=== 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.MPI.TRUESDC.ex(+0x18a945) [0x5629ef184945] amrex::BLBackTrace::print_backtrace_info(_IO_FILE*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:167:39 1: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x18c7c3) [0x5629ef1867c3] amrex::BLBackTrace::handler(int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8 2: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x49c5c) [0x5629ef043c5c] Castro::advance(double, double, int, int) /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:73:21 3: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1d7cc4) [0x5629ef1d1cc4] amrex::Amr::timeStep(int, double, int, int, double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36 4: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1cb3da) [0x5629ef1c53da] std::vector >::operator[](unsigned long) inlined at /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Vector.H:33:54 in amrex::Amr::coarseTimeStep(double) /usr/include/c++/9/bits/stl_vector.h:1042:2 amrex::Vector >::operator[](unsigned long) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_Vector.H:33:54 amrex::Amr::coarseTimeStep(double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2439:26 5: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x27d56) [0x5629ef021d56] main /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:152:33 6: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7efdc911d1a3] __libc_start_main ??:0 7: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x2d12e) [0x5629ef02712e] _start ??:0