[GRASS-dev] [GRASS GIS] #2356: r.stream.basisns uses more memory than given in memory option

[GRASS GIS]

#2356: r.stream.basisns uses more memory than given in memory option
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 Reporter:  sbl                      |       Owner:  grass-dev@…              
     Type:  defect                   |      Status:  new                      
 Priority:  normal                   |   Milestone:  7.1.0                    
Component:  Addons                   |     Version:  svn-trunk                
 Keywords:  r.stream.basins, memory  |    Platform:  Linux                    
      Cpu:  x86-64                   |  
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Changes (by hamish):

  * keywords:  r.stream.basisns, memory => r.stream.basins, memory
  * component:  Raster => Addons


Comment:

 were the input maps CELL, FCELL or DCELL?

 fwiw here's the code,

 {{{
  opt_swapsize->description = _("Maximum memory used in memory swap mode
 (MB)");
  opt_swapsize->answer = "300";
 ...
  number_of_segs = (int)atof(opt_swapsize->answer);
  number_of_segs = number_of_segs < 32 ? (int)(32 / 0.12) : number_of_segs
 / 0.12;
 }}}

 if the stream_rast= option is used then two ram_create_map()s happen.
 Likely the above number_of_segs isn't taking that into account.

 did it work ok when you halved the memory= option?


 Hamish

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/2356#comment:1>
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