[R] How to adjust the stack size of R

[Prof Brian Ripley]

On Mon, 2 Apr 2012, Xiaobo Gu wrote:

>
>
>>> You would need do compile your own copy of R and increase the stack
>>> size,
> Can we do this at runtime?

That depends on your unstated OS.  Uwe gave you an answer for Windows. 
On many other OSes, the stack size is set up by the OS when the 
process is started, and your OS documentation will tell you how to 
increase it.

>
>
>>> You need at least 76252 obs and that means the design matrix needs > 46
>>> Gbyte! Hence a sensible calculation is not really possible unless you
>>> have really big machines around.

> We do have big machines, but we don't have more obs for this data, so we will revise the algorithm to try less combinations data set size.

He didn't say 'big machine'! I doubt it you could do anything useful 
with less than 512GB RAM.

But more seriously, fitting a GLM (this message gives no context, but 
I think that was the task) is a O(p^3) calculation, so you would also 
need a great deal of patience.

>
>
> Regards,
>
> Xiaobo Gu
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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