=== 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() [0x8b23c4]
    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() [0x8b1ef8]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x765236]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_ParallelDescriptor.cpp:206:29

 3: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x6f6533]
    amrex::Error_host(char const*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.cpp:221:1

 4: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x484364]
    amrex::Error(char const*) inlined at /raid/testing/castro-gfortran/Castro//Source/driver/runtime_parameters.H:98:29 in validate_runparams()
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.H:112:5
validate_runparams()
/raid/testing/castro-gfortran/Castro//Source/driver/runtime_parameters.H:98:29

 5: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x47b543]
    Castro::variableSetUp()
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_setup.cpp:220:14

 6: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x4944a9]
    CastroBld::variableSetUp()
/raid/testing/castro-gfortran/Castro//Source/driver/CastroBld.cpp:34:1

 7: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x9692d2]
    amrex::Amr::InitAmr()
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:237:28

 8: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x968b53]
    amrex::Amr::Amr(amrex::LevelBld*)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:212:1

 9: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x495659]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:118:40

10: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7efd4d4d21e2]
    __libc_start_main
??:0

11: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x40a86e]
    _start
??:0


===== TinyProfilers ======
main()
Amr::InitAmr()