[Qgis-user] Use all cores for geoprocessing?

[Nicolas Cadieux]

Hi, 
Some GDAL raster processing modules use multiprocessing.  If you click on the help button in the GDAL Windows (that opens when you click on a GDAL function), you will see more info on the application.  Some like gdal_grid have a switch like -all_CPU (or something like that).  If you add that to the script (yellow pencil) that will activate the function. 
Nicolas 
On May 16, 2016 6:18 AM, "ginetto [via OSGeo.org]" <ml-node+s1560n5266615h26 at n6.nabble.com> wrote: 

	I should rectify... in this moment processing MT support is
experimental and available only in the branch of the GSOC project.
regards
Luigi Pirelli
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On 16 May 2016 at 11:58, Luigi Pirelli < [hidden email] > wrote:
> MultiThreading was introduced for rendering of different layer... in
> layer rendering is on single core.
> A GSOC project ( https://qgisgsoc2015.wordpress.com/ ) introduced MT in
> Processing and was completed by Alexandre Bruy (if I well remember it
> would be available at least in processing master)
> Nyall Dowson is working in a QgsTaskManager and relative QgsTask class
> ( https://www.youtube.com/watch?v=7pXBZtWYFJc ) and probably Processing
> and Task Manager will converge in a while.
>
> other than this you always create a plugin that run it's python
> process using all cores you want as stated by Nicolas Cadieaux... you
> should only have a lot of care using qgis classes, most of them are
> not thread safe in this moment.
>
> regards
> Luigi Pirelli
>
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>
>
> On 13 May 2016 at 21:29, Elstermann, Mike < [hidden email] > wrote:
>> I have found the click for use more processor cores for rendering,
>> but how can QGIS use more processor cores for geoprocessing? My Mac use only
>> one of four cores :-(
>>
>> Best regards
>> mikeE., The geoObserver.
>>
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