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 >>
