[Rd] memory trouble
Jens Oehlschlägel
joehl@web.de
Wed, 3 Jan 2001 17:02:33 +0100
I don't know whether this belongs to r-devel or rather r-help.
Under RW1.11 --nsize=8M --vsize=512M I could
n <- 500000
m <- 20
x <- matrix(rnorm(n*m), ncol=m, nrow=n)
gc()
> n <- 500000
> m <- 20
> x <- matrix(rnorm(n*m), ncol=m, nrow=n)
> gc()
free total (Mb)
Ncells 8190509 8388608 160
Vcells 57033698 67108864 512
# under RW1.20 --vanilla the same fails, some testing shows
n <- 500000
m <- 20
x <- matrix(ncol=m, nrow=n)
x <- matrix(NA, ncol=m, nrow=n)
x <- matrix(0, ncol=m, nrow=n)
x <- matrix(rep(NA, n*m), ncol=m, nrow=n)
x <- matrix(rep('0', n*m), ncol=m, nrow=n)
x <- matrix(rep(0, n*m), ncol=m, nrow=n)
x <- matrix(rep('0', n*m), ncol=m, nrow=n)
gc()
x <- matrix(rep('0', n*m), ncol=m, nrow=n)
x <- matrix(rnorm(n*m), ncol=m, nrow=n)
> n <- 500000
> m <- 20
>
> x <- matrix(ncol=m, nrow=n)
> x <- matrix(NA, ncol=m, nrow=n)
> x <- matrix(0, ncol=m, nrow=n)
> x <- matrix(rep(NA, n*m), ncol=m, nrow=n)
> x <- matrix(rep('0', n*m), ncol=m, nrow=n)
Error: cannot allocate vector of size 39062 Kb
> x <- matrix(rep(0, n*m), ncol=m, nrow=n)
Error: cannot allocate vector of size 78125 Kb
> x <- matrix(rep('0', n*m), ncol=m, nrow=n)
Error: cannot allocate vector of size 39062 Kb
> gc()
used (Mb) gc trigger (Mb)
Ncells 174208 4.7 350000 9.4
Vcells 11109574 84.8 24307903 185.5
> x <- matrix(rep('0', n*m), ncol=m, nrow=n)
> x <- matrix(rnorm(n*m), ncol=m, nrow=n)
Error: cannot allocate vector of size 78125 Kb
Experimenting with --min-nsize=8M --min-vsize=512M --max-nsize=8M --max-vsize=512M did not help.
What am I doing wrong?
Regards
Jens Oehlschlägel
(Research Consultant)
PIII NT4.0 Service Pack 6, 1 GB RAM, Physical Memory available due to task manager: 934600 K
> version
_
platform i386-pc-mingw32
arch x86
os Win32
system x86, Win32
status
major 1
minor 2.0
year 2000
month 12
day 15
language R
_______________________________________________________________________
1.000.000 DM gewinnen - kostenlos tippen - http://millionenklick.web.de
IhrName@web.de, 8MB Speicher, Verschluesselung - http://freemail.web.de
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._