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pmap and @parallel have slightly different behaviour #3654

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ViralBShah opened this issue Jul 9, 2013 · 0 comments · Fixed by #4155
Closed

pmap and @parallel have slightly different behaviour #3654

ViralBShah opened this issue Jul 9, 2013 · 0 comments · Fixed by #4155
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breaking This change will break code needs decision A decision on this change is needed parallelism Parallel or distributed computation

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@ViralBShah
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Currently, @parallel schedules work on all processors including myid 1, whereas pmap schedules jobs on all but myid 1. It would be nice to have @parallel do the same thing as pmap, where myid 1 is not used for computation.
@amitmurthy amitmurthy mentioned this issue Aug 26, 2013
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KristofferC pushed a commit that referenced this issue Oct 17, 2023
@DilumAluthgeBot @DilumAluthge
🤖 [master] Bump the Pkg stdlib from b02fb9597 to ffb6edf03 (#51732)
d42415a 
Stdlib: Pkg
URL: https://github.com/JuliaLang/Pkg.jl.git
Stdlib branch: master
Julia branch: master
Old commit: b02fb9597
New commit: ffb6edf03
Julia version: 1.11.0-DEV
Pkg version: 1.11.0
Bump invoked by: @IanButterworth
Powered by:
[BumpStdlibs.jl](https://github.com/JuliaLang/BumpStdlibs.jl)

Diff:
JuliaLang/Pkg.jl@b02fb95...ffb6edf

```
$ git log --oneline b02fb9597..ffb6edf03
ffb6edf03 cache pidlock tweaks (#3654)
550eadd7e Pin registry for MetaGraph tests (#3666)
ee39026b8 Remove test that depends on Random being in the sysimg (#3656)
561508db2 CI: Increase the CI timeout. Update actions. Fix double precompilation. (#3665)
7c7ed63b1 Remove change UUID script it should be uncessary on Julia v1.11-dev (#3655)
a8648f7c8 Precompile: Fix algorithmic complexity of cycle detection (#3651)
0e0cf4514 Switch datastructure Vector -> Set for algorithmic complexity (#3652)
894cc3f78 respect if load-time precompile is disabled (#3648)
3ffd1cf73 Make auto GC message use printpkgstyle (#3633)
```

Co-authored-by: Dilum Aluthge <dilum@aluthge.com>
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breaking This change will break code needs decision A decision on this change is needed parallelism Parallel or distributed computation
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@parallel and Darray use only workers. Minor cleanup of pmap.
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@ViralBShah