[Bug] t.rast.aggregate fails when GUI Settings → Number of threads for parallel computing set to more than 1 with active processing mask

[Falconus]

Description

When attempting to run the t.rast.aggregate tool with a mask, it fails when the number of threads for parallel computing is set to >1 in the GUI settings (Settings → Preferences). When it is reset to 1 and saved, the tool works as expected with no errors. When the mask is removed, it also works with no errors.

t.rast.aggregate --overwrite input=uas_dsm@assignment5b output=uas_dsm_aggr basename=uas_dsm_aggr suffix=time granularity=1 months nprocs=1
WARNING: Parallel processing disabled due to active MASK.
Traceback (most recent call last):
  File "/usr/local/grass84/scripts/t.rast.aggregate", line
245, in <module>
    main()
  File "/usr/local/grass84/scripts/t.rast.aggregate", line
195, in main
    output_list = tgis.aggregate_by_topology(
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/grass84/etc/python/grass/temporal/aggrega
tion.py", line 383, in aggregate_by_topology
    process_queue.put(mod)
  File "/usr/local/grass84/etc/python/grass/pygrass/modules/
interface/module.py", line 253, in put
    self.wait()
  File "/usr/local/grass84/etc/python/grass/pygrass/modules/
interface/module.py", line 311, in wait
    proc.wait(),
    ^^^^^^^^^^^
  File "/usr/local/grass84/etc/python/grass/pygrass/modules/
interface/module.py", line 859, in wait
    raise CalledModuleError(
grass.exceptions.CalledModuleError: Module run `r.series fil
e=/media/christopher/Data/GIS_584/GRASS/Lake_Wheeler_NCspm/a
ssignment5b/.tmp/christopher-desktop/771233.0 method=average
nprocs=2 memory=122880
output=uas_dsm_aggr_2015_09_01T00_00_00 --o --q` ended with
an error.
The subprocess ended with a non-zero return code: -11. See
errors above the traceback or in the error output.
(Fri Nov 15 23:55:38 2024) Command ended with non-zero return code 1 (2 sec)    

To reproduce

1. Set a processing mask
2. From the Settings drop-down menu, select the "Preferences" menu item.
3. In the tools tab in the "GUI Settings" window, set the number of threads for parallel computing to a number greater than 1 (I tried 2 and 16, with the same results)
4. Run the t.rast.aggregate tool. I used the following parameters: t.rast.aggregate --overwrite input=uas_dsm@assignment5b output=uas_dsm_aggr basename=uas_dsm_aggr suffix=time granularity=1 months nprocs=1. The nprocs flag had no effect, regardless of whether it was set at 1 or 16.
5. Observe tool failure

Expected behavior

Tool should not fail due to mask if default nprocs are set to >1.

Screenshots

System description

                            
System Info                                                                     
GRASS version: 8.4.1dev                                                         
Code revision: cd76f8b7d1                                                       
Build date: 2024-11-15                                                          
Build platform: x86_64-pc-linux-gnu                                             
GDAL: 3.9.3                                                                     
PROJ: 9.6.0                                                                     
GEOS: 3.12.2                                                                    
SQLite: 3.45.1                                                                  
Python: 3.12.3                                                                  
wxPython: 4.2.2                                                                 
Platform: Linux-6.8.0-48-generic-x86_64-with-glibc2.39                          
                                                                                

python3 -c import sys, wx; print(sys.version); print(wx.version())
3.12.3 (main, Sep 11 2024, 14:17:37) [GCC 13.2.0]
4.2.2 gtk3 (phoenix) wxWidgets 3.2.6

Workaround

Set the default nprocs to 1 or remove the mask for the t.rast.aggregate step.