at work
   accommodation
   energy consumption
   . . .
   . . .
   . . .
   . . .
   conferences
   virtual meetings / zoom calls
   

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3. This is
   
   
   Extremely Difficult
   

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4. We talk about
   
   
   CO2eq
   

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5. We talk about
   
   
   CO2eq
   equivalent
   (this includes other greenhouse gas emissions)
   

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6. Sometimes it sounds like we are
   already close, almost done
   we are running on 100% renewable energy
   this () is 100% carbon neutral
   we aim for net-zero by 20xx
   the green cloud
   we are producing renewable energy on-site
   we switched to a di
   ff
   erent language
   zero waste
   we do virtual meetings only
   we deploy to a public cloud, that takes
   care of everything
   

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7. "We produce, run, operate
   
   
   100 %Carbon Neutral"
   

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8. "We are at
   
   
   Net Zero"
   

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9. Reducing Emissions
   Eliminate
   (do not emit carbon)
   Offset
   (continue emit carbon)
   Compensate
   (ask someone else to not emit carbon)
   Neutralize
   (remove existing carbon from atmosphere)
   

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10. Reducing Emissions
    Eliminate
    (do not emit carbon)
    Offset
    (continue emit carbon)
    Compensate
    (ask someone else to not emit carbon)
    Neutralize
    (remove existing carbon from atmosphere)
    Carbon Neutral
    

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11. Reducing Emissions
    Eliminate
    (do not emit carbon)
    Offset
    (continue emit carbon)
    Compensate
    (ask someone else to not emit carbon)
    Neutralize
    (remove existing carbon from atmosphere)
    Net Zero
    

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12. What carbon offsetting means
    
    
    Invest in a project with a positive
    impact on carbon emissions
    (somewhere in the world)
    

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13. Example
    
    
    Cookstoves
    

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14. Example
    
    
    Preserving Trees
    

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15. Example
    
    
    Planting Trees
    

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16. Carbon Offsetting
    doesn’t solve the problem
    
    
    We need to
    
    
    eliminate the emissions
    

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17. "We are running on 100%
    renewable energy"
    

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18. What it means
    We buy as much renewable
    energy as we consume in total
    

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19. You are not running your
    workloads on 100%
    renewable energy all the time
    

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20. "We are producing 100%
    green energy (on-site)"
    

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21. Same problem - you are not
    running your workloads on 100%
    renewable energy all the time
    

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22. There is not enough
    renewable energy
    production (yet)
    
    
    -
    
    
    wasting green energy causes more fossil
    energy production somewhere else
    

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23. "If not used, it doesn’t
    consume energy"
    

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24. Reserved Resources
    consume energy (~50%)
    

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25. Zombies
    are a real problem
    Related study: Jonathan Koomey & Jon Taylor: „Zombie/Comatose Server Redux“, http://anthesisgroup.com/zombie-servers-redux/
    

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26. Really think about your container
    resource requirements
    

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27. "Hardware will be
    more efficient"
    

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28. Don’t ignore
    
    
    the rebound effect
    

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29. data centers
    
    
    will consume 10% of world-
    wide energy by 2030
    

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30. "software is getting slower
    more rapidly than hardware
    is becoming faster"
    (Wirth’s law)
    

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31. Write better software
    that uses less energy
    
    
    that uses less hardware
    

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32. CPU
    Memory
    Network
    

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33. Carbon Intensity
    of a software will be a differentiating factor
    

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34. Green Software Foundation
    https://greensoftware.foundation
    

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35. Remember
    
    
    We can have a huge impact
    

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36. Let’s do it !!!
    

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37. Thank You
    for listening
    
    
    Martin Lippert
    
    
    @martinlippert
    

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