Hi David, You need to seed the random number generator upon creation, default contructed it will always be in the same state. Best, Dee On Mon, Mar 8, 2010 at 4:29 PM, David Kaplan wrote:

I'm using the following code to generate a random 64 bit value:

boost::mt19937 rng; boost::uniform_int r(0,0xffffffffffffffff); boost::variate_generator > gen(rng, r); uint64_t id = gen();

However it seems it's not random on each execution of the program? (rather I get the same value again). How do I randomise this properly?

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