[GRASS-user] r.watershed crashing grass.

[Markus Metz]

With 7201 rows x 7201 columns, the in-memory version should use at most 
1.6GB of RAM. There should be no problem running it all in memory (no -m 
4096) on a machine with 6GB.

Markus M


Milton Cezar Ribeiro wrote:
> Dear all,
>  
> I am trying run a r.watershed command with one 7200x7200 DEM map.
> But after one day running, the system crash without finish the output 
> generation.
> Please, see below (2 warnings before crash).
> By the way I am running grass 6.4.0 SVN (rc4?) under Msys/Vista
> on a 6Gb/64 bits machine.
>  
> Thanks for the help,
>  
> milton
> ===
> GRASS 6.4.0svn (newLocation):c:/Users/famiglia > g.region -p
> projection: 0 (x,y)
> zone:       0
> north:      -23.99986111
> south:      -26.00013889
> west:       -49.00013889
> east:       -46.99986111
> nsres:      0.00027778
> ewres:      0.00027778
> rows:       7201
> cols:       7201
> cells:      51854401
>  
>  
> GRASS 6.4.0svn > g.region rast=FabioASTGTM_S2526W04948_dem
> GRASS 6.4.0svn > r.watershed.exe -m 4096 
> elevation=FabioASTGTM_S2526W04948_dem 
> stream=FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100 
> threshold=100 --o
>  WARNING: Subprocess failed with exit code 255
> WARNING: category information for
>          [FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100] in
>          [PERMANENT] missing or invalid
>  
>  
> ------------------------------------------------------------------------
>
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