Damian, Thanks for the report. Fixing in https://gitlab.com/petsc/petsc/-/merge_requests/6972
Barry > On Oct 27, 2023, at 9:12 AM, Damian Marek <damian.ma...@mail.utoronto.ca> > wrote: > > Hello, > > I found a minor issue with the documentation for MatDenseSetLDA, which ended > up causing my program to idle unexpectedly. In the documentation it is > specified as "Not Collective". However, in the MPIDense implementation it is > possible for PetscLayoutSetUp to be called, which is a collective. (Lines > 201-202: > https://petsc.org/main/src/mat/impls/dense/mpi/mpidense.c.html#MatDenseSetLDA_MPIDense) > > Regards, > Damian