Sounds reasonable. However, keep in mind that some BTLs actually require the 
notion of a jobid and rank-within-that-job. If the current ones don't, I assure 
you that at least one off-trunk one definitely does

Some of the MTL's, of course, definitely rely on those fields.


On Jul 23, 2014, at 7:15 PM, George Bosilca <bosi...@icl.utk.edu> wrote:

> I was struggling with a similar issue while trying to fix the OpenIB 
> compilation. And I choose to implement a different approach, which does not 
> require knowledge of what’s inside opal_process_name_t.
> 
> Look in opal/util/proc.h. You should be able to use: opal_process_name_vpid 
> and opal_process_name_jobid. They will remain there until we figure out a 
> nice way to get rid of them completely.
> 
> HINT: I personally prefer to get rid of void and jobid completely. As long as 
> need the info only for a visual clue, the output of OPAL_NAME_PRINT might be 
> enough.
> 
>  George.
> 
> On Jul 23, 2014, at 22:11 , Jeff Squyres (jsquyres) <jsquy...@cisco.com> 
> wrote:
> 
>> Ralph and I chatted in IM.
>> 
>> For the moment, I'm masking off the lower 32 bits to get the VPID, the 
>> uppermost 16 as the job family, and the next 16 as the sub-family.
>> 
>> If George makes the name be a handle with accessors to get the parts, we can 
>> switch to using that.
>> 
>> 
>> 
>> On Jul 23, 2014, at 9:57 PM, Ralph Castain <r...@open-mpi.org> wrote:
>> 
>>> You should be able to memcpy it to an ompi_process_name_t and then extract 
>>> it as usual
>>> 
>>> 
>>> On Jul 23, 2014, at 6:51 PM, Jeff Squyres (jsquyres) <jsquy...@cisco.com> 
>>> wrote:
>>> 
>>>> George --
>>>> 
>>>> Is there a way to get the MPI_COMM_WORLD rank of an opal_process_name_t?
>>>> 
>>>> I am currently outputting some information about peer processes in the 
>>>> usnic BTL to include the peer's VPID, which is the MCW rank.  I'll be sad 
>>>> if that goes away...
>>>> 
>>>> 
>>>> On Jul 15, 2014, at 2:06 AM, George Bosilca <bosi...@icl.utk.edu> wrote:
>>>> 
>>>>> Ralph,
>>>>> 
>>>>> There are two reasons that prevent me from pushing this RFC forward.
>>>>> 
>>>>> 1. Minor: The code has some minor issues related to the last set of 
>>>>> BTL/PML changes, and I didn't found the time to fix them.
>>>>> 
>>>>> 2. Major: Not all BTLs have been updated and validated. What we need at 
>>>>> this point from their respective developers is a little help with the 
>>>>> validation process. We need to validate that the new code works as 
>>>>> expected and passes all tests.
>>>>> 
>>>>> The move will be ready to go as soon as all BTL developers raise the 
>>>>> green flag. I got it from Jeff (but the last USNIC commit broke 
>>>>> something), and myself. In other words, TCP, self, SM and USNIC are good 
>>>>> to go. For the others, as I didn't heard back from their 
>>>>> developers/maintainers, I assume they are not yet ready. Here I am 
>>>>> referring to OpenIB, Portals4, Scif, smcuda, ugni, usnic and vader.
>>>>> 
>>>>> George.
>>>>> 
>>>>> PS: As a reminder the code is available at 
>>>>> https://bitbucket.org/bosilca/ompi-btl
>>>>> 
>>>>> 
>>>>> 
>>>>> On Fri, Jul 11, 2014 at 3:17 PM, Pritchard, Howard P <howa...@lanl.gov> 
>>>>> wrote:
>>>>> Hi Folks,
>>>>> 
>>>>> Now work is planned for the uGNI BTL at this time either.
>>>>> 
>>>>> Howard
>>>>> 
>>>>> 
>>>>> -----Original Message-----
>>>>> From: devel [mailto:devel-boun...@open-mpi.org] On Behalf Of Jeff Squyres 
>>>>> (jsquyres)
>>>>> Sent: Thursday, July 10, 2014 5:04 PM
>>>>> To: Open MPI Developers List
>>>>> Subject: Re: [OMPI devel] RFC: Move the Open MPI communication 
>>>>> infrastructure in OPAL
>>>>> 
>>>>> FWIW: I can't speak for other BTL maintainers, but I'm out of the office 
>>>>> for the next week, and the usnic BTL will be standing still during that 
