Hi, I have a problem of MPI 1.2.0rc being locked in a "pthread_condition_wait" call. This happen whatever the application when openmpi has been compiled with multi-thread support.
The full "configure" options are "./configure --prefix=/usr/local/Mpi/openmpi-1.2 --enable-mpi-threads --enable-progress-threads --with-threads=posix --enable-smp-lock" An example of GDB session is provided here below: ------------------------------------------------------------------------------------------------------------- >GNU gdb 6.3-debian >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 "i386-linux"...Using host libthread_db >library "/lib/tls/libthread_db.so.1". > >(gdb) run -np 1 spawn6 >Starting program: /usr/local/openmpi-1.2.0/bin/mpirun -np 1 spawn6 >[Thread debugging using libthread_db enabled] >[New Thread 1076191360 (LWP 29006)] >[New Thread 1084808112 (LWP 29009)] >main******************************* >main : Lancement MPI* > >Program received signal SIGINT, Interrupt. >[Switching to Thread 1084808112 (LWP 29009)] >0x401f0523 in poll () from /lib/tls/libc.so.6 >(gdb) where >#0 0x401f0523 in poll () from /lib/tls/libc.so.6 >#1 0x40081c7c in opal_poll_dispatch () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#2 0x4007e4f1 in opal_event_base_loop () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#3 0x4007e36b in opal_event_loop () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#4 0x4007f423 in opal_event_run () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#5 0x40115b63 in start_thread () from /lib/tls/libpthread.so.0 >#6 0x401f918a in clone () from /lib/tls/libc.so.6 >(gdb) bt >#0 0x401f0523 in poll () from /lib/tls/libc.so.6 >#1 0x40081c7c in opal_poll_dispatch () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#2 0x4007e4f1 in opal_event_base_loop () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#3 0x4007e36b in opal_event_loop () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#4 0x4007f423 in opal_event_run () from >/usr/local/openmpi-1.2.0/lib/libopen-pal.so.0 >#5 0x40115b63 in start_thread () from /lib/tls/libpthread.so.0 >#6 0x401f918a in clone () from /lib/tls/libc.so.6 >(gdb) info threads >* 2 Thread 1084808112 (LWP 29009) 0x401f0523 in poll () from >/lib/tls/libc.so.6 > 1 Thread 1076191360 (LWP 29006) 0x40118295 in >pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 >(gdb) thread 1 >[Switching to thread 1 (Thread 1076191360 (LWP 29006))]#0 0x40118295 >in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 >(gdb) bt >#0 0x40118295 in pthread_cond_wait@@GLIBC_2.3.2 () from >/lib/tls/libpthread.so.0 >#1 0x0804cb68 in opal_condition_wait (c=0x8050e4c, m=0x8050e28) at >condition.h:64 >#2 0x0804a4fe in orterun (argc=4, argv=0xbffff844) at orterun.c:436 >#3 0x0804a046 in main (argc=4, argv=0xbffff844) at main.c:13 >(gdb) where >#0 0x40118295 in pthread_cond_wait@@GLIBC_2.3.2 () from >/lib/tls/libpthread.so.0 >#1 0x0804cb68 in opal_condition_wait (c=0x8050e4c, m=0x8050e28) at >condition.h:64 >#2 0x0804a4fe in orterun (argc=4, argv=0xbffff844) at orterun.c:436 >#3 0x0804a046 in main (argc=4, argv=0xbffff844) at main.c:13 ------------------------------------------------------------------------------------------------------------- I have read the other threads related to multi-threads support. I have understood that multi-thread support will not be a priority before the end of the year. The thing is this locking stuff problem appeared only since 1.1.2 openmpi release and as it is a locking problem, I was wondering if you could do an exception and try to analyse this one before the end of the year. Thanks, Herve P.S.: my OS is a debian sarge ------------------------ ALICE C'EST ENCORE MIEUX AVEC CANAL+ LE BOUQUET ! --------------- Découvrez vite l'offre exclusive ALICEBOX et CANAL+ LE BOUQUET, en cliquant ici http://alicebox.fr Soumis à conditions.
