id summary reporter owner description type status priority milestone component version resolution keywords cc cpu platform 2902 i.segment.hierarchical: Execution of subprocesses was not successful mlennert grass-dev@… "Using the NC demo dataset, I have the following issue with i.segment.hierarchical (in fact the GridModule): {{{ g.region rast=ortho_2001_t792_1m i.group ortho in=ortho_2001_t792_1m i.segment.hierarchical group=ortho thresholds=0.01,0.02,0.03 output=seg_ortho_out outputs_pref=seg_ortho memory=2000 width=1524 height=1524 processes=4 }}} Result: {{{ Traceback (most recent call last): File ""/home/mlennert/.grass7/addons/scripts/i.segment.hierarchical"", line 252, in SEG.run() File ""/data/home/mlennert/SRC/GRASS/grass_trunk/dist.x86_64-pc-linux-gnu/etc/python/grass/pygrass/modules/grid/grid.py"", line 553, in run raise RuntimeError(_(""Execution of subprocesses was not successful"")) RuntimeError: L'exécution du sous-module a échoué GRASS 7.1.svn (nc_spm_08):/data/home/mlennert > i.segment.hierarchical group=ortho thresholds=0.01,0.02,0.03 output=seg_ortho_out outputs_pref=seg_ortho memory=2000 width=1524 height=1524 processes=4 Traceback (most recent call last): File ""/home/mlennert/.grass7/addons/scripts/i.segment.hierarchical"", line 252, in SEG.run() File ""/data/home/mlennert/SRC/GRASS/grass_trunk/dist.x86_64-pc-linux-gnu/etc/python/grass/pygrass/modules/grid/grid.py"", line 553, in run raise RuntimeError(_(""Execution of subprocesses was not successful"")) RuntimeError: L'exécution du sous-module a échoué }}} Anna already reported such an error on the mailing list [https://lists.osgeo.org/pipermail/grass-dev/2015-November/077357.html 1], but I haven't seen a response. And contrary to what she reports, I have this problem systematically, not in random manner. I also tried reducing the number of processes, but to no avail." defect closed normal 7.0.5 Addons svn-trunk fixed i.segment.hierarchical GridModule subprocesses Unspecified Unspecified