=== 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.ex(+0x1eda05) [0x55d9db7e0a05] amrex::BLBackTrace::print_backtrace_info(_IO_FILE*) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:167:39 1: ./Castro2d.gnu.TEST.MPI.ex(+0x1ef883) [0x55d9db7e2883] amrex::BLBackTrace::handler(int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_BLBackTrace.cpp:71:8 2: ./Castro2d.gnu.TEST.MPI.ex(+0x33696f) [0x55d9db92996f] __amrex_error_module_MOD_amrex_error0 /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_error_mod.F90:41 3: ./Castro2d.gnu.TEST.MPI.ex(+0x3f1dc2) [0x55d9db9e4dc2] hmmat3 /raid/testing/castro-gfortran/Castro//Source/radiation/HABEC_nd.F90:778 4: ./Castro2d.gnu.TEST.MPI.ex(+0xd2d26) [0x55d9db6c5d26] HypreMultiABec::loadMatrix() /raid/testing/castro-gfortran/Castro//Source/radiation/HypreMultiABec.cpp:1452:19 5: ./Castro2d.gnu.TEST.MPI.ex(+0xf4a42) [0x55d9db6e7a42] RadSolve::levelSolve(int, amrex::MultiFab&, int, amrex::MultiFab&, double) /raid/testing/castro-gfortran/Castro//Source/radiation/RadSolve.cpp:438:23 6: ./Castro2d.gnu.TEST.MPI.ex(+0x108208) [0x55d9db6fb208] void amrex::FabArray::setVal(double) inlined at /raid/testing/castro-gfortran/Castro//Source/radiation/SGRadSolver.cpp:221:23 in Radiation::single_group_update(int, int, int) /raid/testing/castro-gfortran/AMReX//Src/Base/AMReX_FabArray.H:1612:5 Radiation::single_group_update(int, int, int) /raid/testing/castro-gfortran/Castro//Source/radiation/SGRadSolver.cpp:221:23 7: ./Castro2d.gnu.TEST.MPI.ex(+0x11a8c3) [0x55d9db70d8c3] Castro::final_radiation_call(amrex::MultiFab&, int, int) /raid/testing/castro-gfortran/Castro//Source/radiation/Castro_radiation.cpp:53:36 8: ./Castro2d.gnu.TEST.MPI.ex(+0x4ce98) [0x55d9db63fe98] Castro::advance(double, double, int, int) /raid/testing/castro-gfortran/Castro//Source/driver/Castro_advance.cpp:111:21 9: ./Castro2d.gnu.TEST.MPI.ex(+0x23ab34) [0x55d9db82db34] amrex::Amr::timeStep(int, double, int, int, double) /raid/testing/castro-gfortran/AMReX//Src/Amr/AMReX_Amr.cpp:2121:36 10: ./Castro2d.gnu.TEST.MPI.ex(+0x22e24a) [0x55d9db82124a] 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 11: ./Castro2d.gnu.TEST.MPI.ex(+0x2ae16) [0x55d9db61de16] main /raid/testing/castro-gfortran/Castro//Source/driver/main.cpp:152:33 12: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f0e20b371a3] __libc_start_main ??:0 13: ./Castro2d.gnu.TEST.MPI.ex(+0x30b3e) [0x55d9db623b3e] _start ??:0