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From: Greg Watson (gwatson_at_[hidden])
Date: 2005-12-17 13:16:11


Here's the stacktrace:

#0 0x00ae1fe8 in orte_pls_rsh_launch (jobid=1) at pls_rsh_module.c:714
714 if (mca_pls_rsh_component.debug) {
(gdb) where
#0 0x00ae1fe8 in orte_pls_rsh_launch (jobid=1) at pls_rsh_module.c:714
#1 0x00a29642 in orte_rmgr_urm_spawn ()
    from /usr/local/ompi/lib/openmpi/mca_rmgr_urm.so
#2 0x0804a0d4 in orterun (argc=4, argv=0xbff88594) at orterun.c:373
#3 0x08049b16 in main (argc=4, argv=0xbff88594) at main.c:13

And the contents of mca_pls_rsh_component:

(gdb) p mca_pls_rsh_component
$2 = {super = {pls_version = {mca_major_version = 1,
mca_minor_version = 0,
       mca_release_version = 0, mca_type_name = "pls", '\0' <repeats
28 times>,
       mca_type_major_version = 1, mca_type_minor_version = 0,
       mca_type_release_version = 0,
       mca_component_name = "rsh", '\0' <repeats 60 times>,
       mca_component_major_version = 1, mca_component_minor_version = 0,
       mca_component_release_version = 1,
       mca_open_component = 0xae0a80 <orte_pls_rsh_component_open>,
       mca_close_component = 0xae09a0 <orte_pls_rsh_component_close>},
     pls_data = {mca_is_checkpointable = true},
     pls_init = 0xae093c <orte_pls_rsh_component_init>}, debug = false,
   reap = true, assume_same_shell = true, delay = 1, priority = 10,
   argv = 0x90e0418, argc = 2, orted = 0x90de438 "orted",
   path = 0x90e0960 "/usr/bin/ssh", num_children = 0, num_concurrent
= 128,
   lock = {super = {obj_class = 0x804ec38, obj_reference_count = 1},
     m_lock_pthread = {__data = {__lock = 0, __count = 0, __owner = 0,
         __kind = 0, __nusers = 0, __spins = 0},
       __size = '\0' <repeats 23 times>, __align = 0}, m_lock_atomic
= {u = {
         lock = 0, sparc_lock = 0 '\0', padding = "\000\000\000"}}},
cond = {
     super = {obj_class = 0x804ec18, obj_reference_count = 1},
c_waiting = 0,
     c_signaled = 0, c_cond = {__data = {__lock = 0, __futex = 0,
         __total_seq = 0, __wakeup_seq = 0, __woken_seq = 0, __mutex
= 0x0,
         __nwaiters = 0, __broadcast_seq = 0},
       __size = '\0' <repeats 47 times>, __align = 0}}}

I can't see why it is segfaulting at this particular line.

Greg

On Dec 16, 2005, at 5:55 PM, Jeff Squyres wrote:

> On Dec 16, 2005, at 10:47 AM, Greg Watson wrote:
>
>> I finally worked out why I couldn't reproduce the problem. You're not
>> going to like it though.
>
> You're right -- this kind of buglet is among the most un-fun. :-(
>
>> Here's the stacktracefrom the core file:
>>
>> #0 0x00e93fe8 in orte_pls_rsh_launch ()
>> from /usr/local/ompi/lib/openmpi/mca_pls_rsh.so
>> #1 0x0023c642 in orte_rmgr_urm_spawn ()
>> from /usr/local/ompi/lib/openmpi/mca_rmgr_urm.so
>> #2 0x0804a0d4 in orterun (argc=5, argv=0xbfab2e84) at orterun.c:373
>> #3 0x08049b16 in main (argc=5, argv=0xbfab2e84) at main.c:13
>
> Can you recompile this one file with -g? Specifically, cd into the
> orte/mca/pla/rsh dir and "make clean". Then "make". Then cut-n-
> paste the compile line for that one file to a shell prompt, and put
> in a -g.
>
> Then either re-install that component (it looks like you're doing a
> dynamic build with separate components, so you can do "make install"
> right from the rsh dir) or re-link liborte and re-install that and re-
> run. The corefile might give something a little more meaningful in
> this case...?
>
> --
> {+} Jeff Squyres
> {+} The Open MPI Project
> {+} http://www.open-mpi.org/
>
>
>
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