[GRASS-dev] [GRASS GIS] #438: v.distance -a uses too much memory

GRASS GIS trac at osgeo.org
Wed Jul 24 05:32:44 PDT 2013


#438: v.distance -a uses too much memory
------------------------------------------+---------------------------------
 Reporter:  mlennert                      |       Owner:  grass-dev@…              
     Type:  defect                        |      Status:  new                      
 Priority:  major                         |   Milestone:  7.0.0                    
Component:  Vector                        |     Version:  svn-trunk                
 Keywords:  v.distance memory allocation  |    Platform:  Unspecified              
      Cpu:  Unspecified                   |  
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Comment(by mlennert):

 Replying to [comment:1 neteler]:
 > Is this still an issue with the current 7.SVN version?

 The code has changed.

 I just checked on a machine with 8GB of RAM and

 v.distance -a -p from=ssbel from_type=centroid to=ssbel to_type=centroid
 upload=dist col=dist > dist_ssbel

 where ssbel has a bit more than 20000 centroids, still crashed after
 memory _and_ swap go up to their max levels.

 I'm aware that we're talking about 400,000,000 pairs of points, but I'm
 still hoping that there is a way to avoid such heavy memory usage.

 Moritz

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Ticket URL: <https://trac.osgeo.org/grass/ticket/438#comment:2>
GRASS GIS <http://grass.osgeo.org>



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