[OMPI users] No network interfaces were found for out-of-band communications.

[Greg Russell]

I have a single machine w 96 cores. It runs CentOS7 and is not connected to any network as it needs to isolated for security.


I attempted the standard install process and upon attempting to run ./mpirun I find the error message


"No network interfaces were found for out-of-band communications. We require at least one available network for out-of-band messaging."


I'm a rookie with openMPI so I'm guessing maybe some configuration flags might fix the whole problem? Any ideas are very much appreciated.


Thank you,

Russell

[Ralph H Castain]

What OMPI version are we talking about here?


> On Sep 11, 2018, at 6:56 PM, Greg Russell <***@pcka.com> wrote:
>
> I have a single machine w 96 cores. It runs CentOS7 and is not connected to any network as it needs to isolated for security.
>
> I attempted the standard install process and upon attempting to run ./mpirun I find the error message
>
> "No network interfaces were found for out-of-band communications. We require at least one available network for out-of-band messaging."
>
> I'm a rookie with openMPI so I'm guessing maybe some configuration flags might fix the whole problem? Any ideas are very much appreciated.
>
> Thank you,
> Russell
> _______________________________________________
> users mailing list
> ***@lists.open-mpi.org <mailto:***@lists.open-mpi.org>
> https://lists.open-mpi.org/mailman/listinfo/users <https://lists.open-mpi.org/mailman/listinfo/users>

[Greg Russell]

OpenMPI-3.1.2

Sent from my iPhone

On Sep 12, 2018, at 10:50 AM, Ralph H Castain <***@open-mpi.org<mailto:***@open-mpi.org>> wrote:

What OMPI version are we talking about here?


On Sep 11, 2018, at 6:56 PM, Greg Russell <***@pcka.com<mailto:***@pcka.com>> wrote:

I have a single machine w 96 cores. It runs CentOS7 and is not connected to any network as it needs to isolated for security.

I attempted the standard install process and upon attempting to run ./mpirun I find the error message

"No network interfaces were found for out-of-band communications. We require at least one available network for out-of-band messaging."

I'm a rookie with openMPI so I'm guessing maybe some configuration flags might fix the whole problem? Any ideas are very much appreciated.

Thank you,
Russell

[Jeff Squyres (jsquyres) via users]

Can you send all the information listed here:

https://www.open-mpi.org/community/help/



> On Sep 12, 2018, at 11:03 AM, Greg Russell <***@pcka.com> wrote:
>
> OpenMPI-3.1.2
>
> Sent from my iPhone
>
> On Sep 12, 2018, at 10:50 AM, Ralph H Castain <***@open-mpi.org> wrote:
>
>> What OMPI version are we talking about here?
>>
>>
>>> On Sep 11, 2018, at 6:56 PM, Greg Russell <***@pcka.com> wrote:
>>>
>>> I have a single machine w 96 cores. It runs CentOS7 and is not connected to any network as it needs to isolated for security.
>>>
>>> I attempted the standard install process and upon attempting to run ./mpirun I find the error message
>>>
>>> "No network interfaces were found for out-of-band communications. We require at least one available network for out-of-band messaging."
>>>
>>> I'm a rookie with openMPI so I'm guessing maybe some configuration flags might fix the whole problem? Any ideas are very much appreciated.
>>>
>>> Thank you,
>>> Russell
>>> _______________________________________________
>>> users mailing list
>>> ***@lists.open-mpi.org
>>> https://lists.open-mpi.org/mailman/listinfo/users
>>
>> _______________________________________________
>> users mailing list
>> ***@lists.open-mpi.org
>> https://lists.open-mpi.org/mailman/listinfo/users
> _______________________________________________
> users mailing list
> ***@lists.open-mpi.org
> https://lists.open-mpi.org/mailman/listinfo/users


--
Jeff Squyres
***@cisco.com

[Ralph H Castain]

Just looking at the code, we do require that at least the loopback device be available. So you need to “activate” the Ethernet support, but you can restrict it to only loopback, which should meet your security requirement.


> On Sep 12, 2018, at 8:10 AM, Jeff Squyres (jsquyres) via users <***@lists.open-mpi.org> wrote:
>
> Can you send all the information listed here:
>
> https://www.open-mpi.org/community/help/
>
>
>
>> On Sep 12, 2018, at 11:03 AM, Greg Russell <***@pcka.com> wrote:
>>
>> OpenMPI-3.1.2
>>
>> Sent from my iPhone
>>
>> On Sep 12, 2018, at 10:50 AM, Ralph H Castain <***@open-mpi.org> wrote:
>>
>>> What OMPI version are we talking about here?
>>>
>>>
>>>> On Sep 11, 2018, at 6:56 PM, Greg Russell <***@pcka.com> wrote:
>>>>
>>>> I have a single machine w 96 cores. It runs CentOS7 and is not connected to any network as it needs to isolated for security.
>>>>
>>>> I attempted the standard install process and upon attempting to run ./mpirun I find the error message
>>>>
>>>> "No network interfaces were found for out-of-band communications. We require at least one available network for out-of-band messaging."
>>>>
>>>> I'm a rookie with openMPI so I'm guessing maybe some configuration flags might fix the whole problem? Any ideas are very much appreciated.
>>>>
>>>> Thank you,
>>>> Russell
>>>> _______________________________________________
>>>> users mailing list
>>>> ***@lists.open-mpi.org
>>>> https://lists.open-mpi.org/mailman/listinfo/users
>>>
>>> _______________________________________________
>>> users mailing list
>>> ***@lists.open-mpi.org
>>> https://lists.open-mpi.org/mailman/listinfo/users
>> _______________________________________________
>> users mailing list
>> ***@lists.open-mpi.org
>> https://lists.open-mpi.org/mailman/listinfo/users
>
>
> --
> Jeff Squyres
> ***@cisco.com
>
> _______________________________________________
> users mailing list
> ***@lists.open-mpi.org
> https://lists.open-mpi.org/mailman/listinfo/users