=== 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(+0x348ae2) [0x560c45450ae2] 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(+0x34872c) [0x560c4545072c] amrex::BLBackTrace::handler(int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8 2: ./Castro2d.gnu.DEBUG.MPI.ex(+0x227e43) [0x560c4532fe43] amrex::ParallelDescriptor::Abort(int, bool) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_ParallelDescriptor.cpp:230:22 3: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1dba09) [0x560c452e3a09] amrex::detail::Abort_host_doit(char const*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.cpp:192:1 4: ./Castro2d.gnu.DEBUG.MPI.ex(+0x2710f) [0x560c4512f10f] amrex::Abort(char const*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX.H:125:5 5: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1dba52) [0x560c452e3a52] 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(+0x4663a) [0x560c4514e63a] 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(+0x3620f4) [0x560c4546a0f4] 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(+0x1c48f8) [0x560c452cc8f8] Castro::do_energy_diagnostics() /raid/testing/castro-gfortran/Castro//Source/radiation/energy_diagnostics.cpp:48:30 9: ./Castro2d.gnu.DEBUG.MPI.ex(+0x1cc8e) [0x560c45124c8e] Castro::post_timestep(int) /raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:1801:1 10: ./Castro2d.gnu.DEBUG.MPI.ex(+0x3ce90e) [0x560c454d690e] 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(+0x3cec0a) [0x560c454d6c0a] amrex::Amr::coarseTimeStep(double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26 12: ./Castro2d.gnu.DEBUG.MPI.ex(+0x75889) [0x560c4517d889] main /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5 13: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7efc406731a3] __libc_start_main ??:0 14: ./Castro2d.gnu.DEBUG.MPI.ex(+0x14cde) [0x560c4511ccde] _start ??:0