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Subject: Re: [OMPI devel] bug?
From: Eugene Loh (Eugene.Loh_at_[hidden])
Date: 2009-09-25 10:57:20


Thanks, filed as https://svn.open-mpi.org/trac/ompi/ticket/2030

Ralph Castain wrote:

> Circling some off-list comments back to the list...while we could and
> should error-out easier, this really isn't a supportable operation.
> What the cmd
>
> mpirun -n 2 -slot-list 1,3 foo
>
> appears to do is cause us to launch a 2-process job consisting of
> vpid=1 and vpid=3, as opposed to the normal vpid=0 and 1.
>
> Not only is ORTE not prepared to handle this scenario, I believe it
> will cause problems in some areas within OMPI.
>
> I can try to make it fail nicer - someone with more knowledge of the
> intended slot-list behavior would have to make it do what they
> actually intended, or at least explain what is supposed o happen.
>
> Ralph
>
> On Sep 24, 2009, at 7:03 PM, Eugene Loh wrote:
>
>> mpirun -V
>> mpirun (Open MPI) 1.4a1-1
>>
>> Ralph Castain wrote:
>>
>>> Sigh - you really need to remember to tell us what version you're
>>> talking about.
>>>
>>> On Sep 24, 2009, at 5:39 PM, Eugene Loh wrote:
>>>
>>>> I assume this is a bug?
>>>>
>>>> % mpirun -np 2 -slot-list 1,3 hostname
>>>> [saem9:10337] [[455,0],0] ORTE_ERROR_LOG: Not found in file base/
>>>> odls_base_default_fns.c at line 875
>>>> [saem9:10337] *** Process received signal ***
>>>> [saem9:10337] Signal: Segmentation fault (11)
>>>> [saem9:10337] Signal code: Address not mapped (1)
>>>> [saem9:10337] Failing at address: 0x4c
>>>> [saem9:10337] [ 0] [0xffffe600]
>>>> [saem9:10337] [ 1] /home/eugene/CTperf/test-CT821/paff_bug2/src/
>>>> myopt/lib/libopen-rte.so.0(orte_plm_base_launch_apps+0x78a)
>>>> [0xf7f8c206]
>>>> [saem9:10337] [ 2] /home/eugene/CTperf/test-CT821/paff_bug2/src/
>>>> myopt/lib/openmpi/mca_plm_rsh.so [0xf7d13564]
>>>> [saem9:10337] [ 3] mpirun [0x804b49d]
>>>> [saem9:10337] [ 4] mpirun [0x804a456]
>>>> [saem9:10337] [ 5] /lib/libc.so.6(__libc_start_main+0xdc)
>>>> [0xf7d348ac]
>>>> [saem9:10337] [ 6] mpirun(orte_daemon_recv+0x201) [0x804a3b1]
>>>> [saem9:10337] *** End of error message ***
>>>> Segmentation fault
>>>
>>>
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>
>
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