[knem-devel] Can't modprobe KNEM

Brice Goglin Brice.Goglin at inria.fr
Fri Jan 20 20:23:58 CET 2017


It's compatible between all "recent" versions, no problem.

Brice




Le 20/01/2017 14:04, Juan A. Cordero Varelaq a écrit :
>
> Hi,
>
> There are no sources available, unfortunately, so I'm afraid I can't
> rebuild the MOFED knem module.
>
> Won't there be any incompatibility issue if I have two KNEM versions,
> one from MOFED and the original from KNEM?
>
>
> Thanks
>
> Cheers
> On 20/01/17 13:59, Brice Goglin wrote:
>> Hello
>>
>> Looks like your knem module was not properly built for that kernel.
>> If it comes from MOFED, you should report the issue to Mellanox.
>>
>> You may try to ask dkms to rebuild the MOFED knem module (assuming
>> the sources are still available on your system). I don't remember how
>> to do that.
>>
>> In the meantime, you may rebuild your own knem by downloading the
>> tarball from http://knem.gforge.inria.fr/download/ and following the
>> doc at http://knem.gforge.inria.fr/doc/
>>
>> Brice
>>
>>
>>
>> Le 20/01/2017 13:45, Juan A. Cordero Varelaq a écrit :
>>> Hi,
>>>
>>> I have inherited an SGE cluster with Mellanox OFED software installed:
>>>
>>>   *  /opt/knem-1.1.90mlnx2
>>>   * /opt/mellanox/mxm
>>>   * /opt/mellanox/fca
>>>
>>> After having installed OpenMPI-2.0.1 I've got lots of warnings
>>> related to KNEM. Then, from the OMPI mailing list, I've been told  I
>>> should first load the knem module, since /dev/knem does not exist
>>> yet. However, when I runmodprobe knem (with root user), I get the
>>> following:
>>>
>>>     FATAL: Error inserting knem
>>>     (/lib/modules/3.13.0-37-generic/updates/dkms/knem.ko): Invalid
>>>     module format
>>>
>>> After reading the knem documentation, I've tried:
>>>
>>>     /opt/knem-1.1.90mlnx2/sbin/knem_local_install
>>>
>>> and got:
>>>
>>>     Installing module...
>>>       Installing module /lib/modules/3.13.0-37-generic/extra//knem.ko...
>>>     cp: cannot stat
>>>     `/opt/knem-1.1.90mlnx2/lib/modules/3.13.0-37-generic/knem.ko':
>>>     No such file or directory
>>>
>>> I would appreciate a lot any hint on this issue.
>>>
>>> Thanks a lot in advance
>>>
>>>
>>>
>>> _______________________________________________
>>> knem-devel mailing list
>>> knem-devel at lists.gforge.inria.fr
>>> http://lists.gforge.inria.fr/mailman/listinfo/knem-devel
>>
>

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