[OSM-talk-nl] [OSM-dev] conversion AND data

[Marc Kessels]

On Mon, 2007-07-30 at 17:02 +0200, Jeroen Dekkers wrote:
> At Mon, 30 Jul 2007 14:55:28 +0100,
> Artem Pavlenko wrote:
> > I  want to convert _all_ NL data into .osm so I disabled bounds  
> > checking. 2AND runs forever and takes lots of memory :(
> > Did you manage to convert the whole dataset?
> > 
> > I'm using latest v5.
> 
> It's important that you have enough memory. 2G is probably the
> minimum. If you have less, then 2AND doesn't fit in memory and you
> will have to wait forever while your operating system is busy swapping
> things in and out.
> 
> Jeroen Dekkers

indeed, I just tested it, and it uses 1.431.296.000 Bytes of memory (on
64 bit system, could be less on a 32 bit system).

the reason behind this huge memory consumption is that it needs to know
all nodes and segments, in order to prevent nodes with the same
coordinates, or multiple segments between the same two nodes.

greetz,
Marc