[Mpi-forum] Notes on discussions about 3.0 / 3.1?

[Jeff Squyres]

This probably revives the "MPI-next" discussion.  I think we hadn't figured out what the "next" version of MPI would be, and punted the conversation down the road so that we could concentrate on 3.0.

FWIW, I see at least a few different directions of discussion:

- what types of things are going into the next MPI release: bug fixes, new features, or both?
- whether to keep the same convention that we did in MPI 2.x (i.e., only bug fixes into 3.x)
  - sub topic: should we do MPI 3.1 (for bugs) and MPI 4.0 (for new things)?
    --> this would be a lot of effort for 4 meetings/year, but it's worth discussing and making a concrete decision
- what to call the next release


On May 31, 2012, at 6:02 PM, Jeff Hammond wrote:

> Perhaps since MPI 3.0 got everything right that it attempted to do :-)
> then we can skip 3.1 and move onto to 4.0, the most nonblocking-est,
> fault-tolerantest MPI ever!
> 
> Jeff
> 
> On Thu, May 31, 2012 at 4:59 PM, Jeff Squyres <jsquyres at cisco.com> wrote:
>> On May 31, 2012, at 4:58 PM, Jeff Hammond wrote:
>> 
>>> It would be useful to know what is not possible for 3.1.  For example,
>>> I've been told that NBC could not have been done as MPI 2.3 because
>>> they were a major change and that can't happen on minor version
>>> releases.  Does that mean anything drastically new in form (e.g.
>>> active messages not derived from MPI_Accumulate) are off the table and
>>> have to wait for 4.0?
>> 
>> FWIW, the same question occurred to me, especially with references earlier today that FT and/or iFile could come back in MPI 3.1 (i.e., we explicitly did not allow new things in MPI 2.2.x).
>> 
>>> Jeff
>>> 
>>> On Thu, May 31, 2012 at 3:48 PM, Richard Graham <richardg at mellanox.com> wrote:
>>>> Comments in line
>>>> 
>>>> -----Original Message-----
>>>> From: mpi-forum-bounces at lists.mpi-forum.org [mailto:mpi-forum-bounces at lists.mpi-forum.org] On Behalf Of Jeff Squyres
>>>> Sent: Friday, June 01, 2012 4:21 AM
>>>> To: MPI Forum list
>>>> Subject: [Mpi-forum] Notes on discussions about 3.0 / 3.1?
>>>> 
>>>> Did anyone take any notes on the following two agenda items from the meeting this past week:
>>>> 
>>>> - MPI 3.1 - initial plans
>>>> [rich] Not much discussion at this stage.  The one thing I do remember is that we started to discuss voting, given that we are moving to a format of meeting once a quarter.  One of the things suggested was that we have a day in  between meetings for voting, doing this over the phone, but with attendance at the regular meetings continuing to determine voting elegibility.
>>>> 
>>>> - MPI 3.0 - Draft standard
>>>> [rich] (1)  Push to get all the voted in tickets into the draft standard by JUNE 15th.  This requires ticket owners and chapter committees to work together.  Chapter authors that don't participate would be replaced by others that will help get the revised text into the draft standard. (2) The July Chicago meeting will be devoted solely for getting the draft standard into final form.  Last second votes will take place on Monday, with the rest of the time dedicated to chapter committee work.  (3) The draft standard will be posted for public comment after the meeting, giving people time to comment before the final votes in Vienna.
>>>> 
>>>> Rich
>>>> 
>>>> 
>>>> I wasn't at the meeting, but would love to hear what the general discussion was around these two topics.
>>>> 
>>>> Thanks.
>>>> 
>>>> --
>>>> Jeff Squyres
>>>> jsquyres at cisco.com
>>>> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>>>> 
>>>> 
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>>> 
>>> 
>>> 
>>> --
>>> Jeff Hammond
>>> Argonne Leadership Computing Facility
>>> University of Chicago Computation Institute
>>> jhammond at alcf.anl.gov / (630) 252-5381
>>> http://www.linkedin.com/in/jeffhammond
>>> https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond
>>> 
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>> 
>> 
>> --
>> Jeff Squyres
>> jsquyres at cisco.com
>> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>> 
>> 
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> 
> 
> 
> -- 
> Jeff Hammond
> Argonne Leadership Computing Facility
> University of Chicago Computation Institute
> jhammond at alcf.anl.gov / (630) 252-5381
> http://www.linkedin.com/in/jeffhammond
> https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond
> 
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-- 
Jeff Squyres
jsquyres at cisco.com
For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/