Re: [GRASS-dev] [QGIS-Developer] Running grass algorithms in threads

2018-08-15 Thread Markus Neteler
On Wed, Aug 15, 2018 at 11:54 AM Rudi von Staden wrote: > > Thanks all for your thoughts on this. I suspect the problem may be race > conditions being set up between > https://github.com/qgis/QGIS/blob/master/python/plugins/processing/algs/grass7/Grass7Utils.py > and > https://github.com/qgis/

Re: [GRASS-dev] [QGIS-Developer] Running grass algorithms in threads

2018-08-15 Thread Rudi von Staden
Thanks all for your thoughts on this. I suspect the problem may be race conditions being set up between https://github.com/qgis/QGIS/blob/master/python/plugins/processing/algs/grass7/Grass7Utils.py and https://github.com/qgis/QGIS/blob/master/python/plugins/processing/algs/grass7/Grass7Algorithm.py

Re: [GRASS-dev] [QGIS-Developer] Running grass algorithms in threads

2018-08-14 Thread Stefan Blumentrath
Dear Rudi, Nyall, GRASS is being used on HPC systems for heavily parallelisation. So, in principle, the answer is yes, you can for sure run GRASS algorithms in parallel. On Linux, I often run several commands in parallel using xargs. So it works just fine in many cases. GRASS also has some speci