r250 --> r1270?

Heiko Bauke heiko.bauke@physik.uni-magdeburg.de
Mon Feb 13 15:49:00 GMT 2006


On Sat, 11 Feb 2006 16:22:05 +0100 (CET)
"H. G. Katzgraber" <katzgraber@phys.ethz.ch> wrote:

> I have noticed that in the random number generator selection 
> you list r250. Would it be possible to add r1279? It is 
> almost as fast as r250, yet r250 is known to give wrong 
> results.

all generators of the lagged fibonacci type with xor, addition or
subtraction do have the same statistical defects [1]. For that reason
r1270 will give wrong results in all MC simulations where r250 is known
to give wrong results. It just takes a little bit longer (in terms of
MC steps).


[1] http://de.arxiv.org/abs/cond-mat/0307138 

-- Ich habe ein einfaches Rezept, um fit zu bleiben - 
-- Ich laufe jeden Tag Amok. (Hildegard Knef)
-- Supercomputing in Magdeburg @ http://tina.nat.uni-magdeburg.de
--                 Heiko Bauke @ http://www.uni-magdeburg.de/bauke

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