17 Oct
2007
17 Oct
'07
7:14 a.m.
On Sat, 2007-10-13 at 18:33 -0300, Isaac Dupree wrote:
GHC StdGen's random and randomR are somewhat slow. I found that changing to a custom ((x*a + b) `mod` c) random-generator (instance of RandomGen) much sped things up (since nothing depended on the random numbers being good quality).
Yes, I also switched now to a simple custom linear congruential generator (which is random enough for this task) and restructured the code a bit and am happy now since it is even a bit faster than the Java implementation :) Thanks, Thoralf