Dear Prof. Bangerth, I will gladly do all the debugging you've suggested and report back to the community. I'm right now very close to a deadline so I will need to postpone it for a couple of weeks, but I'll work on it then.
Thanks a lot for the support, Matteo Malvestiti Il giorno mercoledì 12 febbraio 2025 alle 23:56:59 UTC+1 Wolfgang Bangerth ha scritto: > > On 2/10/25 08:05, Matteo Malvestiti wrote: > > > > *BUT*, as soon as I introduce a simple global refinement on the serial > > triangulation, like: > > 1.5) tria_base.refine_global(5); > > > > deali.II 9.5.0: Works fine > > deal.II 9.6.0: ERROR - or actually goes in a deadlock during the call to > > /tria_pft.create_triangulation(description);/ > > / > > / > > ------- > > I attach the simple demo script as a .cpp file. > > > > Does anybody know something about this? > > Matteo -- can you help debug this a bit further? Does the problem > already happen with two MPI processes, or how many do you need? Do you > actually need 5 global refinements, or what is the minimum so that the > problem happens? > > Lastly, let's assume that you can get away with just two MPI processes. > Then it's not so difficult to run the two processes in a debugger. If > the program ends in a deadlock, can you obtain a backtrace for where the > program is stuck? (If you've never run a parallel program in a debugger, > check out lecture 41.25 at > https://www.math.colostate.edu/~bangerth/videos.html .) > > Thanks already for producing a fairly minimal program -- this is exactly > what is necessary to debug the issue! > > Best > Wolfgang > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/dealii/79a7c758-bdbf-4912-a6ea-e9cf243dd46dn%40googlegroups.com.
