=== 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: ./Maestro3d.pgi.CUDA.ex() [0x81fa86]
    amrex::BLBackTrace::print_backtrace_info(_IO_FILE*)
tmp_build_dir/s/3d.pgi.CUDA.EXE/AMReX_BLBackTrace.cpp:167

 1: ./Maestro3d.pgi.CUDA.ex() [0x8221f2]
    amrex::BLBackTrace::handler(int)
tmp_build_dir/s/3d.pgi.CUDA.EXE/AMReX_BLBackTrace.cpp:71

 2: ./Maestro3d.pgi.CUDA.ex() [0x4d3b68]
    amrex::Gpu::synchronize()
/raid/testing/maestroex-gpu/amrex//Src/Base/AMReX_GpuDevice.H:148

 3: ./Maestro3d.pgi.CUDA.ex() [0x7e1255]
    amrex::MFIter::~MFIter()
tmp_build_dir/s/3d.pgi.CUDA.EXE/AMReX_MFIter.cpp:216

 4: ./Maestro3d.pgi.CUDA.ex() [0x56fa5b]
    Maestro::ModifyScalForce(amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> >&, amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> > const&, amrex::Vector<std::array<amrex::MultiFab, 3ul>, std::allocator<std::array<amrex::MultiFab, 3ul> > > const&, amrex::PODVector<double, amrex::ManagedArenaAllocator<double> > const&, amrex::PODVector<double, amrex::ManagedArenaAllocator<double> > const&, amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> > const&, int, amrex::Vector<amrex::BCRec, std::allocator<amrex::BCRec> > const&, int)
tmp_build_dir/s/3d.pgi.CUDA.EXE/MaestroForce.cpp:239

 5: ./Maestro3d.pgi.CUDA.ex() [0x4e4fa0]
    Maestro::DensityAdvance(int, amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> >&, amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> >&, amrex::Vector<std::array<amrex::MultiFab, 3ul>, std::allocator<std::array<amrex::MultiFab, 3ul> > >&, amrex::Vector<std::array<amrex::MultiFab, 3ul>, std::allocator<std::array<amrex::MultiFab, 3ul> > >&, amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> >&, amrex::Vector<amrex::MultiFab, std::allocator<amrex::MultiFab> >&, amrex::Vector<std::array<amrex::MultiFab, 3ul>, std::allocator<std::array<amrex::MultiFab, 3ul> > >&, amrex::Vector<std::array<amrex::MultiFab, 3ul>, std::allocator<std::array<amrex::MultiFab, 3ul> > > const&, amrex::PODVector<double, amrex::ManagedArenaAllocator<double> > const&)
tmp_build_dir/s/3d.pgi.CUDA.EXE/MaestroDensityAdvance.cpp:70

 6: ./Maestro3d.pgi.CUDA.ex() [0x43c2f1]
    Maestro::AdvanceTimeStep(bool)
tmp_build_dir/s/3d.pgi.CUDA.EXE/MaestroAdvance.cpp:439

 7: ./Maestro3d.pgi.CUDA.ex() [0x5999f0]
    Maestro::InitIter()
tmp_build_dir/s/3d.pgi.CUDA.EXE/MaestroInit.cpp:808

 8: ./Maestro3d.pgi.CUDA.ex() [0x59ffc4]
    Maestro::Init()
tmp_build_dir/s/3d.pgi.CUDA.EXE/MaestroInit.cpp:196

 9: ./Maestro3d.pgi.CUDA.ex() [0x40bdab]
    main
tmp_build_dir/s/3d.pgi.CUDA.EXE/main.cpp:63

10: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f6b137cd1a3]
    __libc_start_main
??:0

11: ./Maestro3d.pgi.CUDA.ex() [0x411aae]
    _start
??:0