Hi all,
I tried to run my script in parallel, but obtained the following error:
[v-VirtualBox:08554] *** Process received signal ***
[v-VirtualBox:08554] Signal: Segmentation fault (11)
[v-VirtualBox:08554] Signal code: Invalid permissions (2)
[v-VirtualBox:08554] Failing at address: 0x5649760c190
[v-VirtualBox:08554] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7ff23d3620]
[v-VirtualBox:08554] [ 1] [0x5497260c190]
[v-VirtualBox:08554] *** End of error message ***
[v-VirtualBox:08525] *** Process received signal ***
[v-VirtualBox:08525] Signal: Segmentation fault (11)
[v-VirtualBox:08525] Signal code: Address not mapped (1)
[v-VirtualBox:08525] Failing at address: 0x28
[v-VirtualBox:08525] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7ffb9544890]
[v-VirtualBox:08525] [ 1] /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi/mca_pmix_pmix112.so(+0x31433)[0x7ff4b069433]
[v-VirtualBox:08525] [ 2] /usr/lib/x86_64-linux-gnu/libopen-pal.so.20(opal_libevent2022_event_base_loop+0x7f1)[0x7ffb97b6c31]
[v-VirtualBox:08525] [ 3] /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi/mca_pmix_pmix112.so(+0x2efcd)[0x7ff4b069cd]
[v-VirtualBox:08525] [ 4] /lib/x86_64-linux-gnu/libpthread.so.0(+0x76db)[0x7ff4b956db]
[v-VirtualBox:08525] [ 5] /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7ff4b92288f]
[v-VirtualBox:08525] *** End of error message ***
Segmentation fault (core dumped)
I have tried running the demos in parallel and it works, so I expect the problem to lie within my script.
In the script, I run gmsh from the terminal via subprocess and then meshio. I have obtained similar “segmentation fault” errors previously (when still running in series) only when there was trouble with gmsh. So I think it might be connected to gmsh. Can gmsh be used in parallel? If not, how to do it instead? I am thinking of running the script in series, and within the script run only the actual solving in parallel. I am not sure how to implement that though, will be grateful for any advice or clarification on the issue.