I just pushed a solution to this problem in 8d0baf140f. If we are unable to extract the expected information from the RTE, we simply build a non-reordered communicator and gracefully return.
That being said, not being able to correctly retrieve OPAL_PMIX_NODEID has the potential to drastically decrease the performance as no specialized hierarchies can be built without the RTE information. George. On Wed, Aug 10, 2016 at 3:57 AM, Gilles Gouaillardet <gil...@rist.or.jp> wrote: > Ralph, > > > i noticed dist-graph/distgraph_test_4 from the ibm test suite fails when > using a hostfile and running no task on the host running mpirun. > > n0$ mpirun --host n1:1,n2:1 -np 2 ./dist-graph/distgraph_test_4 > > > the root cause is OPAL_PMIX_NODEID is correctly set ( 0, 1, 2) by mpirun, > but for some reasons, orted sets it to -1 everywhere. > > an indirect consequence is a crash of the test (it believes tasks run on > zero distinct nodes instead of 2) > > > this occurs only master, and v2.x is fine. > > > Could you please have a look ? > > > Cheers, > > > Gilles > > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/devel >
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