[Numpy-discussion] NEP: Random Number Generator Policy
robert.kern at gmail.com
Mon Jun 4 13:58:59 EDT 2018
On Mon, Jun 4, 2018 at 2:55 AM Kevin Sheppard <kevin.k.sheppard at gmail.com>
> I’m not sure if this is within the scope of the NEP or an implementation
> detail, but I think a new PRNG should use platform independent integer
> types rather than depending on the platform’s choice of 64-bit data model.
> This should be enough to ensure that any integer distribution that only
> uses integers internally should produce identical results across uarch/OS.
Probably an implementation detail (possibly one that ought to be worked out
in its own NEP).
I know that I would like it if the new system had all of the same
distribution methods as RandomState currently does, such that we can drop
in the new generator objects in places where RandomState is currently used,
and everything would still work (just with a different stream). Might want
to add a statement to that effect in this NEP. I think it's likely "good
enough" if the integer distributions now return uint64 arrays instead of
uint32 arrays on Windows.
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