On Apr 28, 2014, at 13:39 , Nathan Hjelm <hje...@lanl.gov> wrote: > This part of the heterogeneous support being broken was my fault. I > fixed it in r31535. I will try to spend some time over the next month or > so fixing heterogeneous support in the one-sided code. Right now the > packed datatype representation will not work if sizeof (int) is not > consistent.
We are consistently using length-aware types (uint32_t) which have the same length. However, I would guess that RMA has the same issue as the datatype H functions (where the remote displacement cannot be correctly computed because we only know the local byte-level displacement). > Not sure if we ever claimed to support this case though. If there is need for conversion, I guess one will have to switch back to the pt2pt mode … mode we don’t have anymore. George. > > -Nathan > > On Mon, Apr 28, 2014 at 09:26:36AM -0700, Ralph Castain wrote: >> I'm afraid I honestly don't remember the last time I tested with >> enable-hetero - at least 2-3 weeks ago. I'd suggest starting ~6 months ago >> and see if that still worked. >> On Apr 28, 2014, at 7:04 AM, George Bosilca <bosi...@icl.utk.edu> wrote: >> >> When did you tested last? I have no idea what is broken so it is >> difficult to assess the complexity of the fix. Let's try to find the >> last working "version" and then run a dihcotomic test to find the >> culprit (with s hopefully). >> George. >> On Apr 28, 2014, at 09:05 , Ralph Castain <r...@open-mpi.org> wrote: >> >> No, it looks like something has broken it since I last tested. Sorry >> about the confusion. >> On Apr 27, 2014, at 10:55 PM, Gilles Gouaillardet >> <gilles.gouaillar...@iferc.org> wrote: >> >> I might have misunderstood Jeff's comment : >> >> The broken part(s) is(are) likely somewhere in the datatype and/or PML code >> (my guess). Keep in mind that my only testing of this feature is in >> *homogeneous* mode -- i.e., I compile with --enable-heterogeneous and then >> run tests on homogeneous machines. Meaning: it's not only broken for actual >> heterogeneity, it's also broken in the "unity"/homogeneous case. >> >> Unfortunatly, a trivial send/recv can hang in this case >> (--enable-heterogeneous and homogenous cluster of little endian >> procs). >> >> i opened #4568 https://svn.open-mpi.org/trac/ompi/ticket/4568 in >> order to track this issue >> (uninitialized data can cause a hang with this config) >> >> trunk is affected, v1.8 is very likely affected too >> >> Gilles >> >> On 2014/04/28 12:22, Ralph Castain wrote: >> >> I think you misunderstood his comment. It works fine on a homogeneous >> cluster, even with --enable-hetero. I've run it that way on my cluster. >> >> On Apr 27, 2014, at 7:50 PM, Gilles Gouaillardet >> <gilles.gouaillar...@iferc.org> wrote: >> >> >> According to Jeff's comment, OpenMPI compiled with >> --enable-heterogeneous is broken even in an homogeneous cluster. >> >> as a first step, MTT could be ran with OpenMPI compiled with >> --enable-heterogenous and running on an homogeneous cluster >> (ideally on both little and big endian) in order to identify and fix the >> bug/regression. >> /* this build is currently disabled in the MTT config of the >> cisco-community cluster */ >> >> Gilles >> >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel >> Link to this post: >> http://www.open-mpi.org/community/lists/devel/2014/04/14624.php >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel >> Link to this post: >> http://www.open-mpi.org/community/lists/devel/2014/04/14625.php >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel >> Link to this post: >> http://www.open-mpi.org/community/lists/devel/2014/04/14626.php > >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel >> Link to this post: >> http://www.open-mpi.org/community/lists/devel/2014/04/14633.php > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/04/14635.php
