[R] Get identical results for parallel and sequential?

[slbfelix]

Hi All, 

I have a question about R parallel computing by using snowfall. 

How can I set the seeds on parallel workers to get the same result as
sequential mode? 

For example: 

> sfSapply(c(1,1),rnorm) 
[1]  1.823082 -2.222052 
> rnorm(2) 
[1] -0.5179967 -1.0807196 

How to get the identical result? 

Thanks. 
Libo

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