[lustre-discuss] Lustre poor performance

Riccardo Veraldi Riccardo.Veraldi at cnaf.infn.it
Mon Aug 28 12:40:53 PDT 2017


On 8/23/17 7:39 AM, Mohr Jr, Richard Frank (Rick Mohr) wrote:
>> On Aug 22, 2017, at 7:14 PM, Riccardo Veraldi <Riccardo.Veraldi at cnaf.infn.it> wrote:
>>
>> On 8/22/17 9:22 AM, Mannthey, Keith wrote:
>>> Younot expected.
>>>
>> yes they are automatically used on my Mellanox and the script ko2iblnd-probe seems like not working properly.
> The ko2iblnd-probe script looks in /sys/class/infiniband for device names starting with “hfi” or “qib”.  If it detects those, it decides that the “profile” it should use is “opa” so then it basically invokes the ko2iblnd-opa modprobe line.  But the script has no logic to detect other types of card (i.e. - mellanox), so in those cases, no ko2iblnd options are used and you end up with the default module parameters being used.
>
> If you want to use the script, you will need to modify ko2iblnd-probe to add a new case for your brand of HCA and then add an appropriate ko2iblnd-<profile> line to ko2iblnd.conf.
>
> Or just do what I did and comment out all the lines in ko2iblnd.conf and add your own lines.
yes what I did was to disable the module alias and just

options ko2iblnd ...
install ko2iblnd ...

and it worked.
I may modify the script as well as you mentioned.

thank you.
>
> --
> Rick Mohr
> Senior HPC System Administrator
> National Institute for Computational Sciences
> http://www.nics.tennessee.edu
>
>



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