Let's iterate over this in a wiki page -- seems easier than iterating over email:
https://github.com/open-mpi/ompi/wiki/User-Migration-Guide%3A-1.8.x-and-v1.10.x-to-v2.0.0 (I put a link to this on the main OMPI wiki page too, but currently have it labeled as DRAFT, just to make it clear that this is not definitive [yet]) > On Apr 29, 2016, at 2:03 PM, Jeff Squyres (jsquyres) <jsquy...@cisco.com> > wrote: > > On Apr 29, 2016, at 2:00 PM, Ralph Castain <r...@open-mpi.org> wrote: >> >> Didn’t OSHMEM up-level its API? > > Yeah, actually, we don't have much in NEWS about OSHMEM -- Mellanox: what > should be in there? > >> I believe we also have some early support in there for DVM and Singularity, >> but not the full-blown capability that is in master. Unsure if we want to >> advertise that for 2.0, maybe wait for the updates in 2.1? > > Up to you. Do you have enough support in 2.0.0 that you want to say > something about it in NEWS / this migration guide? > >> >>> On Apr 29, 2016, at 10:55 AM, Jeff Squyres (jsquyres) <jsquy...@cisco.com> >>> wrote: >>> >>> I'm thinking something like a simple "User's migration guide: 1.8.x/1.10.x >>> --> 2.0.0" >>> >>> Here's big topics I see so far: >>> >>> User-Noticeable changes >>> (i.e., things that may prevent users from simply re-compiling / >>> re-mpirun'ing their existing MPI app) >>> ----------------------- >>> - mpirun -np behavior >>> - OMPIO is now the default (not ROMIO) >>> - ...more? >>> >>> New features >>> ------------ >>> - Launch scalability improvements (i.e., support for PMIx) >>> - Lots of improvements to MPI RMA >>> - Improved support for MPI_THREAD_MULTIPLE >>> - ompi_info pretty print improvements >>> - UCX support >>> - PLFS support (via OMPIO) >>> - Better Cray build / SLURM support >>> - ...more? >>> >>> Removed support >>> --------------- >>> - OS X Leopard >>> - Cray XT >>> - VampirTrace >>> - Myrinet MX / OpenMX >>> - coll:ml module >>> - Alpha processors >>> - --enable-mpi-profiling option >>> - Checkpoint / restart >>> - ...more? >>> >>> >>>> On Apr 29, 2016, at 1:21 PM, Howard Pritchard <hpprit...@gmail.com> wrote: >>>> >>>> Hi Jeff, >>>> >>>> checkpoint/restart is not supported in this release. >>>> >>>> Does this release work with totalview? I recall we had some problems, >>>> and do not remember if they were resolved. >>>> >>>> We may also want to clarify if any PML/MTLs are experimental in this >>>> release. >>>> >>>> MPI_THREAD_MULTIPLE support. >>>> >>>> >>>> Howard >>>> >>>> >>>> 2016-04-29 10:34 GMT-06:00 Cabral, Matias A <matias.a.cab...@intel.com>: >>>> How about for “developers that have not been following the transition from >>>> 1.x to 2.0? Particularly myself J. I started contributing to some >>>> specific parts (psm2 mtl) and following changes. However, I don’t have >>>> details of what is changing in 2.0. I see there could be different level >>>> of details in the “developer’s transition guide book”, ranging from >>>> architectural change to what pieces were moved where. >>>> >>>> >>>> >>>> Thanks, >>>> >>>> >>>> >>>> _MAC >>>> >>>> >>>> >>>> From: devel [mailto:devel-boun...@open-mpi.org] On Behalf Of Joshua Ladd >>>> Sent: Friday, April 29, 2016 7:11 AM >>>> To: Open MPI Developers <de...@open-mpi.org> >>>> Subject: Re: [OMPI devel] 2.0.0 is coming: what do we need to communicate >>>> to users? >>>> >>>> >>>> >>>> Certainly we need to communicate / advertise / evangelize the improvements >>>> in job launch - the largest and most substantial change between the two >>>> branches - and provide some best practice guidelines for usage (use direct >>>> modex for applications with sparse communication patterns and full modex >>>> for dense.) I would be happy to contribute some paragraphs. >>>> >>>> >>>> >>>> Obviously, we also need to communicate, reiterate the need to recompile >>>> codes built against the 1.10 series. >>>> >>>> >>>> >>>> Best, >>>> >>>> >>>> >>>> Josh >>>> >>>> >>>> >>>> >>>> >>>> On Thursday, April 28, 2016, Jeff Squyres (jsquyres) <jsquy...@cisco.com> >>>> wrote: >>>> >>>> We're getting darn close to v2.0.0. >>>> >>>> What "gotchas" do we need to communicate to users? I.e., what will people >>>> upgrading from v1.8.x/v1.10.x be surprised by? >>>> >>>> The most obvious one I can think of is mpirun requiring -np when slots are >>>> not specified somehow. >>>> >>>> What else do we need to communicate? It would be nice to avoid the >>>> confusion users experienced regarding affinity functionality/options when >>>> upgrading from v1.6 -> v1.8 (because we didn't communicate these changes >>>> well, IMHO). >>>> >>>> -- >>>> Jeff Squyres >>>> jsquy...@cisco.com >>>> For corporate legal information go to: >>>> http://www.cisco.com/web/about/doing_business/legal/cri/ >>>> >>>> _______________________________________________ >>>> devel mailing list >>>> de...@open-mpi.org >>>> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/devel/2016/04/18832.php >>>> >>>> >>>> _______________________________________________ >>>> devel mailing list >>>> de...@open-mpi.org >>>> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/devel/2016/04/18843.php >>>> >>>> _______________________________________________ >>>> devel mailing list >>>> de...@open-mpi.org >>>> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/devel/2016/04/18844.php >>> >>> >>> -- >>> Jeff Squyres >>> jsquy...@cisco.com >>> For corporate legal information go to: >>> http://www.cisco.com/web/about/doing_business/legal/cri/ >>> >>> _______________________________________________ >>> devel mailing list >>> de...@open-mpi.org >>> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel >>> Link to this post: >>> http://www.open-mpi.org/community/lists/devel/2016/04/18846.php >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel >> Link to this post: >> http://www.open-mpi.org/community/lists/devel/2016/04/18848.php > > > -- > Jeff Squyres > jsquy...@cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2016/04/18850.php -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
