=== 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.OMP.ex() [0x930fc8]
    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.OMP.ex() [0x930aea]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:15

 2: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x7a149e]
    amrex::ParallelDescriptor::Abort(int, bool)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_ParallelDescriptor.cpp:206:29

 3: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x7574aa]
    amrex::Assert_host(char const*, char const*, int, char const*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.cpp:310:9

 4: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x45950c]
    amrex::Assert(char const*, char const*, int, char const*) inlined at /raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArray.H:1066:5 in amrex::FabArray<amrex::FArrayBox>::fabPtr(amrex::MFIter const&) const
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX.H:209:5
amrex::FabArray<amrex::FArrayBox>::fabPtr(amrex::MFIter const&) const
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArray.H:1066:5

 5: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x46d759]
    amrex::Array4<double const> amrex::FabArray<amrex::FArrayBox>::array<amrex::FArrayBox, 0>(amrex::MFIter const&) const
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArray.H:1118:18

 6: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x7de1c3]
    void amrex::Copy<amrex::FArrayBox, void>(amrex::FabArray<amrex::FArrayBox>&, amrex::FabArray<amrex::FArrayBox> const&, int, int, int, amrex::IntVect const&) [clone ._omp_fn.0]
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArrayUtility.H:1504:42

 7: /lib64/libgomp.so.1(GOMP_parallel+0x46) [0x7f0bde57bd36]
    GOMP_parallel
??:0

 8: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x7cd2f9]
    void amrex::Copy<amrex::FArrayBox, void>(amrex::FabArray<amrex::FArrayBox>&, amrex::FabArray<amrex::FArrayBox> const&, int, int, int, amrex::IntVect const&)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_FabArrayUtility.H:1511:1

 9: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x85e95c]
    amrex::MultiFab::Copy(amrex::MultiFab&, amrex::MultiFab const&, int, int, int, int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_MultiFab.cpp:163:1

10: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x6b7412]
    Gravity::average_fine_ec_onto_crse_ec(int, int)
/raid/testing/castro-gfortran/Castro//Source/gravity/Gravity.cpp:1242:5

11: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x6b1d83]
    Gravity::actual_multilevel_solve(int, int, amrex::Vector<amrex::Vector<amrex::MultiFab*, std::allocator<amrex::MultiFab*> >, std::allocator<amrex::Vector<amrex::MultiFab*, std::allocator<amrex::MultiFab*> > > > const&, int)
/raid/testing/castro-gfortran/Castro//Source/gravity/Gravity.cpp:782:9

12: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x6b1760]
    Gravity::multilevel_solve_for_new_phi(int, int)
/raid/testing/castro-gfortran/Castro//Source/gravity/Gravity.cpp:712:77

13: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x42159c]
    Castro::post_init(double)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro.cpp:2379:49

14: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0xa2791e]
    amrex::Amr::FinalizeInit(double, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:1355:5

15: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0xa27381]
    amrex::Amr::initialInit(double, double, amrex::BoxArray const*, amrex::Vector<int, std::allocator<int> > const*)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:1265:5

16: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0xa26ce9]
    amrex::Amr::init(double, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:1143:13

17: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x4a3bf6]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:124:33

18: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f0bde3891e2]
    __libc_start_main
??:0

19: ./Castro3d.gnu.DEBUG.TPROF.MPI.OMP.ex() [0x40a7be]
    _start
??:0


===== TinyProfilers ======
main()
Amr::init()
Amr::initialInit()
Amr::FinalizeInit()
Castro::post_init()
Gravity::multilevel_solve_for_new_phi()
Gravity::actual_multilevel_solve()
Gravity::average_fine_ec_onto_crse_ec()