=== 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.SMPLSDC.ex() [0x8e6a42]
    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.SMPLSDC.ex() [0x8e6576]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: /lib64/libc.so.6(+0x3da60) [0x7f2c74fe8a60]
    __restore_rt
??:0

 3: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x4b35ac]
    ca_derenuctimescale::{lambda(int, int, int)#1}::operator()(int, int, int) const
/raid/testing/castro-gfortran/Castro//Source/driver/Derive.cpp:464:68

 4: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x4cf327]
    call_f<ca_derenuctimescale(const amrex::Box&, amrex::FArrayBox&, int, int, const amrex::FArrayBox&, const amrex::Geometry&, amrex::Real, int const*, int)::<lambda(int, int, int)> >
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_GpuLaunchFunctsC.H:30:5

 5: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x4cbf4f]
    ParallelFor<ca_derenuctimescale(const amrex::Box&, amrex::FArrayBox&, int, int, const amrex::FArrayBox&, const amrex::Geometry&, amrex::Real, int const*, int)::<lambda(int, int, int)> >
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_GpuLaunchFunctsC.H:118:5

 6: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x4b483d]
    ca_derenuctimescale
/raid/testing/castro-gfortran/Castro//Source/driver/Derive.cpp:496:5

 7: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x9baf14]
    amrex::AmrLevel::derive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, double, int)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_AmrLevel.cpp:1679:34

 8: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x429b2e]
    Castro::derive(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, double, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:3294:43

 9: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x6178d2]
    Castro::update_extrema(double)
/raid/testing/castro-gfortran/Castro//Exec/science/wdmerger/Prob.cpp:791:74

10: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x60fd3c]
    Castro::problem_post_timestep()
/raid/testing/castro-gfortran/Castro//Exec/science/wdmerger/Prob.cpp:53:18

11: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x42146b]
    Castro::post_timestep(int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:1926:9

12: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x9a7168]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2074:32

13: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x9a745c]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2125:26

14: ./Castro2d.gnu.DEBUG.TPROF.MPI.SMPLSDC.ex() [0x496778]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:136:5

15: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f2c74fd31e2]
    __libc_start_main
??:0

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


===== TinyProfilers ======
main()
Amr::coarseTimeStep()
Amr::timeStep()
Castro::post_timestep()
Castro::problem_post_timestep()
Castro::derive()