Hello,
I try to write a GRASS addon, which does some preprocessing and classifies with r.learn.ml on different region parallel. For this, I want to use MultiModule and ParallelModuleQueue. I tested the examples on https://grass.osgeo.org/grass77/manuals/libpython/pygrass.modules.interface.html?highlight=parallelmodulequeue#pygrass.modules.interface.module.ParallelModuleQueue with Python 3. The example "Check MultiModule approach with three by two processes running in a background process" leads to ... Traceback (most recent call last): File "/usr/lib/python3.6/multiprocessing/queues.py", line 235, in _feed obj = _ForkingPickler.dumps(obj) File "/usr/lib/python3.6/multiprocessing/reduction.py", line 52, in dumps cls(buf, protocol).dump(obj) TypeError: can't pickle _thread.lock objects ... The same error appears in the MultiModule example "Asynchronous module run, setting finish = False and using temporary region". Using python 2 all works fine. Has someone a solution for the error or an idea how I can write a Grass addon with parallelization on different regions? Thanks and best regards, Anika P.S. I used this versions on Linux Mint 19 Tara: python3 --version Python 3.6.7 python --version Python 2.7.15rc1 grass77 --config svn_revision version 74074M 7.7.svn -- Anika Bettge - Anwendungsentwicklerin - mundialis GmbH & Co. KG Kölnstraße 99 53111 Bonn Tel: +49 (0)228 / 38 75 80 -80 Fax: +49 (0)228 / 96 28 99 -57 Email: [email protected] Web: https://www.mundialis.de Amtsgericht Bonn, HRA 8528 Komplementärin: mundialis Verwaltungsgesellschaft mbH vertreten durch: Dr. Markus Neteler, Hinrich Paulsen, Till Adams Informationen über Ihre gespeicherten Daten finden Sie auf unserer Homepage unter folgendem Link: https://www.mundialis.de/datenschutzerklaerung
_______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
