Any chance this is all due to an OS X security setting?  Apple has
been putting locked doors on many, many things lately.


On Thu, May 5, 2022 at 8:57 AM Jeff Squyres (jsquyres) via users
<users@lists.open-mpi.org> wrote:
>
> Scott --
>
> Sorry; something I should have clarified in my original email: I meant you to 
> run the "ps" command **while mpirun was still hung**.  I.e., do it in another 
> terminal, before you hit ctrl-C to exit mpirun.
>
> I want to see if mpirun has launched the foo.sh or not.  Gilles' test is a 
> different mechanism to give a similar result (i.e., it makes a side effect 
> that allows you to tell if the child process was actually launched or not).  
> In the ps test, if there's *2* copies of mpirun, it would be useful to lldb 
> attach to each of them and get the backtrace from both (you have the parent 
> backtrace already; I'm really interested to see what the child mpirun's 
> backtrace is -- that would tell us the exact line number where the child is 
> hung.
>
> Gilles' observation about the firewall and IP/hostname stuff is interesting, 
> too.  The weirdness here is that the backtrace you posted earlier implies 
> that the parent mpirun hadn't even finished its fork/exec sequence (i.e., 
> mpirun itself is still in the "do_parent()" function, which implies that it 
> didn't complete the pipe handshake that happens immediately after forking the 
> child process... which is weird).
>
> --
> Jeff Squyres
> jsquy...@cisco.com
>
> ________________________________________
> From: Scott Sayres <ssay...@asu.edu>
> Sent: Wednesday, May 4, 2022 4:02 PM
> To: Jeff Squyres (jsquyres)
> Cc: Open MPI Users
> Subject: Re: [OMPI users] mpirun hangs on m1 mac w openmpi-4.1.3
>
> foo.sh is executable, again hangs without output.
> I command c x2 to return to shell, then
>
> ps auxwww | egrep 'mpirun|foo.sh'
>
> output shown below
>
>
> scottsayres@scotts-mbp trouble-shoot % ./foo.sh
>
> Wed May  4 12:59:15 MST 2022
>
> Wed May  4 12:59:16 MST 2022
>
> Wed May  4 12:59:17 MST 2022
>
> Wed May  4 12:59:18 MST 2022
>
> Wed May  4 12:59:19 MST 2022
>
> Wed May  4 12:59:20 MST 2022
>
> Wed May  4 12:59:21 MST 2022
>
> Wed May  4 12:59:22 MST 2022
>
> Wed May  4 12:59:23 MST 2022
>
> Wed May  4 12:59:24 MST 2022
>
> scottsayres@scotts-mbp trouble-shoot % mpirun -np 1 foo.sh
>
> ^C^C%                                                                         
>                                                                               
>       scottsayres@scotts-mbp trouble-shoot % ps auxwww | egrep 'mpirun|foo.sh'
>
> scottsayres      91795 100.0  0.0 409067920   1456 s002  R    12:59PM   
> 0:14.07 mpirun -np 1 foo.sh
>
> scottsayres      91798   0.0  0.0 408628368   1632 s002  S+    1:00PM   
> 0:00.00 egrep mpirun|foo.sh
>
> scottsayres@scotts-mbp trouble-shoot %
>
>
> On Wed, May 4, 2022 at 12:42 PM Jeff Squyres (jsquyres) 
> <jsquy...@cisco.com<mailto:jsquy...@cisco.com>> wrote:
> That backtrace seems to imply that the launch may not have completed.
>
> Can you make an executable script foo.sh with:
>
>
> #!/bin/bash
>
>
> i=0
>
> while test $i -lt 10; do
>
>     date
>
>     sleep 1
>
>     let i=$i+1
>
> done
>
> Make sure that foo.sh is executable and then run it via:
>
> mpirun -np 1 foo.sh
>
> If you start seeing output, good!    If it completes, better!
>
> If it hangs, and/or if you don't see any output at all, do this:
>
>
> ps auxwww | egrep 'mpirun|foo.sh'
>
> It should show mpirun and 2 copies of foo.sh (and probably a grep).  Does it?
