#2404: winGRASS: G_calloc error in v.to.rast
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Reporter: neteler | Owner: grass-dev@…
Type: defect | Status: new
Priority: normal | Milestone: 7.0.0
Component: Vector | Version: svn-trunk
Keywords: v.to.rast | Platform: MSWindows 7
Cpu: Unspecified |
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winGRASS (32bit binaries):
v.rast.stats --> which calls v.to.rast:
{{{
ERROR: G_calloc: unable to allocate 236326912 * 1 bytes of memory at
raster.c:83
ERROR: An error occurred while converting vector to raster
}}}
Computational region:
{{{
g.region rast=somemap@LANDCOVER -p
projection: 99 (Lambert Azimuthal Equal Area)
zone: 0
datum: etrs89
ellipsoid: grs80
north: 5416100
south: 941500
west: 1547000
east: 7316700
nsres: 100
ewres: 100
rows: 44746
cols: 57697
cells: 2581709962
g.region vect=othermap@LANDCOVER -p
projection: 99 (Lambert Azimuthal Equal Area)
zone: 0
datum: etrs89
ellipsoid: grs80
north: 5310000
south: 940000
west: 1540000
east: 6530000
nsres: 100
ewres: 100
rows: 43700
cols: 49900
cells: 2180630000
}}}
System:
* winGRASS 7.1
* RAM 32 GB
Also reported here:
* http://lists.osgeo.org/pipermail/grass-user/2009-April/050076.html
* http://lists.osgeo.org/pipermail/grass-user/2009-April/050074.html
* http://lists.osgeo.org/pipermail/grass-user/2009-April/050075.html
The issue might be the row cache in v.to.rast:
*
http://trac.osgeo.org/grass/browser/grass/trunk/scripts/v.rast.stats/v.rast.stats.py#L137
* http://grass.osgeo.org/grass71/manuals/v.to.rast.html
with rows=4096 (Number of rows to hold in memory by default).
According to the latter email, the memory consumption would be (in GB,
plus overhead):
{{{
> 4096 * 44746 rows * 8 bytes /1024 /1024 /1024
[1] 1.36554
}}}
Given the 32GB of RAM, that should be ok (but even for winGRASS 7 32bit?).
Maybe the row cache in v.to.rast should be "auto" according to the amount
of pixels in a row?
BTW: seen again here:
* https://gis.stackexchange.com/questions/102273/error-g-calloc-v-to-rast
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Ticket URL: <https://trac.osgeo.org/grass/ticket/2404>
GRASS GIS <http://grass.osgeo.org>