[GRASS-dev] [GRASS GIS] #1800: v.kernel crashes after long execution

[GRASS GIS]

#1800: v.kernel crashes after long execution
------------------------+---------------------------------------------------
 Reporter:  arencambre  |       Owner:  grass-dev@…              
     Type:  defect      |      Status:  new                      
 Priority:  normal      |   Milestone:  6.4.3                    
Component:  Vector      |     Version:  6.4.2                    
 Keywords:              |    Platform:  MSWindows 7              
      Cpu:  x86-64      |  
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Comment(by mmetz):

 Replying to [comment:5 arencambre]:
 > Sorry, meant that I have over 100GB free.
 >
 > Running
 >
 {{{
 r.mapcalc "mockingbird_and_central_high_resolution = rand(0.0, 1.0)"
 }}}
 > appeared to be successful

 Strange. I tried to reproduce this error with the current release branch
 (6.4.svn) and with trunk on a laptop with Fedora Linux 16 64bit, Intel
 core i5 at 2.4 GHz and 4 GB RAM.
 I followed this tutorial:

 http://qgis.spatialthoughts.com/2012/07/tutorial-making-heatmaps-using-
 qgis-and.html

 and used this dataset:

 http://data.london.gov.uk/datafiles/crime-community-safety/police-uk-
 crime-data-surrey.zip

 with region settings:

 g.region n=318266 s=117316 e=593618 w=363772 res=100 -p

 No success, i.e. v.kernel finishes successfully in a reasonable amount of
 time:

 {{{
 GRASS 6.4.svn

 42 MB RAM used by v.kernel

 uniform kernel
 real    1m8.270s
 user    0m28.876s
 sys     0m37.474s

 gaussian kernel
 real    19m37.177s
 user    9m4.927s
 sys     9m59.545s


 GRASS 7

 19 MB RAM used by v.kernel

 uniform kernel
 real    1m8.286s
 user    0m43.967s
 sys     0m22.599s

 gaussian kernel
 real    5m24.772s
 user    4m0.915s
 sys     1m15.982s
 }}}

 I suggest to update to GRASS 6.4.3RC1.

 Markus M

-- 
Ticket URL: <http://trac.osgeo.org/grass/ticket/1800#comment:6>
GRASS GIS <http://grass.osgeo.org>