2011/10/7 Sören Gebbert <[email protected]>:
> 2011/10/6 Glynn Clements <[email protected]>:
...
>> 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
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