[R-sig-hpc] R_alloc limit?

[Dirk Eddelbuettel]

On 28 December 2012 at 11:20, "Jens Oehlschlägel" wrote:
| Hi,
| 
| While doing some experiments with large in-RAM vectors I find that R_alloc
| won't give me 2GB of RAM or more although there is sufficient RAM available. My
| setup is the following:
| 
| Win 7 64 bit, Rwin 64
| Machine has 16 GB - more than 14 GB free
| Then I allocate 4GB within R: double(2^29)
| When trying to R_alloc 2GB it fails with 'can't allocate'
| although I have 10 GB free and within R I can still allocate much more (tested
| up to 12GB).
| 
| I don't want to use allocVector because the C-function that does memory size
| calculations and allocation doesn't know about SEXPs.
| 
| Do I need any specifc setting? 
| Switching to Linux? 

Yes. I certainly would. It simply works. 

To paraphrase what Simon said off-(another)-list, you get what you deserve if
you try HPC on a Windows system.

Dirk

| C_alloc? malloc?
| 
| Kind regards
| 
| 
| Jens Oehlschlägel
| 
| 
| 
| > version
|                _                           
| platform       x86_64-w64-mingw32          
| arch           x86_64                      
| os             mingw32                     
| system         x86_64, mingw32             
| status                                     
| major          2                           
| minor          15.2                        
| year           2012                        
| month          10                          
| day            26                          
| svn rev        61015                       
| language       R                           
| version.string R version 2.15.2 (2012-10-26)
| nickname       Trick or Treat
| 
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-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com