[GRASS-dev] [GRASS GIS] #2045: r.to.vect: use less memory

GRASS GIS trac at osgeo.org
Thu Jun 23 12:30:25 PDT 2016

#2045: r.to.vect: use less memory
  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

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).

Ticket URL: <https://trac.osgeo.org/grass/ticket/2045#comment:20>
GRASS GIS <https://grass.osgeo.org>

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