[R] Memory Limits in Ubuntu Linux

[Uwe Ligges]

davidkat at davidkatzconsulting.com wrote:
> I am an R user trying to get around the 2Gig memory limit in Windows, so 
> here I am days later with a working Ubuntu, and R under Ubuntu. But - the 
> memory problems seem worse than ever. R code that worked under 
> windows fails, unable to allocate memory.
> 
> Searching around the web, it appears that the problem may be the ability to 
> find contguous memory for my big vectors, but a fresh boot of Ubuntu does 
> not help either.
> 
> Which way to go?
> 
> 1) Try to install 64-bit version for bigger address space. Would this help? Is 
> this workable for my Athlon 64 Dual-core? (the live cd seems to work but I 
> never got it to boot after a disk install, but then the 386 version was no better 
> until I learned more about Grub...I could try again if this might solve the 
> problem)

If you really have got such amounts of RAM in that machine, it should be 
worth trying.

Uwe Ligges


> 2) Recompile R to get bigger memory capability? (I'll have to cross-post to 
> some R forums too)
> This will be a challenge for a Linux newbie...like me.
> 
> 3) Any other suggestions? My goal is to create a bigger neural network than 
> fits in my Windows R version.