Thanks Roger
I feel we've got a low RAM machine which would need a bit of an uplift
(recent server though)!
The linux machine is unfortunately also with 4Gb of RAM
But I persist to say it would be interesting to have within R a way of
automatically performing swapping memory if needed ...
On Thu, 13 Sep 2007, Didier Leibovici wrote:
Thanks Roger
I feel we've got a low RAM machine which would need a bit of an uplift
(recent server though)!
The linux machine is unfortunately also with 4Gb of RAM
But I persist to say it would be interesting to have within R a way of
I think R will never do it's own memory swapping, as that is a typical
OS task. There are however several developments (provided in add-on
packages) that will not load all data in memory at start-up, but instead
call some data base whenever a data element is needed. You might search
r-help for
-details?w=36493
Tom Hengl
http://spatial-analyst.net
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Edzer J. Pebesma
Sent: Thursday, September 13, 2007 12:15 PM
To: [EMAIL PROTECTED]
Cc: r-sig-geo@stat.math.ethz.ch
Subject: Re: [R-sig-Geo] memory Usage
The thing is I am using a function a recursive algorithm on multi array
which could probably be rewritten the way you are describing (subsetting
via a database for storage)
but ... that would have to be rewritten!
thanks again I thanks to the other comments as well
Didier
Roger Bivand wrote:
These days in GIS on may have to manipulate big datasets or arrays.
What is the best way of tuning the R memory ?
or how can we not worry about the memory usage
i.e. could it that if it is needed it will swap on the disk (the system
I suppose)
That means declaring even more RAM than existing ...
These days in GIS on may have to manipulate big datasets or arrays.
Here I am on WINDOWS I have a 4Gb
my aim was to have an array of dim 298249 12 10 22 but that's 2.9Gb
It used to be (maybe still is?) the case that a single process could only
'claim' a chunk of max size 2GB on Windows.
