#2045: r.to.vect: use less memory
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Reporter: mlennert | Owner: grass-dev@…
Type: enhancement | Status: new
Priority: normal | Milestone: 7.0.5
Component: Raster | Version: svn-trunk
Resolution: | Keywords: r.to.vect
CPU: Unspecified | Platform: Unspecified
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Comment (by mmetz):
Replying to [comment:19 mlennert]:
>
> Data and info provided via private mail.
I have received the data, thanks!
>
> Previous posters have also reported that setting GRASS_VECTOR_LOWMEM
didn't make much of a difference, so maybe the problem is there ?
I don't think so. Without GRASS_VECTOR_LOWMEM, v.build needs about 26 GB
of RAM. With GRASS_VECTOR_LOWMEM, v.build needs about 11 GB of RAM but is
about 4.5 times slower, that is expected because some temporary data are
kept on disk and not in memory. File sizes are 6.4 GB for coor (the actual
vector features), 3.1 GB for topo (main vector topology), 11 GB for sidx
(spatial index) and 922 MB for cidx (category index).
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Ticket URL: <https://trac.osgeo.org/grass/ticket/2045#comment:20>
GRASS GIS <https://grass.osgeo.org>