On 16/09/16 11:54, Mahmood Naderan wrote: >> No, that's not necessary. > > So, within GDB, I ran the program, but disas command says "no frame selected". please see below > > $ cat sc.sh > #!/bin/bash > > ulimit -c unlimited > > exec /share/apps/siesta/siesta-4.0/tpar/transiesta < trans-cc-bt-cc-163-20.fdf > > $ cat sc2.sh > > #!/bin/bash > > /share/apps/siesta/openmpi-2.0.0/bin/mpirun -hostfile hosts.txt -np 15 sc.sh > $ gdb --args bash sc2.sh > (gdb) r > > Starting program: /bin/bash sc2.sh > > Detaching after fork from child process 29640. > > .... > .... > -------------------------------------------------------------------------- > > mpirun noticed that process rank 0 with PID 9443 on node compute-0-1 exited on signal 4 (Illegal instruction). > > -------------------------------------------------------------------------- > > Program exited with code 0204. > > (gdb) disas > > No frame selected. In these circumstances 'x/i $pc' may be your friend, it will just try to disassemble the exact instruction at the current PC. If that still doesn't work, then your program may have jumped off into the weeds and the PC may not even be pointing at a valid location (but then I'd not expect the signal to be SIGILL in that case). HTH. R.
