Step-1 aborts with Illegal Instruction (core dumped). The error msg gdb prints is the following. Program received signal SIGILL, Illegal instruction. __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at /home/ComptGasDynLab/vachanpotluri/source/dealii-9.1.1/source/numerics/time_dependent.cc:1196 1196 std::make_pair(0U, 0.))); When I backtrace the error, it leads to this. template <int dim> typename TimeStepBase_Tria_Flags::RefinementFlags<dim>::CorrectionRelaxations TimeStepBase_Tria_Flags::RefinementFlags<dim>::default_correction_relaxations( 1, // one element, denoting the first and all subsequent sweeps std::vector<std::pair<unsigned int, double>>(1, // one element, denoting the // upper bound for the // following relaxation std::make_pair(0U, 0.))); Not just step-1, but step.debug, affinity.debug and mpi.debug (and possibly other debug tests may) also terminate with the same error and bt. Can someone explain why this is happening?
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