=== 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.pgi.TPROF.CUDA.ex() [0x7a0376]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/AMReX_BLBackTrace.cpp:167

 1: ./Castro3d.pgi.TPROF.CUDA.ex() [0x7a2ae2]
    amrex::BLBackTrace::handler(int)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/AMReX_BLBackTrace.cpp:71

 2: ./Castro3d.pgi.TPROF.CUDA.ex() [0x6f5f08]
    amrex::Gpu::Device::synchronize()
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/AMReX_GpuDevice.cpp:501

 3: ./Castro3d.pgi.TPROF.CUDA.ex() [0x54a8de]
    Castro::construct_ctu_hydro_source(double, double)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/Castro_ctu_hydro.cpp:3008

 4: ./Castro3d.pgi.TPROF.CUDA.ex() [0x4759a8]
    Castro::do_advance_ctu(double, double, int, int)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/Castro_advance_ctu.cpp:131

 5: ./Castro3d.pgi.TPROF.CUDA.ex() [0x47791e]
    Castro::subcycle_advance_ctu(double, double, int, int)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/Castro_advance_ctu.cpp:556

 6: ./Castro3d.pgi.TPROF.CUDA.ex() [0x465ac9]
    Castro::advance(double, double, int, int)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/Castro_advance.cpp:55

 7: ./Castro3d.pgi.TPROF.CUDA.ex() [0x8130f5]
    amrex::Amr::timeStep(int, double, int, int, double)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/AMReX_Amr.cpp:2112

 8: ./Castro3d.pgi.TPROF.CUDA.ex() [0x8131fc]
    amrex::Amr::timeStep(int, double, int, int, double)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/AMReX_Amr.cpp:2173

 9: ./Castro3d.pgi.TPROF.CUDA.ex() [0x8075b0]
    amrex::Amr::coarseTimeStep(double)
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/AMReX_Amr.cpp:2439

10: ./Castro3d.pgi.TPROF.CUDA.ex() [0x40c4fa]
    main
tmp_build_dir/s/3d.pgi.TPROF.CUDA.EXE/main.cpp:143

11: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7ff2c06d01a3]
    __libc_start_main
??:0

12: ./Castro3d.pgi.TPROF.CUDA.ex() [0x41215e]
    _start
??:0


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