>>>>> time.  Once I return, I will be making additional changes in the usnic 
>>>>> BTL (new features, updates, ...etc.).
>>>>> 
>>>>> So if you have the cycles, doing it in the next week or so would be good 
>>>>> because at least there will be no conflicts with usnic BTL concurrent 
>>>>> development.  :-)
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> On Jul 10, 2014, at 2:56 PM, Ralph Castain <r...@open-mpi.org> wrote:
>>>>> 
>>>>>> George: any update on when this will happen?
>>>>>> 
>>>>>> 
>>>>>> On Jun 4, 2014, at 9:14 PM, George Bosilca <bosi...@icl.utk.edu> wrote:
>>>>>> 
>>>>>>> WHAT:    Open our low-level communication infrastructure by moving all
>>>>>>> necessary components
>>>>>>>          (btl/rcache/allocator/mpool) down in OPAL
>>>>>>> 
>>>>>>> WHY: All the components required for inter-process communications are
>>>>>>> currently deeply integrated in the OMPI
>>>>>>>         layer. Several groups/institutions have express interest
>>>>>>> in having a more generic communication
>>>>>>>         infrastructure, without all the OMPI layer dependencies.
>>>>>>> This communication layer should be made
>>>>>>>         available at a different software level, available to all
>>>>>>> layers in the Open MPI software stack. As an
>>>>>>>         example, our ORTE layer could replace the current OOB and
>>>>>>> instead use the BTL directly, gaining
>>>>>>>         access to more reactive network interfaces than TCP.
>>>>>>> Similarly, external software libraries could take
>>>>>>>         advantage of our highly optimized AM (active message)
>>>>>>> communication layer for their own purpose.
>>>>>>> 
>>>>>>>         UTK with support from Sandia, developped a version of
>>>>>>> Open MPI where the entire communication
>>>>>>>         infrastucture has been moved down to OPAL
>>>>>>> (btl/rcache/allocator/mpool). Most of the moved
>>>>>>>         components have been updated to match the new schema,
>>>>>>> with few exceptions (mainly BTLs
>>>>>>>         where I have no way of compiling/testing them). Thus, the
>>>>>>> completion of this RFC is tied to
>>>>>>>         being able to completing this move for all BTLs. For this
>>>>>>> we need help from the rest of the Open MPI
>>>>>>>         community, especially those supporting some of the BTLs.
>>>>>>> A non-exhaustive list of BTLs that
>>>>>>>         qualify here is: mx, portals4, scif, udapl, ugni, usnic.
>>>>>>> 
>>>>>>> WHERE:  bitbucket.org/bosilca/ompi-btl (updated today with respect to
>>>>>>> trunk r31952)
>>>>>>> 
>>>>>>> TIMEOUT: After all the BTLs have been amended to match the new
>>>>>>> location and usage. We will discuss
>>>>>>>         the last bits regarding this RFC at the Open MPI
>>>>>>> developers meeting in Chicago, June 24-26. The
>>>>>>>         RFC will become final only after the meeting.
>>>>>>> _______________________________________________
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>>>>>> 
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>>>>> 
>>>>> 
>>>>> --
>>>>> Jeff Squyres
>>>>> jsquy...@cisco.com
>>>>> For corporate legal information go to: 
>>>>> http://www.cisco.com/web/about/doing_business/legal/cri/
>>>>> 
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>>>> 
>>>> 
>>>> -- 
>>>> Jeff Squyres
>>>> jsquy...@cisco.com
>>>> For corporate legal information go to: 
>>>> http://www.cisco.com/web/about/doing_business/legal/cri/
>>>> 
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>>> 
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>> 
>> 
>> -- 
>> Jeff Squyres
>> jsquy...@cisco.com
>> For corporate legal information go to: 
>> http://www.cisco.com/web/about/doing_business/legal/cri/
>> 
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> 
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