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Subject: Re: [OMPI users] Question on ssh search path
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-10-18 16:35:35


Take a look in orte/mca/plm/rsh/plm_rsh_component.c, the orte_plm_rsh_search function

On Oct 17, 2012, at 9:50 PM, marco atzeri <marco.atzeri_at_[hidden]> wrote:

> On 10/18/2012 2:45 AM, Ralph Castain wrote:
>>
>
>>
>>>
>>>>>
>>>>> trying to debug I notice a strange pattern on ssh search:
>>>>> 1) ssh is only searched on the PATH directories that end with "bin"
>>>>> other directories are skipped.
>>>>> 2) //usr/bin/ssh is not on the PATH but is searched.
>>>>> Why and where is defined in the code ?
>>>
>>> any idea from where this //usr/bin/ssh is coming for ?
>>
>> /usr/bin is one of the default posix locations for system binaries, so I would expect it is in your path.
>
> /usr/bin yes
> but
> //usr/bin no.
>
> on cygwin "//" is always a network path and "//usr/bin" does not exist.
>>
>>
>>>
>>>>>
>>>>> 103 321183 [main] orterun 6304 normalize_posix_path: src /home/marco/bin/ssh
>>>>> 100 324353 [main] orterun 6304 normalize_posix_path: src /usr/local/bin/ssh
>>>>> 99 327381 [main] orterun 6304 normalize_posix_path: src /usr/bin/ssh
>>>>> 36 1805679 [main] orterun 6304 normalize_posix_path: src /home/marco/bin/ssh
>>>>> 34 1807010 [main] orterun 6304 normalize_posix_path: src /usr/local/bin/ssh
>>>>> 34 1808236 [main] orterun 6304 normalize_posix_path: src /usr/bin/ssh
>
> my path is much longer but only the bin directory are searched
>
>>>>> 37 1810858 [main] orterun 6304 normalize_posix_path: src //usr/bin/ssh
>
> this is the anomaly
>
>>>>>
>>>>> as immediately after the "//" search mpirun crashes
>>>>>
>>>>> 703 9508968 [WNetOpenEnum] orterun 8020 cygthread::stub: thread 'WNetOpenEnum', id 0x15A0, stack_ptr 0x28BAD40
>>>>> --- Process 8020, exception 000006AB at 776BB9BC
>>>>> 41286 9550254 [main] orterun 8020 fs_info::update: Cannot get volume attributes (\??\UNC), C0000010
>>>>>
>>>>> I suspect this search is the culprit.
>>>>>
>>>>> If someone is interested I put here
>>>>> http://matzeri.altervista.org/works/ompi/
>>>>>
>>>>> all the config, check and make logs plus the ompi_info output.
>>>>>
>>>>> Regards
>>>>> Marco
>>>
>
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