Alexander Bruy wrote:
Hi again,
with your help I've fix problem with "integer overflow" and now I get
correct results.
Also I clean up my code for reduce memory usage but problem with large files is
remain. I have raster with size 11779*10663 and 5 bands. When I calculate NDVI
on Linux box (2 Gb RAM, 2Gb swap, GDAL 1.6.3) all works fine and I get correct
results.Peak memory consumption during this operation is 1900 Mb RAM and
300 Mb swap (monitored with htop).
When I run same code with same raster on Windows box (2 Gb RAM, swap size is
selected by OS ~1.3 Gb, GDAL 1.6.3) I get MemoryError. Peak memory consumption
during this operation is 600 Mb RAM and 700 Mb swap. I've try smaller
raster with size
8500*7600 pixels but get MemoryError too.
Hi,
I'll bet the problem is that you are hitting the normal 2GB user address
space in Windows.
Google for "/3GB" and you will find how to increase this to 3GB.
I can't tell you outright because you have not mentioned whether you are
using XP or VISTA/Win7 - there are different ways to do it for these OS
versions.
You will have to re-boot after changing the relevant boot.ini or
whatever file.
HTH,
Zoltan
--
===========================================
Zoltan Szecsei
Director
Geograph (Pty) Ltd.
P.O. Box 7, Muizenberg 7950, South Africa.
65 Main Road, Muizenberg 7945
Western Cape, South Africa.
34° 6'16.35"S 18°28'5.62"E
Tel: +27-21-7884897
Fax: +27-86-6115323 www.geograph.co.za
===========================================
No virus found in this outgoing message.
Checked by AVG - www.avg.com
Version: 9.0.733 / Virus Database: 271.1.1/2662 - Release Date: 02/01/10
14:37:00
_______________________________________________
gdal-dev mailing list
gdal-dev@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/gdal-dev