>
> --
> Jeff Squyres
> jsquy...@cisco.com<mailto:jsquy...@cisco.com>
>
> ________________________________________
> From: Scott Sayres <ssay...@asu.edu<mailto:ssay...@asu.edu>>
> Sent: Wednesday, May 4, 2022 2:47 PM
> To: Open MPI Users
> Cc: Jeff Squyres (jsquyres)
> Subject: Re: [OMPI users] mpirun hangs on m1 mac w openmpi-4.1.3
>
> Following Jeff's advice, I have rebuilt open-mpi by hand using the -g option. 
>   This shows more information as below.   I am attempting George's advice of 
> how to track the child but notice that gdb does not support arm64.  
> attempting to update lldb.
>
>
> scottsayres@scotts-mbp openmpi-4.1.3 % lldb mpirun -- -np 1 hostname
>
> (lldb) target create "mpirun"
>
> Current executable set to 'mpirun' (arm64).
>
> (lldb) settings set -- target.run-args  "-np" "1" "hostname"
>
> (lldb) run
>
> Process 90950 launched: '/usr/local/bin/mpirun' (arm64)
>
> Process 90950 stopped
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
>     frame #0: 0x00000001bde25654 libsystem_kernel.dylib`read + 8
>
> libsystem_kernel.dylib`read:
>
> ->  0x1bde25654 <+8>:  b.lo   0x1bde25674               ; <+40>
>
>     0x1bde25658 <+12>: pacibsp
>
>     0x1bde2565c <+16>: stp    x29, x30, [sp, #-0x10]!
>
>     0x1bde25660 <+20>: mov    x29, sp
>
> Target 0: (mpirun) stopped.
>
> (lldb) ^C
>
> (lldb) thread backtrace
>
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>
>   * frame #0: 0x00000001bde25654 libsystem_kernel.dylib`read + 8
>
>     frame #1: 0x000000010056169c libopen-pal.40.dylib`opal_fd_read(fd=27, 
> len=20, buffer=0x000000016fdfe90c) at fd.c:51:14
>
>     frame #2: 0x00000001027b3388 
> mca_odls_default.so`do_parent(cd=0x0000600003e00000, read_fd=27) at 
> odls_default_module.c:495:14
>
>     frame #3: 0x00000001027b2d90 
> mca_odls_default.so`odls_default_fork_local_proc(cdptr=0x0000600003e00000) at 
> odls_default_module.c:651:12
>
>     frame #4: 0x00000001003246f8 
> libopen-rte.40.dylib`orte_odls_base_spawn_proc(fd=-1, sd=4, 
> cbdata=0x0000600003e00000) at odls_base_default_fns.c:1046:31
>
>     frame #5: 0x000000010057a7a0 
> libopen-pal.40.dylib`opal_libevent2022_event_base_loop [inlined] 
> event_process_active_single_queue(base=0x00000001007061c0) at event.c:1370:4 
> [opt]
>
>     frame #6: 0x000000010057a628 
> libopen-pal.40.dylib`opal_libevent2022_event_base_loop [inlined] 
> event_process_active(base=0x00000001007061c0) at event.c:1440:8 [opt]
>
>     frame #7: 0x000000010057a5ec 
> libopen-pal.40.dylib`opal_libevent2022_event_base_loop(base=0x00000001007061c0,
>  flags=<unavailable>) at event.c:1644:12 [opt]
>
>     frame #8: 0x0000000100003b04 mpirun`orterun(argc=4, 
> argv=0x000000016fdff268) at orterun.c:179:9
>
>     frame #9: 0x0000000100003904 mpirun`main(argc=4, argv=0x000000016fdff268) 
> at main.c:13:12
>
>     frame #10: 0x0000000100015088 dyld`start + 516
>
>
>
>
> --
> Scott G Sayres
> Assistant Professor
> School of Molecular Sciences (formerly Department of Chemistry & Biochemistry)
> Biodesign Center for Applied Structural Discovery
> Arizona State University

Reply via email to