Dear PETSc team, When I called SLEPc multiple time, I eventually got following error:
MPI operation not supported by PETSc's sequential MPI wrappers [0]PETSC ERROR: #1 PetscInitialize() line 967 in ../../../petsc/src/sys/objects/pinit.c [0]PETSC ERROR: #2 SlepcInitialize() line 262 in ../../../slepc/src/sys/slepcinit.c [0]PETSC ERROR: #3 SlepcInitializeNoPointers() line 359 in ../../../slepc/src/sys/slepcinit.c PETSC ERROR: Logging has not been enabled. You might have forgotten to call PetscInitialize(). I debugged: it is because of following in petsc/src/sys/mpiuni/mpi.c if (num_attr >= MAX_ATTR) in function int MPI_Comm_create_keyval(MPI_Copy_function *copy_fn,MPI_Delete_function *delete_fn,int *keyval,void *extra_state) num_attr is declared static and keeps increasing every time MPI_Comm_create_keyval is called. I am using petsc 3.11.3 but found 3.13.2 has the same logic. Is this a bug or I didn't use it correctly? Thanks, Sam
