Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

Subject: Re: [OMPI devel] RFC: Move the Open MPI communication infrastructure in OPAL
From: Ralph Castain (rhc_at_[hidden])
Date: 2014-07-23 21:57:53


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) <jsquyres_at_[hidden]> 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 <bosilca_at_[hidden]> 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 <howardp_at_[hidden]> wrote:
>> Hi Folks,
>>
>> Now work is planned for the uGNI BTL at this time either.
>>
>> Howard
>>
>>
>> -----Original Message-----
>> From: devel [mailto:devel-bounces_at_[hidden]] 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 <rhc_at_[hidden]> wrote:
>>
>>> George: any update on when this will happen?
>>>
>>>
>>> On Jun 4, 2014, at 9:14 PM, George Bosilca <bosilca_at_[hidden]> 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.
>>>> _______________________________________________
>>>> devel mailing list
>>>> devel_at_[hidden]
>>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>>> Link to this post:
>>>> http://www.open-mpi.org/community/lists/devel/2014/06/14974.php
>>>
>>> _______________________________________________
>>> devel mailing list
>>> devel_at_[hidden]
>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>> Link to this post:
>>> http://www.open-mpi.org/community/lists/devel/2014/07/15100.php
>>
>>
>> --
>> Jeff Squyres
>> jsquyres_at_[hidden]
>> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>>
>> _______________________________________________
>> devel mailing list
>> devel_at_[hidden]
>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
>> Link to this post: http://www.open-mpi.org/community/lists/devel/2014/07/15104.php
>> _______________________________________________
>> devel mailing list
>> devel_at_[hidden]
>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
>> Link to this post: http://www.open-mpi.org/community/lists/devel/2014/07/15111.php
>>
>> _______________________________________________
>> devel mailing list
>> devel_at_[hidden]
>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
>> Link to this post: http://www.open-mpi.org/community/lists/devel/2014/07/15142.php
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>
> _______________________________________________
> devel mailing list
> devel_at_[hidden]
> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
> Link to this post: http://www.open-mpi.org/community/lists/devel/2014/07/15225.php