[GRASS-dev] g.gui.animation freezes when loading strds

[Anna Petrášová]

On Thu, Aug 10, 2017 at 5:29 PM, Pietro <peter.zamb at gmail.com> wrote:
> Hi Markus,
>
> On Thu, Aug 10, 2017 at 8:34 PM, Markus Metz
> <markus.metz.giswork at gmail.com> wrote:
>> the OS limit of the number of open files is given in
>> /proc/sys/fs/file-max
>> but that is irrelevant, what matters is the maximum allowed number of open files for the current user
>>
>> [cut]
>>
>> ulimit -n reports the maximum allowed number of open files for the current user, this is the relevant limit
>
> Thank you for the clarification. In my system the user limit is 1024.
>
> I can confirm that raise the current limit with:
>
> ```bash
> $ ulimit -n 4096
> ```
>
> fixed the problem.
>
>> A solution to the error "Too many open files" would be to open the files/maps one at a time and closing them again, similar to the -z flag of r.series.
>
> I was trying to understand where these file are opened, and it seems
> to me that the python code is always opening and closing all the
> files, It is not clear to me which ctypes function is just opening the
> files without closing them.

Does the problem appear when you just use series of raster maps, or is
it related to the temporal stuff? I would expect the problem would be
in both and in that case, I believe it does not depend on any ctypes
functions, all should be module calls.

>
> Best regards
>
> Pietro