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Subject: Re: [OMPI users] Segmentation fault with SLURM and non-local nodes
From: Michael Curtis (michael.curtis_at_[hidden])
Date: 2011-02-06 20:36:56


On 04/02/2011, at 9:35 AM, Samuel K. Gutierrez wrote:

Hi,

> I just tried to reproduce the problem that you are experiencing and was unable to.
>
> SLURM 2.1.15
> Open MPI 1.4.3 configured with: --with-platform=./contrib/platform/lanl/tlcc/debug-nopanasas

I compiled OpenMPI 1.4.3 (vanilla from source tarball) with the same platform file (the only change was to re-enable btl-tcp).

Unfortunately, the result is the same:
salloc -n16 ~/../openmpi/bin/mpirun --display-map ~/ServerAdmin/mpi
salloc: Granted job allocation 145

 ======================== JOB MAP ========================

 Data for node: Name: eng-ipc4.{FQDN} Num procs: 8
         Process OMPI jobid: [6932,1] Process rank: 0
         Process OMPI jobid: [6932,1] Process rank: 1
         Process OMPI jobid: [6932,1] Process rank: 2
         Process OMPI jobid: [6932,1] Process rank: 3
         Process OMPI jobid: [6932,1] Process rank: 4
         Process OMPI jobid: [6932,1] Process rank: 5
         Process OMPI jobid: [6932,1] Process rank: 6
         Process OMPI jobid: [6932,1] Process rank: 7

 Data for node: Name: ipc3 Num procs: 8
         Process OMPI jobid: [6932,1] Process rank: 8
         Process OMPI jobid: [6932,1] Process rank: 9
         Process OMPI jobid: [6932,1] Process rank: 10
         Process OMPI jobid: [6932,1] Process rank: 11
         Process OMPI jobid: [6932,1] Process rank: 12
         Process OMPI jobid: [6932,1] Process rank: 13
         Process OMPI jobid: [6932,1] Process rank: 14
         Process OMPI jobid: [6932,1] Process rank: 15

 =============================================================
[eng-ipc4:31754] *** Process received signal ***
[eng-ipc4:31754] Signal: Segmentation fault (11)
[eng-ipc4:31754] Signal code: Address not mapped (1)
[eng-ipc4:31754] Failing at address: 0x8012eb748
[eng-ipc4:31754] [ 0] /lib/libpthread.so.0(+0xf8f0) [0x7f81ce4bf8f0]
[eng-ipc4:31754] [ 1] ~/../openmpi/lib/libopen-rte.so.0(+0x7f869) [0x7f81cf262869]
[eng-ipc4:31754] [ 2] ~/../openmpi/lib/libopen-pal.so.0(+0x22338) [0x7f81cef93338]
[eng-ipc4:31754] [ 3] ~/../openmpi/lib/libopen-pal.so.0(+0x2297e) [0x7f81cef9397e]
[eng-ipc4:31754] [ 4] ~/../openmpi/lib/libopen-pal.so.0(opal_event_loop+0x1f) [0x7f81cef9356f]
[eng-ipc4:31754] [ 5] ~/../openmpi/lib/libopen-pal.so.0(opal_progress+0x89) [0x7f81cef87916]
[eng-ipc4:31754] [ 6] ~/../openmpi/lib/libopen-rte.so.0(orte_plm_base_daemon_callback+0x13f) [0x7f81cf262e20]
[eng-ipc4:31754] [ 7] ~/../openmpi/lib/libopen-rte.so.0(+0x84ed7) [0x7f81cf267ed7]
[eng-ipc4:31754] [ 8] ~/../home/../openmpi/bin/mpirun() [0x403f46]
[eng-ipc4:31754] [ 9] ~/../home/../openmpi/bin/mpirun() [0x402fb4]
[eng-ipc4:31754] [10] /lib/libc.so.6(__libc_start_main+0xfd) [0x7f81ce14bc4d]
[eng-ipc4:31754] [11] ~/../openmpi/bin/mpirun() [0x402ed9]
[eng-ipc4:31754] *** End of error message ***
salloc: Relinquishing job allocation 145
salloc: Job allocation 145 has been revoked.
zsh: exit 1 salloc -n16 ~/../openmpi/bin/mpirun --display-map ~/ServerAdmin/mpi

I've anonymised the paths and domain, otherwise pasted verbatim. The only odd thing I notice is that the launching machine uses its full domain name, whereas the other machine is referred to by the short name. Despite the FQDN, the domain does not exist in the DNS (for historical reasons), but does exist in the /etc/hosts file.

Any further clues would be appreciated. In case it may be relevant, core system versions are: glibc 2.11, gcc 4.4.3, kernel 2.6.32. One other point of difference may be that our environment is tcp (ethernet) based whereas the LANL test environment is not?

Michael