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Improve information displayed on threads by versioninfo #52404

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nilshg opened this issue Dec 5, 2023 · 0 comments · Fixed by #52423
Closed

Improve information displayed on threads by versioninfo #52404

nilshg opened this issue Dec 5, 2023 · 0 comments · Fixed by #52423

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@nilshg
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nilshg commented Dec 5, 2023

Current 1.10-rc2 shows:

C:\>julia -q --threads=auto --startup-file=no -e "using InteractiveUtils; versioninfo()"

Julia Version 1.10.0-rc2
Commit dbb9c46795 (2023-12-03 15:25 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: 8 × 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, tigerlake)
  Threads: 11 on 8 virtual cores

I've learned on Slack that the surprisingly high number of threads is due to additional GC threads and that therefore the CPU isn't actually oversubscribed.

A related issue is #48580 which complained about nthreads() giving unexpected results since the introduction of interactive threads. To my mind ideally versioninfo() (and related places/functions which give threads info) should say something like:

Threads:
    - Default: 8
    - Interactive: 1
    - GC: 3
Number of virtual cores: 8
@IanButterworth IanButterworth mentioned this issue Dec 6, 2023
Merged
IanButterworth added a commit that referenced this issue Dec 28, 2023
@IanButterworth
update nthreads info in versioninfo (#52423)
e96c13a 
Fixes #52404
@nilshg I opted to make it one line as it fits.
```
julia> versioninfo()
Julia Version 1.11.0-DEV.1011
Commit bb7091c* (2023-12-04 14:58 UTC)
Platform Info:
  OS: macOS (arm64-apple-darwin23.0.0)
  CPU: 10 × Apple M2 Pro
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, apple-m1)
  Threads: 1 default, 0 interactive, 1 GC (on 6 virtual cores)
Environment:
  JULIA_EDITOR = code
```
KristofferC pushed a commit that referenced this issue Jan 5, 2024
@IanButterworth
update nthreads info in versioninfo (#52423)
a2ffa91 
Fixes #52404
@nilshg I opted to make it one line as it fits.
```
julia> versioninfo()
Julia Version 1.11.0-DEV.1011
Commit bb7091c* (2023-12-04 14:58 UTC)
Platform Info:
  OS: macOS (arm64-apple-darwin23.0.0)
  CPU: 10 × Apple M2 Pro
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, apple-m1)
  Threads: 1 default, 0 interactive, 1 GC (on 6 virtual cores)
Environment:
  JULIA_EDITOR = code
```

(cherry picked from commit e96c13a)
KristofferC pushed a commit that referenced this issue Jan 5, 2024
@IanButterworth
update nthreads info in versioninfo (#52423)
79684ad 
Fixes #52404
@nilshg I opted to make it one line as it fits.
```
julia> versioninfo()
Julia Version 1.11.0-DEV.1011
Commit bb7091c* (2023-12-04 14:58 UTC)
Platform Info:
  OS: macOS (arm64-apple-darwin23.0.0)
  CPU: 10 × Apple M2 Pro
  WORD_SIZE: 64
  LLVM: libLLVM-15.0.7 (ORCJIT, apple-m1)
  Threads: 1 default, 0 interactive, 1 GC (on 6 virtual cores)
Environment:
  JULIA_EDITOR = code
```

(cherry picked from commit e96c13a)
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update nthreads info in versioninfo IanButterworth/julia
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@nilshg