[GRASS-dev] [GRASS GIS] #1429: r.watershed large grids

[GRASS GIS]

#1429: r.watershed large grids
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 Reporter:  dnewcomb     |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  7.0.0                    
Component:  Default      |     Version:  svn-trunk                
 Keywords:  Large grids  |    Platform:  Linux                    
      Cpu:  x86-64       |  
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 tried r.watershed on a large elevation grid (51000 rows, 133000 columns,
 6783000000 cells) with the following options:

  r.watershed -m elevation=nc_20ft_ncfpm at statewide threshold=500000
 accumulation=nc_flow_accum_wsh at statewide drainage=nc_direct_wsh at statewide
 basin=nc_wshed_label_wsh stream=nc_stream_seg_wsh
 half_basin=nc_half_basin_wsh memory=8000

 and got the following output:

 SECTION 1 beginning: Initiating Variables. 5 sections total.
 SECTION 1a: Mark masked and NULL cells
 segment_format(fd,1,-803458658,1,4096,8): illegal value(s)
 seg_open(): illegal configuration parameter(s)
 segment_format(fd,1,-803458657,1,262144,16): illegal value(s)
 seg_open(): illegal configuration parameter(s)
 SECTION 1b: Determining Offmap Flow.
 Subprocess failed with exit code 11
 category information for [nc_flow_accum_wsh at statewide] in [statewide]
 missing or invalid
 category information for [nc_direct_wsh at statewide] in [statewide] missing
 or invalid
 category information for [nc_wshed_label_wsh] in [statewide] missing or
 invalid
 category information for [nc_stream_seg_wsh] in [statewide] missing or
 invalid
 category information for [nc_half_basin_wsh] in [statewide] missing or
 invalid
 (Sat Aug 27 11:38:42 2011) Command finished (45054 sec)

 GRASS 7.0 svn pull from 8/17/2011

 looking at raster/r.watershed/seg/cseg.h

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1429>
GRASS GIS <http://grass.osgeo.org>