On Tue, 31 Aug 2010 02:27:29 -0700 Yevgeny Kliteynik <klit...@gmail.com> wrote:
> Hi all, > > In order to support RoCEE, a while ago I've added > a new field to umad, thus introduced an ABI change. > > There already was a discussion on the linux-rdma list, > but due to the proximity of the upcoming OFED 1.5.2 > release these concerns were raised again. > > So my question is, other that *general* concerns about > changing ABI, is anybody aware of the *actual* problem > that will be caused by this? Any customer/3rd party > solution that would be affected by this? Because our MVAPICH depends on umad, libibumad.so.1 to be exact.[*] These ABI changes (to v2 and v3) would have forced our users to recompile their codes. We are maintaining the old ABI here until our next major release of CHAOS[#] to prevent this. I think the thing to remember is that many people are using Open Fabrics software, but are _not_ using "OFED". What is tested with OFED is not the only thing which might be using these libraries. Our version of MVAPICH is a good example. I am certainly not the expert in this area and I know that many people have tried to make this point in the past, but I will say it here again. Each of these Open Fabrics packages _must_ be maintained to stand on their own. Roland did this a long time ago with ibverbs. I think now is a good time to start discussing breaking up the "management" git tree so that these libraries can live on their own. I will write a separate email regarding this. Ira [*] We are looking into removing the dependency. [#] Shameless plug: http://code.google.com/p/chaos-release/wiki/CHAOS_Description > > -- Yevgeny > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://*vger.kernel.org/majordomo-info.html > -- Ira Weiny Math Programmer/Computer Scientist Lawrence Livermore National Lab 925-423-8008 wei...@llnl.gov -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
