Show off Julia performance on your PC!

General Usage Performance
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This thread got a bit off-topic, but I figured I would try the tests in this comment. I have an MSI laptop that is a few years old now:

julia> versioninfo()
Julia Version 1.4.1
Commit 381693d3df* (2020-04-14 17:20 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)    
  CPU: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-8.0.1 (ORCJIT, skylake)
Environment:
  JULIA_EDITOR = "C:\Users\peter\AppData\Local\Programs\Microsoft VS Code\Code.exe"
  JULIA_NUM_THREADS = 6

with N = 10^8

julia>  @btime sequential_add!($y, $x)
  13.872 s (0 allocations: 0 bytes)

julia> @btime parallel_add!($y, $x)   
  4.312 s (33 allocations: 4.98 KiB)

with N = 2^27

julia>  @btime sequential_add!($y, $x)
  21.121 s (0 allocations: 0 bytes)   

julia> @btime parallel_add!($y, $x)   
  6.310 s (34 allocations: 5.00 KiB)
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