[R] cannot allocate vector of size 1215000 Kb

[John Kapsomenakis]

Dear All,
I'm running the latest R on SUSE 10.0. After read in a huge data CDF file 
I tried to  process the only variable variable using the comands

aek<-open.ncdf('C:/Monthly/CRU/Crutmp Europe.CDF')
v1<-aek$var[[1]]
gugus<-get.var.ncdf(aek, v1)

But I can't because of this message
Error: cannot allocate vector of size 1215000 Kb

I'm now hoping for some help
Any tips to get out of it?

Thanks in advance.
john