onday, June 09, 2014 8:24 PM
To: Open MPI Users
Subject: Re: [OMPI users] intermittent segfaults with openib on ring_c.c
I'm digging out from mail backlog from being at the MPI Forum last week...
Yes, from looking at the stack traces, it's segv'ing inside the memory
allocator, which
---Original Message-
>> From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph Castain
>> Sent: Wednesday, June 04, 2014 4:48 PM
>> To: Open MPI Users
>> Subject: Re: [OMPI users] intermittent segfaults with openib on ring_c.c
>>
>> Urggg...
users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph Castain
> Sent: Wednesday, June 04, 2014 4:48 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] intermittent segfaults with openib on ring_c.c
>
> Urggg...unfortunately, the people who know the most about that code
From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph Castain
Sent: Wednesday, June 04, 2014 4:48 PM
To: Open MPI Users
Subject: Re: [OMPI users] intermittent segfaults with openib on ring_c.c
Urggg...unfortunately, the people who know the most about that code are all
at the MPI
t; #13 0x in ?? ()
>
> Greg
>
> -----Original Message-
> From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph Castain
> Sent: Wednesday, June 04, 2014 3:49 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] intermittent segfaults with
t;>> (db_restrict_local=32 ' ') at
>>>> ../../../../openmpi-1.8.1/orte/mca/ess/base/ess_base_std_app.c:245
>>>> #10 0x2b48f45b069f in rte_init () at
>>>> ../../../../../openmpi-1.8.1/orte/mca/ess/env/ess_env_module.c:146
>>>> #11 0
gt;>>> #10 0x2b48f45b069f in rte_init () at
>>>> ../../../../../openmpi-1.8.1/orte/mca/ess/env/ess_env_module.c:146
>>>> #11 0x2b48f26935ab in orte_init (pargc=0x2b48f6300020,
>>>> pargv=0x2b48f63000b8, flags=8) at
>>>> ../../openmp
;>> #12 0x2b48f1739d38 in ompi_mpi_init (argc=1, argv=0x7fffebf0d1f8,
>>> requested=8, provided=0x0) at
>>> ../../openmpi-1.8.1/ompi/runtime/ompi_mpi_init.c:464
>>> #13 0x2b48f1760a37 in PMPI_Init (argc=0x2b48f6300020,
>>> argv=0x2b48f63000b8) at pi
/../../openmpi-1.8.1/opal/mca/memory/linux/malloc.c:4098
#1 0x in ?? ()
Is that helpful?
Greg
*From:*Fischer, Greg A.
*Sent:*Wednesday, June 04, 2014 10:17 AM
*To:*'Open MPI Users'
*Cc:*Fischer, Greg A.
*Subject:*RE: [OMPI users] intermittent segfaults with openib on ring_c.c
i-1.8.1/ompi/runtime/ompi_mpi_init.c:464
> #13 0x2b48f1760a37 in PMPI_Init (argc=0x2b48f6300020,
> argv=0x2b48f63000b8) at pinit.c:84
> #14 0x004024ef in main (argc=1, argv=0x7fffebf0d1f8) at ring_c.c:19
>
> From: users [mailto:users-boun...@open-mpi.org] On Behalf Of Ralph C
24382136)
at ../../../../../openmpi-1.8.1/opal/mca/memory/linux/malloc.c:4098
#1 0x in ?? ()
Is that helpful?
Greg
From: Fischer, Greg A.
Sent: Wednesday, June 04, 2014 10:17 AM
To: 'Open MPI Users'
Cc: Fischer, Greg A.
Subject: RE: [OMPI users] intermittent segfaults
-1.8.1/opal/mca/memory/linux/malloc.c:4098
> #1 0x in ?? ()
>
> Is that helpful?
>
> Greg
>
> From: Fischer, Greg A.
> Sent: Wednesday, June 04, 2014 10:17 AM
> To: 'Open MPI Users'
> Cc: Fischer, Greg A.
> Subject: RE: [OMPI users] int
eg
From: Fischer, Greg A.
Sent: Wednesday, June 04, 2014 10:17 AM
To: 'Open MPI Users'
Cc: Fischer, Greg A.
Subject: RE: [OMPI users] intermittent segfaults with openib on ring_c.c
I recompiled with "-enable-debug" but it doesn't seem to be providing any more
informat
.@open-mpi.org] On Behalf Of Ralph Castain
Sent: Tuesday, June 03, 2014 11:54 PM
To: Open MPI Users
Subject: Re: [OMPI users] intermittent segfaults with openib on ring_c.c
Sounds odd - can you configure OMPI --enable-debug and run it again? If it
fails and you can get a core dump, could you tell
Sounds odd - can you configure OMPI --enable-debug and run it again? If it
fails and you can get a core dump, could you tell us the line number where it
is failing?
On Jun 3, 2014, at 9:58 AM, Fischer, Greg A. wrote:
> Apologies – I forgot to add some of the information requested by the FAQ:
Apologies - I forgot to add some of the information requested by the FAQ:
1. OpenFabrics is provided by the Linux distribution:
[binf102:fischega] $ rpm -qa | grep ofed
ofed-kmp-default-1.5.4.1_3.0.76_0.11-0.11.5
ofed-1.5.4.1-0.11.5
ofed-doc-1.5.4.1-0.11.5
2. Linux Distro / Kernel:
Hello openmpi-users,
I'm running into a perplexing problem on a new system, whereby I'm experiencing
intermittent segmentation faults when I run the ring_c.c example and use the
openib BTL. See an example below. Approximately 50% of the time it provides the
expected output, but the other 50% of
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