=== 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.OMP.ex() [0x6833e6]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:179:39

 1: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x686242]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: /lib64/libc.so.6(+0x3da60) [0x7f09b4fe2a60]
    __restore_rt
??:0

 3: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x65f7b4]
    amrex::average_face_to_cellcenter(amrex::MultiFab&, std::array<amrex::MultiFab const*, 3ul> const&, amrex::Geometry const&) [clone ._omp_fn.0]
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_MultiFabUtil_3D_C.H:73:54

 4: /lib64/libgomp.so.1(GOMP_parallel+0x46) [0x7f09b51bfd36]
    GOMP_parallel
??:0

 5: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x661e60]
    amrex::average_face_to_cellcenter(amrex::MultiFab&, amrex::Vector<amrex::MultiFab const*, std::allocator<amrex::MultiFab const*> > const&, amrex::Geometry const&)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_MultiFabUtil.cpp:116:5

 6: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x543df4]
    std::vector<amrex::MultiFab const*, std::allocator<amrex::MultiFab const*> >::~vector() inlined at /raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:25:7 in Gravity::get_old_grav_vector(int, amrex::MultiFab&, double)
/usr/include/c++/10/bits/stl_vector.h:680:15
amrex::Vector<amrex::MultiFab const*, std::allocator<amrex::MultiFab const*> >::~Vector()
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:25:7
Gravity::get_old_grav_vector(int, amrex::MultiFab&, double)
/raid/testing/castro-gfortran/Castro//Source/gravity/Gravity.cpp:884:72

 7: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x55405d]
    Castro::construct_old_gravity(int, int, double)
/raid/testing/castro-gfortran/Castro//Source/gravity/Castro_gravity.cpp:16:5

 8: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x4737a4]
    std::__uniq_ptr_impl<amrex::MultiFab, std::default_delete<amrex::MultiFab> >::_M_ptr() const inlined at /usr/include/c++/10/bits/unique_ptr.h:422:27 in Castro::do_advance_ctu(double, double, int, int)
/usr/include/c++/10/bits/unique_ptr.h:173:58
std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> >::get() const
/usr/include/c++/10/bits/unique_ptr.h:422:27
std::unique_ptr<amrex::MultiFab, std::default_delete<amrex::MultiFab> >::operator*() const
/usr/include/c++/10/bits/unique_ptr.h:408:13
amrex::StateData::oldData()
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_StateData.H:341:77
amrex::AmrLevel::get_old_data(int)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_AmrLevel.H:304:89
Castro::do_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:127:52

 9: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x47449d]
    advance_status::operator=(advance_status&&) inlined at /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:645:90 in Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro.H:133:8
Castro::subcycle_advance_ctu(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_ctu.cpp:645:90

10: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x47292a]
    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++/10/bits/stl_algobase.h:237:14
Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:55:92

11: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x6fa1d9]
    std::vector<double, std::allocator<double> >::operator[](unsigned long) inlined at /raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:37:59 in amrex::Amr::timeStep(int, double, int, int, double)
/usr/include/c++/10/bits/stl_vector.h:1046:39
amrex::Vector<double, std::allocator<double> >::operator[](unsigned long)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:37:59
amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2018:68

12: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x6f0840]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2125:13

13: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x42a285]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:148:33

14: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f09b4fcd1e2]
    __libc_start_main
??:0

15: ./Castro3d.gnu.TEST.TPROF.MPI.OMP.ex() [0x438c2e]
    _start
??:0


===== TinyProfilers ======
main()
Amr::coarseTimeStep()
Amr::timeStep()
Castro::advance()
Castro::subcycle_advance_ctu()
Castro::do_advance_ctu()
Castro::construct_old_gravity()
Gravity::get_old_grav_vector()