r.watershed crashing on large rasters
|Reported by:||dnewcomb||Owned by:|
Attempting to run r.watershed on a 13.7 billion pixel raster elevation layer
r.watershed --overwrite elevation=cfsdem05 accumulation=cfs_accum drainage=cfs_drain
SECTION 1a (of 4): Initiating Memory. WARNING: Subprocess failed with exit code 11 WARNING: category information for [cfs_accum] in [PERMANENT] missing or
WARNING: category information for [cfs_drain] in [PERMANENT] missing or
I have tried this with Memory=100000 MB
Does r.watershed need more than 100GB of memory to run on a 14 billion pixel raster?
The raster is linked via r.external, doe it need to be imported ?
Looking backwards, the enhancement to run large raster was done for GRASS 7.0 , is this a regression, or was it not tested to larger than 9 billion cells?