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Rob Pike – 'Concurrency Is Not Parallelism' [video]

Original article
vimeo.com|20 points|10 comments|by jruohonen|Jul 4, 2026

Rob Pike: Distinguishing Concurrency from Parallelism

Below is a summary of the presentation titled 'Concurrency Is Not Parallelism' featuring the software visionary, Rob Pike.

Rob Pike - 'Concurrency Is Not Parallelism'

About the Speaker

Rob Pike is a legendary figure in the realm of computing. His professional legacy is vast and deeply influential, spanning several foundational technologies:

  • Operating Systems: Unix and the Plan 9 OS.
  • Literature: Co-author of The Unix Programming Environment.
  • Standards: The creation of UTF-8.
  • Languages: The development of the Go programming language.

"Rob Pike is a software pioneer whose influence is felt across almost every modern computing environment."

The Core Concept

The central thesis of the video is that concurrency and parallelism are the same thing. In reality, they are distinct concepts. Mathematically, we can express this as:

Concurrency≠ParallelismConcurrency \neq ParallelismConcurrency=Parallelism

To visualize the difference:

For example, in Go, you might use a goroutine to handle concurrency:

go func() {
    fmt.Println("This is a concurrent task")
}()

Platform & Service Details

The video is hosted via Vimeo and associated with Heroku.

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