[R-SIG-Mac] malloc problem R2.6.1 on leopard

[Benilton Carvalho]

The first thing to notice is that:

?expand.grid

might be useful...

The second is that:

allsubsets(30) will return you an object of 2^30 rows by 30 columns....

How big would an object like that be???

4*(2^30)*30/(1024^3) = 120GB....

b

On Nov 30, 2007, at 11:17 AM, Hans Kestler wrote:

> Hi,
> I just installed the latest release (2.6.1) on Leopard (Mac Pro -  
> Quad-Core
> Intel Xeon, 16Gb).
> Calling :
>
> allsubsets <- function (n)
> +   {
> +     if (n > 0)
> +       rbind(cbind(TRUE, Recall(n - 1)), cbind(FALSE, Recall(n -1)))
> +   }
>> a<-allsubsets(30)
>
> I get the following error:
>
> Error: cannot allocate vector of size 1.5 Gb
>
> R(576,0xa04f8f60) malloc: *** mmap(size=1610616832) failed (error  
> code=12)
> *** error: can't allocate region
> *** set a breakpoint in malloc_error_break to debug
> R(576,0xa04f8f60) malloc: *** mmap(size=1610616832) failed (error  
> code=12)
> *** error: can't allocate region
> *** set a breakpoint in malloc_error_break to debug
>
> Any ideas? Thank you.
>
> Hans
>
> 	[[alternative HTML version deleted]]
>
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