=== 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: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x7dd73c]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:175:29

 1: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x7dd270]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: /lib64/libc.so.6(+0x3da60) [0x7f58cacbfa60]
    __restore_rt
??:0

 3: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x503c94]
    Castro::src_to_prim(amrex::Box const&, amrex::Array4<double const> const&, amrex::Array4<double const> const&, amrex::Array4<double> const&)::{lambda(int, int, int)#1}::operator()(int, int, int) const
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_ctu.cpp:480:60

 4: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x507d03]
    call_f<Castro::src_to_prim(const amrex::Box&, const amrex::Array4<double const>&, const amrex::Array4<double const>&, const amrex::Array4<double>&)::<lambda(int, int, int)> >
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_GpuLaunchFunctsC.H:30:5

 5: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x507b58]
    ParallelFor<Castro::src_to_prim(const amrex::Box&, const amrex::Array4<double const>&, const amrex::Array4<double const>&, const amrex::Array4<double>&)::<lambda(int, int, int)> >
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_GpuLaunchFunctsC.H:118:5

 6: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x50594e]
    Castro::src_to_prim(amrex::Box const&, amrex::Array4<double const> const&, amrex::Array4<double const> const&, amrex::Array4<double> const&)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_ctu.cpp:505:1

 7: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x4e3bad]
    Castro::construct_ctu_hydro_source(double, double)
/raid/testing/castro-gfortran/Castro//Source/hydro/Castro_ctu_hydro.cpp:335:17

 8: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x469195]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:182:36

 9: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x46a849]
    Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:655:90

10: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x467219]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:55

11: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x8d50f2]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2016:44

12: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x8d5904]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2126:26

13: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x47f054]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:136:5

14: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f58cacaa1e2]
    __libc_start_main
??:0

15: ./Castro3d.gnu.DEBUG.TPROF.MPI.ex() [0x4096ae]
    _start
??:0


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