On 11/17/2017 07:37 AM, Lucas Campos wrote:
Invalid MPI_Op, error stack:
MPI_Op_free(111): MPI_Op_free(op=0x7ffcf6298dac) failed
MPI_Op_free(75).: Null Op pointer
If this error would lead the the issues I am having, is up to discussion.
I tried using PETSc's SolverPreOnly
SolverControl solver_control;
PETScWrappers::SolverPreOnly solver(solver_control,
mpi_communicator);
PETScWrappers::PreconditionLU
preconditioner(system_matrix);
solver.solve(system_matrix, distributed_dU, system_rhs,
preconditioner);
It shows the same issues, as expected. I will follow your advice and try
to use a different solver.
Still, would it be possible for you to comment a bit more on those
MPI_Op_free errors?
It means that an MPI_Op object is freed (like calling 'free' for memory)
but that the object that's being freed doesn't actually exist (is a NULL
pointer).
There clearly is a bug here, but it's impossible to tell without a
backtrace where that might be.
Best
W.
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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