[GRASS-dev] winGRASS OSGeo4W crashes when switching to 3D view

GRASS GIS GRASS GIS developer
1

Hi,

while teaching our IRSAE course
(http://gis.cri.fmach.it/grass-gis-and-r-course/) we did not have
success to perform a NVIZ exercise on Windows.

Switching to 3D mode leads to a GUI crash when loading the "elevation"
DEM. We used "elevation" in the new (yet to be improved) Piemont
location [1].
No error message shown, just crash.

If anyone wants to test:

wget http://geodati.fmach.it/gfoss_geodata/grassdata_course_version1.7z

# unpack (7a is contained eg in p7zip-plugins package):
7z x grassdata_course_version1.7z

--> grassdata_piemonte/user1

Note: It is a new issue since 7.0.1, in 7.0.0 which is installed on
the same machine no such issue.

I suspect that it is the elevation map size causing the issue since
the DEM is larger than that of the NC dataset.

Markus

[1] https://trac.osgeo.org/grass/wiki/SampleDataset/Italy/Piemont

2

Markus Neteler wrote

Hi,

while teaching our IRSAE course
(http://gis.cri.fmach.it/grass-gis-and-r-course/) we did not have
success to perform a NVIZ exercise on Windows.

Switching to 3D mode leads to a GUI crash when loading the "elevation"
DEM. We used "elevation" in the new (yet to be improved) Piemont
location [1].
No error message shown, just crash.

If anyone wants to test:

wget http://geodati.fmach.it/gfoss_geodata/grassdata_course_version1.7z

# unpack (7a is contained eg in p7zip-plugins package):
7z x grassdata_course_version1.7z

--> grassdata_piemonte/user1

Note: It is a new issue since 7.0.1, in 7.0.0 which is installed on
the same machine no such issue.

I suspect that it is the elevation map size causing the issue since
the DEM is larger than that of the NC dataset.

Markus

I confirm this. in large regions, 3D view crashes.

tested here with

System Info
GRASS Version: 7.0.2

and

System Info
GRASS Version: 7.1.svn

and the piemonte data set (but also with other large rasters):

g.region -p -a raster=elevation@PERMANENT align=elevation@PERMANENT
projection: 1 (UTM)
zone: 32
datum: wgs84
ellipsoid: wgs84
north: 5146000
south: 4879500
west: 313000
east: 517000
nsres: 25
ewres: 25
rows: 10660
cols: 8160
cells: 86985600

attached a debug=3 output ( wxnviz_debug.txt
<http://osgeo-org.1560.x6.nabble.com/file/n5243063/wxnviz_debug.txt&gt; )

-----
best regards
Helmut
--
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3

Hi,

it crashes because it can’t allocate enough memory. There must be some limit given by the operating system how much memory it can allocate (altogether and by chunks). I assume the 64-bit version could help with this.
If you run
m.nviz.image elevation_map=elevation output=xxx format=ppm size=640,480

with large regions, you will get:

Loading raster map elevation@PERMANENT…
Current region rows: 13500, cols: 15000
ERROR: G_malloc: unable to allocate 810000000 bytes of memory

Anna

···

On Mon, Dec 28, 2015 at 4:25 AM, Helmut Kudrnovsky <hellik@web.de> wrote:

Markus Neteler wrote

Hi,

while teaching our IRSAE course
(http://gis.cri.fmach.it/grass-gis-and-r-course/) we did not have
success to perform a NVIZ exercise on Windows.

Switching to 3D mode leads to a GUI crash when loading the “elevation”
DEM. We used “elevation” in the new (yet to be improved) Piemont
location [1].
No error message shown, just crash.

If anyone wants to test:

wget http://geodati.fmach.it/gfoss_geodata/grassdata_course_version1.7z

unpack (7a is contained eg in p7zip-plugins package):

7z x grassdata_course_version1.7z

→ grassdata_piemonte/user1

Note: It is a new issue since 7.0.1, in 7.0.0 which is installed on
the same machine no such issue.

I suspect that it is the elevation map size causing the issue since
the DEM is larger than that of the NC dataset.

Markus

I confirm this. in large regions, 3D view crashes.

tested here with

System Info
GRASS Version: 7.0.2

and

System Info
GRASS Version: 7.1.svn

and the piemonte data set (but also with other large rasters):

g.region -p -a raster=elevation@PERMANENT align=elevation@PERMANENT
projection: 1 (UTM)
zone: 32
datum: wgs84
ellipsoid: wgs84
north: 5146000
south: 4879500
west: 313000
east: 517000
nsres: 25
ewres: 25
rows: 10660
cols: 8160
cells: 86985600

attached a debug=3 output ( wxnviz_debug.txt
<http://osgeo-org.1560.x6.nabble.com/file/n5243063/wxnviz_debug.txt> )

best regards
Helmut

View this message in context: http://osgeo-org.1560.x6.nabble.com/winGRASS-OSGeo4W-crashes-when-switching-to-3D-view-tp5243039p5243063.html
Sent from the Grass - Dev mailing list archive at Nabble.com.

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