[Rd] cannot allocate vector of size in merge (PR#765)
Thu, 14 Dec 2000 15:54:23 -0800
Yes, I don't need to specify nsize and vsize for version 1.2.0.
But error is the same, even if start R with default parameters.
It grows in memory and then gives an error.
See output below:
used (Mb) gc trigger (Mb)
Ncells 358534 9.6 597831 16.0
Vcells 3330352 25.5 3736477 28.6
> df <- data.frame(x=1:30000,y=2,z=3)
Error: cannot allocate vector of size 3515625 Kb
Saikat DebRoy wrote:
> >>>>> "viktorm" == viktorm <firstname.lastname@example.org> writes:
> viktorm> Full_Name: Viktor Moravetski
> viktorm> Version: Version 1.2.0 (2000-12-13)
> viktorm> OS: Win-NT 4.0 SP5
> viktorm> Submission from: (NULL) (220.127.116.11)
> viktorm> I've started R (v.1.20) with command:
> viktorm> rgui --vsize 450M --nsize 40M
> viktorm> Then at the command prompt:
> >> gc()
> viktorm> used (Mb) gc trigger (Mb)
> viktorm> Ncells 358534 9.6 41943040 1120
> viktorm> Vcells 3469306 26.5 58982400 450
> >> df <- data.frame(x=1:30000,y=2,z=3)
> >> merge(df,df)
> viktorm> Error: vector memory exhausted (limit reached?)
> Do you really need such a large number of Ncells ? I think not. Try
> starting R without specifying --nsize (and maybe even --vsize). In
> 1.2.0, R would automatically allocate more memory if the intial value
> is not enough. But (as far as I know) it would not decrease the amount
> of memory below the initial amount.
> viktorm> In S-Plus it worked fine, no problems.
> viktorm> It looks like that "R" cannot merge dataframes with
> viktorm> more than 30K rows. It has enough memory, so what limit
> viktorm> was reached and what should I do?
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