[GRASS-user] r.watershed crashing grass.

[Milton Cezar Ribeiro]

Hi Markus,

Thanks for the tips. In fact I made a mistake, because I thought that with
"-m 4096" I was setting 4GB of memory, and unfortunatelly I not payed
attention on memory=4096. Anyway, I tryed with both your suggestions (with
and without -m memory=4096" and still ger error:
-----------
GRASS 6.4.0svn (newLocation):c:/Users/famiglia > r.watershed.exe -m
memory=4096 elevation=FabioASTGTM_S2526W049
48_dem stream=FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100
threshold=100 --o --v
SECTION 1 beginning: Initiating Variables. 5 sections total.
ERROR: G_malloc: unable to allocate 800000 bytes at setup.c:64
WARNING: Subprocess failed with exit code 1
WARNING: category information for
         [FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100] in
         [PERMANENT] missing or invalid
---------
Any other suggestions?

milton

2009/7/25 Markus Metz <markus.metz.giswork at googlemail.com>

> Try to run it all in memory:
> r.watershed.exe elevation=FabioASTGTM_S2526W04948_dem
> stream=FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100 threshold=100
> --o
>
> Should finish in a few minutes.
>
> Where is this 4096 coming from in the original command? Should that be
> memory=4096?
> r.watershed.exe -m memory=4096 elevation=FabioASTGTM_S2526W04948_dem
> stream=FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100 threshold=100
> --o
>
> How far did it get? There are usually message like SECTION 1:, SECTION 2:,
> SECTION 3: etc.
>
> 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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