Singletons fork/exec a daemon to support them - my guess is that gdb may not like it on your machine?
FWIW - it runs fine for me using the developer's trunk. You might try with 1.6.4 in case it's a bug in 1.6.0 On Feb 21, 2013, at 3:18 PM, Geoffrey Irving <irv...@naml.us> wrote: > The attached program illustrates the problem. It forks, and the child > calls MPI_Init. This works fine unless I'm inside gdb. Inside gdb, > MPI_Init silently crashes. > > I'm using OpenMPI 1.6.0 on Mac 10.8.2. I'm running the program > directly, not through mpirun. > > Any ideas what might be wrong? > > Thanks, > Geoffrey > > cone:scratch% /usr/local/bin/mpicc -o fork-bug fork-bug.c > cone:scratch% ./fork-bug > We're an MPI program! > child status = 0 > cone:scratch% gdb ./fork-bug > gdb ./fork-bug > GNU gdb 6.3.50-20050815 (Apple version gdb-1824) (Thu Nov 15 10:42:43 UTC > 2012) > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you are > welcome to change it and/or distribute copies of it under certain conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "x86_64-apple-darwin"...Reading symbols for > shared libraries ... done > > (gdb) run > Reading symbols for shared libraries ++............................. done > child status = 5 > > Program exited normally. > (gdb) cone:scratch% > <fork-bug.c>_______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
