[PATCH] D30684: [libFuzzer] Don't use same seed for all parallel jobs

[Kostya Serebryany via Phabricator via llvm-commits]

kcc added a comment.

In https://reviews.llvm.org/D30684#694651, @vitalybuka wrote:

> In https://reviews.llvm.org/D30684#694594, @kcc wrote:
>
> > it's not easy to emulate -jobs in a script, because -jobs=N works together with -workers=M and if N > M new jos start after some old die.
>
>
> And user has to go this inconvenient way if jobs and seed both are desired.


You are the first user to request this :) 
And you are also not really a user, but a developer :)

> I agree that 
>  convenience(jobs+seed) < convenience(jobs)
>  complexity(jobs) < convenience(jobs)
>  but also 
>  complexity(jobs+seed) < complexity(jobs)
> 
> It's still not clear to my why complexity(jobs+seed) > convenience(jobs+seed)

With you change, you will also need to document the non-intuitive behavior. 
In all such cases it's easier to not have non-intuitive behavior


https://reviews.llvm.org/D30684