=== 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.TEST.TPROF.MPI.TRUESDC.ex() [0x5bb076]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:179:39

 1: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x5bd1ed]
    amrex::BLBackTrace::handler(int)
/raid/testing/castro-gfortran/amrex//Src/Base/AMReX_BLBackTrace.cpp:85:8

 2: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x4b524d]
    Castro::construct_old_geom_source(amrex::MultiFab&, amrex::MultiFab&, double, double)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_geom.cpp:14:3

 3: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x4b22d5]
    Castro::construct_old_source(int, amrex::MultiFab&, amrex::MultiFab&, double, double) inlined at /raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:130:29 in Castro::do_old_sources(amrex::MultiFab&, amrex::MultiFab&, amrex::MultiFab&, double, double, bool)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:323:34
Castro::do_old_sources(amrex::MultiFab&, amrex::MultiFab&, amrex::MultiFab&, double, double, bool)
/raid/testing/castro-gfortran/Castro//Source/sources/Castro_sources.cpp:130:29

 4: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x44e55a]
    Castro::do_advance_sdc(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_sdc.cpp:121:30

 5: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x449892]
    Castro::advance(double, double, int, int)
/raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:62:42

 6: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x61fc59]
    std::vector<double, std::allocator<double> >::operator[](unsigned long) inlined at /raid/testing/castro-gfortran/amrex//Src/Base/AMReX_Vector.H:36:52 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:36:52
amrex::Amr::timeStep(int, double, int, int, double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:1990:68

 7: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x615f50]
    amrex::Amr::coarseTimeStep(double)
/raid/testing/castro-gfortran/amrex//Src/Amr/AMReX_Amr.cpp:2097:13

 8: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x422e45]
    main
/raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:134:33

 9: /lib64/libc.so.6(__libc_start_main+0xf2) [0x7f6ac87ba1e2]
    __libc_start_main
??:0

10: ./Castro2d.gnu.TEST.TPROF.MPI.TRUESDC.ex() [0x42b68e]
    _start
??:0


===== TinyProfilers ======
main()
Amr::coarseTimeStep()
Amr::timeStep()
Castro::advance()
Castro::do_advance_sdc()
Castro::do_old_sources()
Castro::construct_old_source()