Re: better random numbers

2021-09-17 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.

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

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

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

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

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

better random numbers

2021-09-02 Thread John Rose
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 SplittableRandom, but I think the state of the art is farther enough along to consider