#3801: r.watershed crashing on large rasters -----------------------+------------------------- Reporter: dnewcomb | Owner: grass-dev@… Type: defect | Status: new Priority: normal | Milestone: 7.6.1 Component: Default | Version: 7.4.1 Resolution: | Keywords: CPU: x86-64 | Platform: Linux -----------------------+-------------------------
Comment (by mmetz): Replying to [ticket:3801 dnewcomb]: > 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 > invalid > WARNING: category information for [cfs_drain] in [PERMANENT] missing or > invalid > > I have tried this with Memory=100000 MB The memory option has an effect only when using the -m flag. I don't think r.watershed in all-in-memory mode (no -m flag) is supporting such large input maps. > > 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? -- Ticket URL: <https://trac.osgeo.org/grass/ticket/3801#comment:1> GRASS GIS <https://grass.osgeo.org>
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