Opened 16 years ago
Last modified 16 years ago
#2591 closed defect
NetCDF Driver should read/write data in stripes instead of the whole array — at Version 1
Reported by: | rsignell | Owned by: | warmerdam |
---|---|---|---|
Priority: | normal | Milestone: | 1.5.3 |
Component: | GDAL_Raster | Version: | 1.5.0 |
Severity: | normal | Keywords: | netcdf |
Cc: | dnadeau |
Description (last modified by )
When I tried to convert a 20000x15000 file using the GMT driver (which writes NetCDF with Z as a 1D variable) it works fine, but the NetCDF driver gives an "Out of memory" error:
gdal_translate psdem_2005_geo.tif -of netcdf psdem_2005.nc Input file size is 20000, 15000 0ERROR 2: CPLMalloc(): Out of memory allocating 1200000000 bytes.
It looks like the NetCDF driver is trying to allocate memory for the entire data grid being processed instead of reading/writing by column, row or chunk. This should be fixed, to allow processing of much larger grids on machines with limited memory.
Change History (1)
comment:1 by , 16 years ago
Cc: | added |
---|---|
Component: | default → GDAL_Raster |
Description: | modified (diff) |
Keywords: | netcdf added |
Priority: | high → normal |
Status: | new → assigned |
Note:
See TracTickets
for help on using tickets.
Denis,
Any thoughts on this issue? Skimming the CreateCopy code in the netcdf driver, it looks like things are done one scanline at a time which should be OK.
I'll try and reproduce ...