Adrian, about the "[n050409][[36216,1],1][btl_openib_xrc.c:58:mca_btl_openib_xrc_check_api] XRC error: bad XRC API (require XRC from OFED pre 3.12). " message.
this means ompi was built on a system with OFED 3.12 or greater, and you are running on a system with an earlier OFED release. please not Jeff recently pushed a patch related to that and this message might be a false positive. Cheers, Gilles On 2015/01/19 14:17, Gilles Gouaillardet wrote: > Adrian, > > i just fixed this in the master > (https://github.com/open-mpi/ompi/commit/d14daf40d041f7a0a8e9d85b3bfd5eb570495fd2) > > the root cause is a corner case was not handled correctly : > > MPI_Type_hvector(20000, 1, 0, MPI_INT, &type); > > type has extent = 4 *but* size = 80000 > ob1 used to test only the extent to determine whether the message should > be sent inlined or not > extent <= 256 means try to send the message inline > that meant a fragment of size 80000 (which is greater than 65536 e.g. > max default size for IB) was allocated, > and that failed. > > now both extent and size are tested, so the message is not sent inline, > and it just works. > > Cheers, > > 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/2015/01/16798.php
