[FWTools] Errors during gdalwarp

[Frank Warmerdam]

Jason Birch wrote:
> Hi all,
> 
> I'm running into some memory errors doing a rather large image
> composition task.  The majority of my images are pulled in OK, but for
> several of them I am getting errors like:
> 
> Processing input file z:/tiff_30cm_tiled/650.tif.
> :0...10...20..ERROR 2: Failed to allocate 400110000 byte source buffer.
> 
> This is on a PC with a reasonable amount of free space on the hdd and
> 3GB of physical memory.  I'm using the -wm option to set a 1.5Gb cache.
> Perhaps this is overkill?  Are there any other memory-enhancing
> functions available?  I'm not afraid of naturopathy :)
> 
> The full command line and output is available here:
> 
> http://citymap.nanaimo.ca/temp/gdalwarp_errors.txt
> 
> Version info:
> 
> D:\Orthos>gdalwarp --version
> GDAL 1.5dev, FWTools 1.3.2, released 2007/06/01
> 
> Gdalinfo from one of the erroring images:
> 
> D:\Orthos>gdalinfo z:/tiff_30cm_tiled/650.tif
> Driver: GTiff/GeoTIFF
> Files: z:/tiff_30cm_tiled/650.tif
> Size is 13337, 10000
> Coordinate System is `'
> Origin = (418999.899999999970000,5444500.000000000900000)
> Pixel Size = (0.300000000000000,-0.300000000000000)
> Metadata:
>   TIFFTAG_SOFTWARE=OrthoVista
> Corner Coordinates:
> Upper Left  (  418999.900, 5444500.000)
> Lower Left  (  418999.900, 5441500.000)
> Upper Right (  423001.000, 5444500.000)
> Lower Right (  423001.000, 5441500.000)
> Center      (  421000.450, 5443000.000)
> Band 1 Block=13337x1 Type=Byte, ColorInterp=Red
>   Overviews: 1024x768
> Band 2 Block=13337x1 Type=Byte, ColorInterp=Green
>   Overviews: 1024x768
> Band 3 Block=13337x1 Type=Byte, ColorInterp=Blue
>   Overviews: 1024x768
> 
> Any ideas?

Jason,

The obvious advice is to reduce your -wm setting.

I don't know specifically why you are running out of
memory, but there can be issues of memory fragmentation
in the heap that can make it hard to take advantage of
the full 2GB of memory spacethat should presumably be
available to 32bit processes on your system.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org