[gdal-dev] -wm (memory in mb with gdalwarp)

[Jonathan Moules]

Hi List,
I've just tried the following:

call gdalwarp -of GTiff *-wm 13000* -co TILED=YES -co BIGTIFF=YES -co
COMPRESS=JPEG -co JPEG_QUALITY=80 -co BLOCKXSIZE=512 -co BLOCKYSIZE=512 -co
PHOTOMETRIC=YCBCR SP1937.tif SP1938.tif SP1939.tif 1.tif

The documentation says:

> -wm memory_in_mb:
> Set the amount of memory (in megabytes) that the warp API is allowed to
> use for caching.


So by my reading I'm allocating a bit less than 13GB (of my 16,730,672kB
RAM) to gdalwarp.

Imagine my surprise when I get this error:
 ERROR 5: GDALWarpOptions.Validate()
  dfWarpMemoryLimit=13000 is unreasonably small.

After more testing, anything with 4 digits works fine (including 9999), but
anything with five digits (i.e. 10,000) gives me that error.

Is this a bug?

 (GDAL 1.10.1)

Cheers,
Jonathan

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