[GRASS-user] r.stream.extract error

[Giuseppe Amatulli]

Hi,
I'm using the r.stream.extract grass command

r.stream.extract elevation=elv  accumulation=upa threshold=0.5
 depression=dep     direction=dir  stream_raster=stream memory=35000 --o
--verbose

where the elv is raster of 142690 *  80490 = 11,485,118,100 cell

and I get this error

12.97% of data are kept in memory
Will need up to 293.52 GB (300563 MB) of disk space
Creating temporary files...
Loading input raster maps...
0..3..6..9..12..15..18..21..24..27..30..33..36..39..42..45..48..51..54..57..60..63..66..69..72..75..78..81..84..87..90..93..96..99..100
ERROR: Unable to load input raster map(s)

According to the help manual the memory=35000 should be set in according to
the overall memory available. I set the HPC upper memory limit to 40G.

I try several combination of these parameters  but i still get the same
error.
If the r.stream.extract is based on r.watershed than the segmentation
 library should be able to handle a huge raster.

Anyone know how to over pass this limitation/error ?

Thank you
Best
-- 
Giuseppe Amatulli, Ph.D.

Research scientist at
Yale School of Forestry & Environmental Studies
Yale Center for Research Computing
Center for Science and Social Science Information
New Haven, 06511
Teaching: http://spatial-ecology.org
Work:  https://environment.yale.edu/profile/giuseppe-amatulli/
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