[MPICH] Using mpiexec with gdg

[Christian Zemlin]

Dear MPICH experts,

I am using MPICH2 on a Beowulf cluster, and I am trouble setting breakpoints.

This is a typical interaction I have with gdb:

testm at master:~/test> mpiexec -gdb -n 4 ./RNC
0-3:  (gdb) break main
0-3:  Note: breakpoint 1 also set at pc 0x402560.
0-3:  Breakpoint 2 at 0x402560
0-3:  (gdb) run
0-3:  Continuing.
0:  
0:  Program received signal SIGSEGV, Segmentation fault.
0:  0x00002b49f7267ace in _int_free () from /lib64/libc.so.6
0:  (gdb) 0:  (gdb) 

The problem is that although I set the breakpoint, the program does not stop.

Any ideas what I am doing wrong?

Regards,

Christian
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