=== 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.TPROF.MPI.ex(+0x3aad2a) [0x55cb04d69d2a]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:174:29

 1: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x3aa8ab) [0x55cb04d698ab]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:82:8

 2: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x27f6e7) [0x55cb04c3e6e7]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_ParallelDescriptor.cpp:230:22

 3: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x22d079) [0x55cb04bec079]
    amrex::detail::Assert_host_doit(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.cpp:255:1

 4: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x28f78) [0x55cb049e7f78]
    amrex::Assert(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.H:150:5

 5: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x35fd0) [0x55cb049f4fd0]
    amrex::FabArray<amrex::FArrayBox>::fabPtr(amrex::MFIter const&)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArray.H:901:5

 6: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x31006) [0x55cb049f0006]
    amrex::Array4<double> amrex::FabArray<amrex::FArrayBox>::array<amrex::FArrayBox, 0>(amrex::MFIter const&)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArray.H:967:12

 7: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0xe7d99) [0x55cb04aa6d99]
    Castro::construct_ctu_hydro_source(double, double)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_ctu_hydro.cpp:1372:27

 8: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x61851) [0x55cb04a20851]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:181:36

 9: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x62836) [0x55cb04a21836]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:570:90

10: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x47db2) [0x55cb04a06db2]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

11: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x440fb0) [0x55cb04dfffb0]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2050:44

12: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x44183c) [0x55cb04e0083c]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2377:26

13: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x79a25) [0x55cb04a38a25]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:5

14: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7fdf246131a3]
    __libc_start_main
??:0

15: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex(+0x13b9e) [0x55cb049d2b9e]
    _start
??:0


===== TinyProfilers ======
main()
Amr::coarseTimeStep()
Amr::timeStep()
Castro::advance()
Castro::subcycle_advance_ctu()
Castro::do_advance_ctu()
Castro::construct_ctu_hydro_source()