[GRASS-dev] Avoiding maximum open files limit in r.series

Markus Neteler neteler at osgeo.org
Fri Oct 7 16:25:49 EDT 2011


2011/10/7 Sören Gebbert <soerengebbert at googlemail.com>:
> 2011/10/6 Glynn Clements <glynn at gclements.plus.com>:
...
>> Make opening/reading/closing maps for each row a separate feature
>> (-x flag). This has a significant performance impact, may be
>> unnecessary ("ulimit -n" is 1024 by default, but this can be changed
>> if you have sufficient privilege; 100k open files is quite possible),
>> and may be necessary even if map names are specified on the command
>> line (via input=).
>
> All of my colleagues and our system administrators do not have the
> knowledge to increase the open file limit on Unix machines.

Just for the record, it is explained in the manual :)
http://grass.osgeo.org/grass64/manuals/html64_user/r.series.html

(no idea though about non-Unix-like OS)

Markus


More information about the grass-dev mailing list