Re: better random numbers

2021-09-16 Thread John Rose
On Sep 7, 2021, at 4:48 AM, Stefan Zobel mailto:splitera...@gmail.com>> wrote: That "influential researcher" is probably Sebastiano Vigna who has indeed harsh words on PCG: https://pcg.di.unimi.it/pcg.php That link can also be found on ONeill’s blog, along with her responses. https://www.pcg-ra

Re: better random numbers

2021-09-07 Thread Raffaello Giulietti
On 2021-09-07 13:48, Stefan Zobel wrote: On this blog entry (year 2017), Lemire is not giving any technical or scientific argument in favor or against PCG. He also refers to, and quotes from, a blog entry (year 2015) of an influential researcher (whose work he respects) suggesting the entry

Re: better random numbers

2021-09-07 Thread Stefan Zobel
> > On this blog entry (year 2017), Lemire is not giving any technical or > scientific argument in favor or against PCG. > > He also refers to, and quotes from, a blog entry (year 2015) of an > influential researcher (whose work he respects) suggesting the entry has > harsh words about PCG. The fac

Re: better random numbers

2021-09-07 Thread Raffaello Giulietti
Hello, On 2021-09-05 16:43, Andrew Haley wrote: On 9/3/21 12:35 AM, John Rose wrote: The reference I’d like to give here is to Dr. Melissa O’Neill’s website and articles: I'm quite sceptical. Anyone who says a (non-cryptographic) random- number generator is "hard to predict" is either quite

Re: better random numbers

2021-09-06 Thread John Rose
On Sep 5, 2021, at 3:23 PM, John Rose mailto:john.r.r...@oracle.com>> wrote: To increase throughput use vectors or generate more than one random sample per crank turn. But back to back aes steps are probably always twice the latency of a single wide multiply. So I think there might be some more

Re: better random numbers

2021-09-05 Thread John Rose
On Sep 5, 2021, at 7:44 AM, Andrew Haley wrote: > > On 9/3/21 12:35 AM, John Rose wrote: > >> The reference I’d like to give here is to Dr. Melissa O’Neill’s >> website and articles: > > I'm quite sceptical. Anyone who says a (non-cryptographic) random- > number generator is "hard to predict"

Re: better random numbers

2021-09-05 Thread Andrew Haley
On 9/3/21 12:35 AM, John Rose wrote: > The reference I’d like to give here is to Dr. Melissa O’Neill’s > website and articles: I'm quite sceptical. Anyone who says a (non-cryptographic) random- number generator is "hard to predict" is either quite naive or in a state of sin, (;-) and while O’Neil

Re: better random numbers

2021-09-02 Thread John Rose
On Sep 2, 2021, at 4:35 PM, John Rose mailto:john.r.r...@oracle.com>> wrote: The state of the art for PRNGs (pseudo-random number generators) is much advanced since ju.Random was written. Surely at some point we will refresh our APIs that produce random numbers. In fact, we have added Splittabl