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Subject: Re: [OMPI devel] "Open MPI"-based MPI library used by K computer
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2011-06-27 22:41:29


I echo what Ralph said -- congratulations!

Let us know when you'll be ready to contribute back what you can.

Thanks!

On Jun 27, 2011, at 9:58 PM, Takahiro Kawashima wrote:

> Dear Open MPI community,
>
> I'm a member of MPI library development team in Fujitsu. Shinji
> Sumimoto, whose name appears in Jeff's blog, is one of our bosses.
>
> As Rayson and Jeff noted, K computer, world's most powerful HPC system
> developed by RIKEN and Fujitsu, utilizes Open MPI as a base of its MPI
> library. We, Fujitsu, are pleased to announce that, and also have special
> thanks to Open MPI community.
> We are sorry to be late announce!
>
> Our MPI library is based on Open MPI 1.4 series, and has a new point-
> to-point component (BTL) and new topology-aware collective communication
> algorithms (COLL). Also, it is adapted to our runtime environment (ESS,
> PLM, GRPCOMM etc).
>
> K computer connects 68,544 nodes by our custom interconnect.
> Its runtime environment is our proprietary one. So we don't use orted.
> We cannot tell start-up time yet because of disclosure restriction, sorry.
>
> We are surprised by the extensibility of Open MPI, and have proved that
> Open MPI is scalable to 68,000 processes level! We feel pleasure to
> utilize such a great open-source software.
>
> We cannot tell detail of our technology yet because of our contract
> with RIKEN AICS, however, we will plan to feedback of our improvements
> and bug fixes. We can contribute some bug fixes soon, however, for
> contribution of our improvements will be next year with Open MPI
> agreement.
>
> Best regards,
>
> MPI development team,
> Fujitsu
>
>
>> I got more information:
>>
>> http://blogs.cisco.com/performance/open-mpi-powers-8-petaflops/
>>
>> Short version: yes, Open MPI is used on K and was used to power the 8PF runs.
>>
>> w00t!
>>
>>
>>
>> On Jun 24, 2011, at 7:16 PM, Jeff Squyres wrote:
>>
>>> w00t!
>>>
>>> OMPI powers 8 petaflops!
>>> (at least I'm guessing that -- does anyone know if that's true?)
>>>
>>>
>>> On Jun 24, 2011, at 7:03 PM, Rayson Ho wrote:
>>>
>>>> Interesting... page 11:
>>>>
>>>> http://www.fujitsu.com/downloads/TC/sc10/programming-on-k-computer.pdf
>>>>
>>>> Open MPI based:
>>>>
>>>> * Open Standard, Open Source, Multi-Platform including PC Cluster.
>>>> * Adding extension to Open MPI for "Tofu" interconnect
>>>>
>>>> Rayson
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-- 
Jeff Squyres
jsquyres_at_[hidden]
For corporate legal information go to:
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