[R] Error in memory.size(size) when calling R in batch mode (but not in interactive mode)

[Milan Bouchet-Valat]

Le vendredi 09 novembre 2012 à 10:43 +0000, Franckx Laurent a écrit :
> Dear all
> 
> I use a 64 bit Windows7 system with 16 GB memory.
> I have run an R script in batch mode with the following command:
>       R CMD BATCH  masterassignment_2012_11_09.r --save
> The execution was terminated with the following error message:
> 
>         Error in memory.size(size) :  don't be silly!: your machine
> has a 4Gb address limit
> 
> 
> I never get this error message in an interactive session (and I don't
> think I should, taking into account the system). To be sure, I have
> just double checked this again in an interactive session, and it works
> fine.
> 
> There are two possible explanations I can think of:
> a) The command line doesn't "know" the system, i.e. it "thinks" it
> works on a 32bit system (is this possible at all?)
> b) I run R on a remote desktop, and the command line thinks I am
> calling R from my laptop
c) When you run "R CMD BATCH", the 32-bit version of R is used, while
when you run it interactively, you start the 64-bit version.

To check this, add sessionInfo() to your batch script, and have a look
at the output.


Hope this helps

> Anyway, I wouldn't know how to solve this.
> 
> In case you wonder why I run R in batch mode at all: I have a series
> of iterations in my model, each of which is taking huge amount of
> memory. Although I regularly impose a garbage collection, after two or
> three iterations, R crashes when used interactively. I thought that
> running and exiting R after each iteration would be the only effective
> way to "clean up" memory. If you have any other solutions, I would be
> happy to hear about them as well.
> 
> 
> 
> Laurent Franckx, PhD
> VITO NV
> Boeretang 200, 2400 MOL, Belgium
> Tel. + 32 14 33 58 22
> Skype: laurent.franckx
> laurent.franckx at vito.be
> Visit our website: www.vito.be/english and http://www.vito.be/transport
> 
> 
> 
> 
> 
> 
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