=== 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() [0x766e34]
    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() [0x766968]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: /lib64/libc.so.6(+0x3da60) [0x7f92b7306a60]
    __restore_rt
??:0

 3: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x6d6038]
    void amrex::FabArray<amrex::FArrayBox>::mult<amrex::FArrayBox, 0>(double, int, int, int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArray.H:1969:9

 4: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x6ce47c]
    amrex::MultiFab::mult(double, int, int, int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_MultiFab.cpp:1140:1

 5: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x6c87ed]
    amrex::MultiFab::mult(double, int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_MultiFab.cpp:462:1

 6: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x5b433c]
    Gravity::make_radial_gravity(int, double, amrex::PODVector<double, std::allocator<double> >&)
/raid/testing/castro-gfortran/Castro//Source/gravity/Gravity.cpp:3022:19

 7: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x5a3a77]
    Gravity::get_new_grav_vector(int, amrex::MultiFab&, double)
/raid/testing/castro-gfortran/Castro//Source/gravity/Gravity.cpp:952:62

 8: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x5c85ed]
    Castro::construct_new_gravity(int, int, double)
/raid/testing/castro-gfortran/Castro//Source/gravity/Castro_gravity.cpp:206:54

 9: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x472f98]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:286:52

10: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x473c2b]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:660:90

11: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x470cf5]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

12: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x826634]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2015:44

13: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x826ab8]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2061:13

14: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x826e46]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2125:26

15: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x487c78]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:136:5

16: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f92b72f11e2]
    __libc_start_main
??:0

17: ./Castro2d.gnu.DEBUG.TPROF.MPI.ex() [0x40a70e]
    _start
??:0


===== TinyProfilers ======
main()
Amr::coarseTimeStep()
Amr::timeStep()
Amr::timeStep()
Castro::advance()
Castro::subcycle_advance_ctu()
Castro::do_advance_ctu()
Castro::construct_new_gravity()
Gravity::get_new_grav_vector()
Gravity::make_radial_gravity()