=== 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.TEST.TPROF.MPI.ex(+0x1a6595) [0x564a52ce7595]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:172:39

 1: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x1a81c6) [0x564a52ce91c6]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:76:8

 2: /lib64/libc.so.6(+0x3c6b0) [0x7f3bfb2656b0]
    __restore_rt
??:0

 3: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0xa00a3) [0x564a52be10a3]
    std::__uniq_ptr_impl<amrex::MultiFab, std::default_delete<amrex::MultiFab> >::_M_ptr() const inlined at /usr/include/c++/9/bits/unique_ptr.h:361:28 in Castro::just_the_mhd(double, double)
/usr/include/c++/9/bits/unique_ptr.h:154:58
std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> >::get() const
/usr/include/c++/9/bits/unique_ptr.h:361:28
std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> >::operator*() const
/usr/include/c++/9/bits/unique_ptr.h:346:2
Castro::just_the_mhd(double, double)
/raid/testing/castro-gfortran/Castro//Source/mhd/Castro_mhd.cpp:354:23

 4: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x441c1) [0x564a52b851c1]
    Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:184:28

 5: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x4486c) [0x564a52b8586c]
    advance_status::operator=(advance_status&&) inlined at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:560:90 in Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro.H:144:8
Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:560:90

 6: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x42d8a) [0x564a52b83d8a]
    double const& std::min<double>(double const&, double const&) inlined at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:92 in Castro::advance(double, double, int, int)
/usr/include/c++/9/bits/stl_algobase.h:205:14
Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:92

 7: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x21618d) [0x564a52d5718d]
    amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2054:81

 8: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x207fba) [0x564a52d48fba]
    std::vector<double, std::allocator<double> >::operator[](unsigned long) inlined at /raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:34:54 in amrex::Amr::coarseTimeStep(double)
/usr/include/c++/9/bits/stl_vector.h:1042:2
amrex::Vector<double, std::allocator<double> >::operator[](unsigned long)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:34:54
amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2381:26

 9: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x2143c) [0x564a52b6243c]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:143:33

10: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f3bfb2501a3]
    __libc_start_main
??:0

11: ./Castro3d.gnu.TEST.TPROF.MPI.ex(+0x28f1e) [0x564a52b69f1e]
    _start
??:0


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