On Wed, 30 Aug 2023 15:51:06 GMT, Francesco Nigro <[email protected]> wrote:
>> Care to elaborate? `Random` with an explicit seed should be more than enough
>> to have perfectly reproducible sequences for our case (`SplittableRandom`
>> uses a different algorithm by default with a longer period, but I can't see
>> how this'd be relevant to this case.)
>>
>>
>> * If two instances of {@code Random} are created with the same
>> * seed, and the same sequence of method calls is made for each, they
>> * will generate and return identical sequences of numbers.
>
> Even with the same seed only with large numbers you get statistically a
> similar distribution,m (not the same values, but the javadoc said differently
> which is quite surprising to me!), but splittable random is actually
> producing the same exact sequences. You care about confusing branch
> predictors here I suppose (or the JIT, maybe too) but not to add noise or
> variance with fewer samples nor you are interested to the security part of it
> (cause random use the chaos generated securely by the OS/HW iirc).
I have to check in my notes why I used splittable rmd and will update this
thread :)
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PR Review Comment: https://git.openjdk.org/jdk/pull/15448#discussion_r1310491098
