[erlang-questions] Erlang random number generator weak?

[mats cronqvist]

"Adam Kelly" <cthulahoops@REDACTED> writes:


> So, is it an accepted fact that two processes started at almost the
> same time will produce highly correlated random sequences?

  not afaik.

  but i think it is (possibly un-)common knowledge that given very
  similar seeds, two sequences will start out similarly.

  the mess below shows the 10:th element of 10 sequences with similar
  seeds. the sequences diverges pretty rapidly.

  mats

1> L10=lists:seq(1,10).
2> [(fun()->random:seed(1,2,N), hd(lists:reverse([random:uniform(1000)||_<-L10])) end)() || N <- L10].

 [96,449,802,154,507,859,212,565,917,270]