=== 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(+0x18b0b5) [0x5582c4a8d0b5] 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(+0x18cf33) [0x5582c4a8ef33] amrex::BLBackTrace::handler(int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8 2: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x2c619f) [0x5582c4bc819f] __amrex_error_module_MOD_amrex_error0 /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_error_mod.F90:41 3: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x3ba647) [0x5582c4cbc647] ca_sdc_update_centers_o4 /raid/testing/castro-gfortran/Castro//Source/sdc/sdc_util.F90:1442 4: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0xb6e5c) [0x5582c49b8e5c] Castro::do_sdc_update(int, int, double) /raid/testing/castro-gfortran/Castro//Source/sdc/Castro_sdc.cpp:216:19 5: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x4faa4) [0x5582c4951aa4] Castro::do_advance_sdc(double, double, int, int) /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance_sdc.cpp:216:18 6: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x4a720) [0x5582c494c720] Castro::advance(double, double, int, int) /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:61:42 7: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1d8434) [0x5582c4ada434] amrex::Amr::timeStep(int, double, int, int, double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36 8: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x1cbb4a) [0x5582c4acdb4a] 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 9: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x27d56) [0x5582c4929d56] main /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:152:33 10: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f1ab832c1a3] __libc_start_main ??:0 11: ./Castro2d.gnu.TEST.MPI.TRUESDC.ex(+0x2d1de) [0x5582c492f1de] _start ??:0