On 6/9/2012 6:49 PM, Ralph Castain wrote:
I fixed this one, I believe
Sorry, I'm confused.  You think you fixed the oob:ud:qp_init one you mean?  Which rev has the fix?
will have to look more at the loop_spawn issue later.
The original one I reported, I assume?  I see similar stacks on segfaults with a variety of tests.  So, I think it's not specific to loop_spawn.

On Sat, Jun 9, 2012 at 3:35 PM, Eugene Loh <eugene.loh@oracle.com> wrote:
On 6/9/2012 12:06 PM, Eugene Loh wrote:
With r26565:
   Enable orte progress threads and libevent thread support by default
Oracle MTT testing started showing new spawn_multiple failures.
Sorry.  I meant loop_spawn.

(And then, starting I think in 26582, the problem is masked behind another issue, "oob:ud:qp_init could not create queue pair", which is creating widespread problems for Cisco, IU, and Oracle MTT testing.  I suppose that's the subject of a different e-mail thread.)

I've only seen this in 64-bit.  Here are two segfaults, both from Linux/x86 systems running over TCP:

This one with GNU compilers:
   [...]
   parent: MPI_Comm_spawn #300 return : 0
   [burl-ct-v20z-26:28518] *** Process received signal ***
   [burl-ct-v20z-26:28518] Signal: Segmentation fault (11)
   [burl-ct-v20z-26:28518] Signal code: Address not mapped (1)
   [burl-ct-v20z-26:28518] Failing at address: (nil)
   [burl-ct-v20z-26:28518] [ 0] /lib64/libpthread.so.0 [0x3a21c0e7c0]
   [burl-ct-v20z-26:28518] [ 1] /lib64/libc.so.6(memcpy+0x35) [0x3a2107bde5]
   [burl-ct-v20z-26:28518] [ 2] /workspace/tdontje/hpc/mtt-scratch/burl-ct-v20z-26/ompi-tarball-testing/installs/smMv/install/lib/lib64/openmpi/mca_oob_tcp.so(mca_oob_tcp_msg_copy+0x58)
   [burl-ct-v20z-26:28518] [ 3] /workspace/tdontje/hpc/mtt-scratch/burl-ct-v20z-26/ompi-tarball-testing/installs/smMv/install/lib/lib64/openmpi/mca_oob_tcp.so
   [burl-ct-v20z-26:28518] [ 4] /workspace/tdontje/hpc/mtt-scratch/burl-ct-v20z-26/ompi-tarball-testing/installs/smMv/install/lib/lib64/openmpi/mca_oob_tcp.so(mca_oob_tcp_recv_nb+0x314)
   [burl-ct-v20z-26:28518] [ 5] /workspace/tdontje/hpc/mtt-scratch/burl-ct-v20z-26/ompi-tarball-testing/installs/smMv/install/lib/lib64/openmpi/mca_rml_oob.so(orte_rml_oob_recv_buffer_nb+0xff)
   [burl-ct-v20z-26:28518] [ 6] /workspace/tdontje/hpc/mtt-scratch/burl-ct-v20z-26/ompi-tarball-testing/installs/smMv/install/lib/lib64/openmpi/mca_dpm_orte.so
   [burl-ct-v20z-26:28518] [ 7] /workspace/tdontje/hpc/mtt-scratch/burl-ct-v20z-26/ompi-tarball-testing/installs/smMv/install/lib/lib64/libmpi.so.0(PMPI_Comm_spawn+0x2ee)
   [burl-ct-v20z-26:28518] [ 8] dynamic/loop_spawn [0x40120b]
   [burl-ct-v20z-26:28518] [ 9] /lib64/libc.so.6(__libc_start_main+0xf4) [0x3a2101d994]
   [burl-ct-v20z-26:28518] [10] dynamic/loop_spawn [0x400dd9]
   [burl-ct-v20z-26:28518] *** End of error message ***

This one with Oracle Studio compilers:
   parent: MPI_Comm_spawn #0 return : 0
   parent: MPI_Comm_spawn #20 return : 0
   [burl-ct-x2200-12:02348] *** Process received signal ***
   [burl-ct-x2200-12:02348] Signal: Segmentation fault (11)
   [burl-ct-x2200-12:02348] Signal code: Address not mapped (1)
   [burl-ct-x2200-12:02348] Failing at address: 0x10
   [burl-ct-x2200-12:02348] [ 0] /lib64/libpthread.so.0 [0x318ac0de80]
   [burl-ct-x2200-12:02348] [ 1] /workspace/tdontje/hpc/mtt-scratch/burl-ct-x2200-12/ompi-tarball-testing/installs/Q7wT/install/lib/lib64/openmpi/mca_oob_tcp.so(mca_oob_tcp_msg_recv_handler+0xe3)
   [burl-ct-x2200-12:02348] [ 2] /workspace/tdontje/hpc/mtt-scratch/burl-ct-x2200-12/ompi-tarball-testing/installs/Q7wT/install/lib/lib64/openmpi/mca_oob_tcp.so
   [burl-ct-x2200-12:02348] [ 3] /workspace/tdontje/hpc/mtt-scratch/burl-ct-x2200-12/ompi-tarball-testing/installs/Q7wT/install/lib/lib64/libmpi.so.0
   [burl-ct-x2200-12:02348] [ 4] /workspace/tdontje/hpc/mtt-scratch/burl-ct-x2200-12/ompi-tarball-testing/installs/Q7wT/install/lib/lib64/libmpi.so.0(opal_libevent2019_event_base_loop+0x7c7)
   [burl-ct-x2200-12:02348] [ 5] /workspace/tdontje/hpc/mtt-scratch/burl-ct-x2200-12/ompi-tarball-testing/installs/Q7wT/install/lib/lib64/libmpi.so.0
   [burl-ct-x2200-12:02348] [ 6] /lib64/libpthread.so.0 [0x318ac06307]
   [burl-ct-x2200-12:02348] [ 7] /lib64/libc.so.6(clone+0x6d) [0x318a0d1ded]
   [burl-ct-x2200-12:02348] *** End of error message ***

Sometimes, I see a hang rather than a segfault.