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Subject: Re: [OMPI devel] Scheduled merge of ORTE devel branch to trunk
From: Ralph H Castain (rhc_at_[hidden])
Date: 2008-02-14 10:37:36

Update on this plan...

I am going to delay merging the branch over to the trunk for awhile, perhaps
several weeks, for several reasons:

1. the trunk is somewhat unstable at the moment. Things are going in and
being backed out, errors in recent commits being found and corrected, etc.
at a pace I simply cannot track during a merge

2. I am still waiting for Galen's commit of the CNL code

3. we are about to hit a long weekend, and I need to get moving again on

I had no major conflicts when sync'ing the branch with the trunk, so I don't
think the eventual merge will be a problem. For now, though, perhaps it is
better to let the trunk settle down a little before introducing another
major perturbation.

We can revisit this during Tues telecon and see where we go from here.


On 2/12/08 7:16 PM, "Ralph Castain" <rhc_at_[hidden]> wrote:

> laid plans of mice and men, as they say.
> We were just having -way- too much fun here at IBM today going over the new
> ORTE design, planning for future scalability changes, etc., so American
> decided to cancel my flight back home! So thoughtful!
> I will be spending my Wed (hopefully!) enroute back home. It looks like it
> will be Thurs before I can do the merge. My apologies to all - but I would
> really rather not try to do it from a notebook computer in an airline
> terminal!
> Ralph
> On 2/12/08 9:54 AM, "Jeff Squyres" <jsquyres_at_[hidden]> wrote:
>> Ralph --
>> We talked about this on the OMPI con call today and everyone agrees
>> that this seems to be a good plan. Just as a safety net: if the merge
>> goes disastrously wrong and you're unavailable Thu/Fri this week, we
>> can just back it out and try again later.
>> Thanks!
>> On Feb 11, 2008, at 11:37 PM, Ralph Castain wrote:
>>> Hello all
>>> Per last week's telecon, we planned the merge of the latest ORTE devel
>>> branch to the OMPI trunk for after Sun had committed its C++
>>> changes. That
>>> happened over the weekend.
>>> Therefore, based on the requests at the telecon, I will be merging the
>>> current ORTE devel branch to the trunk on Wed 2/13. I'll make the
>>> commit
>>> around 4:30pm Eastern time - will send out warning shortly before
>>> the commit
>>> to let you know it is coming. I'll advise of any delays.
>>> This will be a snapshot of that devel branch - it will include the
>>> upgraded
>>> launch system, remove the GPR, add the new tool communication
>>> library, allow
>>> arbitrary mpiruns to interconnect, supports the revamped hostfile and
>>> dash-host behaviors per the wiki, etc.
>>> However, it is incomplete and contains some known flaws. For example,
>>> totalview support has not been enabled yet. Comm_spawn, which is
>>> currently
>>> broken on the OMPI trunk, is fixed - but singleton comm_spawn remains
>>> broken. I am in the process of establishing support for direct and
>>> standalone launch capabilities, but those won't be in the merge. I
>>> have
>>> updated all of the launchers, but can only certify the SLURM, TM,
>>> and RSH
>>> ones to work - the Xgrid launcher is known to not compile, so if you
>>> have
>>> Xgrid on your Mac, you need to tell the build system to not build that
>>> component.
>>> This will give you a chance to look over the new arch, though, and I
>>> understand that people would like to begin having a chance to test and
>>> review the revised code. Hopefully, you will find most of the bugs
>>> to be
>>> minor.
>>> Please advise of any concerns about this merge. The schedule is
>>> totally
>>> driven by the requests of the MPI team members (delaying the merge
>>> has no
>>> impact on ORTE development), so requests to shift the schedule
>>> should be
>>> discussed amongst the community.
>>> Thanks
>>> Ralph
>>> _______________________________________________
>>> devel mailing list
>>> devel_at_[hidden]
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