Katharina, Martin,
can you identify the mutex causing the trouble? There should not be any
anymore in FETools::compute_embedding_matrices, unless the TaskGroup
introduces one.
Wolfgang, do you think nested task groups can cause the problem? Can
join_all() operations be nested?
G
at /bubo/home/h8/martinkr/deal.II/include/deal.II/base/thread_management.h:4089
#8 0x00000000004c8502 in dealii::Threads::TaskGroup<void>::join_all
(this=0x7fffffffb510)
at /bubo/home/h8/martinkr/deal.II/include/deal.II/base/thread_management.h:5116
#9 0x00002aaaae391d6e in dealii::FETools::compute_embedding_matrices<3,
double, 3> (fe=...,
matrices=std::vector of length 7, capacity 7 = {...},
isotropic_only=false)
at /bubo/home/h8/martinkr/deal.II/source/fe/fe_tools.cc:810
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