=== 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() [0x88e646]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:175:29

 1: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x88e17a]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x7414b8]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_ParallelDescriptor.cpp:206:29

 3: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x6d2919]
    amrex::Abort_host(char const*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.cpp:246:1

 4: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x47a06c]
    amrex::Abort(char const*) inlined at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:575:25 in Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.H:149:5
Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:575:25

 5: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x476e91]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

 6: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x951022]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2015:44

 7: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x951834]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2125:26

 8: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x496686]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:136:5

 9: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f263bf2c1e2]
    __libc_start_main
??:0

10: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x40a85e]
    _start
??:0


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