=== If no file names and line numbers are shown below, one can run addr2line -Cpfie my_exefile my_line_address to convert `my_line_address` (e.g., 0x4a6b) into file name and line number. Or one can use amrex/Tools/Backtrace/parse_bt.py. === Please note that the line number reported by addr2line may not be accurate. One can use readelf -wl my_exefile | grep my_line_address' to find out the offset for that line. 0: ./Castro2d.gnu.DEBUG.MPI.ex(+0x34c832) [0x560064c23832] amrex::BLBackTrace::print_backtrace_info(_IO_FILE*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:163:29 1: ./Castro2d.gnu.DEBUG.MPI.ex(+0x34c47c) [0x560064c2347c] amrex::BLBackTrace::handler(int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8 2: ./Castro2d.gnu.DEBUG.MPI.ex(+0x22bb93) [0x560064b02b93] amrex::ParallelDescriptor::Abort(int, bool) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:230:22 3: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1df759) [0x560064ab6759] amrex::detail::Abort_host_doit(char const*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:192:1 4: ./Castro2d.gnu.DEBUG.MPI.ex(+0x27019) [0x5600648fe019] amrex::Abort(char const*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.H:125:5 5: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1df7a2) [0x560064ab67a2] amrex::Abort(std::__cxx11::basic_string, std::allocator > const&) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:198:1 6: ./Castro2d.gnu.DEBUG.MPI.ex(+0x46676) [0x56006491d676] amrex::Array4::index_assert(int, int, int, int) const /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Array4.H:185:29 7: ./Castro2d.gnu.DEBUG.MPI.ex(+0x365e44) [0x560064c3ce44] double const& amrex::Array4::operator()(int, int, int, int) const inlined at /raid/testing/castro-gfortran/AMReX//Src/AmrCore/AMReX_FluxRegister.cpp:154:17 in amrex::FluxRegister::SumReg(int) const /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Array4.H:79:20 amrex::FluxRegister::SumReg(int) const /raid/testing/castro-gfortran/AMReX//Src/AmrCore/AMReX_FluxRegister.cpp:154:17 8: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1c8648) [0x560064a9f648] Castro::do_energy_diagnostics() /raid/testing/castro-gfortran/Castro//Source/radiation/energy_diagnostics.cpp:48:30 9: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1cc04) [0x5600648f3c04] Castro::post_timestep(int) /raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:1799:1 10: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3d265e) [0x560064ca965e] amrex::Amr::timeStep(int, double, int, int, double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2195:32 11: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3d295a) [0x560064ca995a] amrex::Amr::coarseTimeStep(double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26 12: ./Castro2d.gnu.DEBUG.MPI.ex(+0x75739) [0x56006494c739] main /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5 13: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f712b0971a3] __libc_start_main ??:0 14: ./Castro2d.gnu.DEBUG.MPI.ex(+0x14cde) [0x5600648ebcde] _start ??:0