[GRASS-user] G_realloc error with v.voronoi

[spiderplant0]

I have a shapefile containing points that I want to make into a voronoi
diagram. I import the shapefile into GRASS and then run v.voronoi, but I
then get this error... 

C:\Program Files (x86)\Quantum GIS Wroclaw>v.voronoi --o input=pass1 at mapset1
output=pass2
Reading sites...
Voronoi triangulation...
Building topology for vector map <pass2>...
Registering primitives...
ERROR: G_realloc: unable to allocate 15348004 bytes at struct_alloc.c:133

Its quite a big file (1.5 million points, GRASS database file is 368MB,
vector files total 112MB) so maybe its not a bug but what I'm trying to do
is just too big (I read somewhere about a 2GByte limit for 32-bit apps or
something like that).

The thing is I'm kind of stuck as I cant think how you could make a voronoi
diagram by splitting the source into smaller files and trying to join them
up again.

What is GRASS's memory limit? Should I get more RAM? Would using Linux
instead of Windows help. Can anyone think of things I can experiment with to
reduce the amount of memory used?

I'm on Windows7 64 bit, 4GB RAM, GRASS 6.4.250870M (2012)
Thanks. 


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