This happens because we do not currently have a way to detect
connectivity without allocating ompi_proc_t's for every rank in the
window. I added the osc_rdma_btls MCA variable to act as a short-circuit
that avoids the costly connectivity lookup. By default the value is
ugni,openib. You can set it
Howard,
there is no rdma osc component in v2.x, so I doubt the issue occurs here.
I will double check this anyway on Monday
Cheers,
Gilles
On Sunday, November 15, 2015, Howard wrote:
>
> Hi Gilles
>
> Could you check whether you also see this problem with v2.x?
>
> Thanks,
>
> Howard
>
> Von
Hi Gilles
Could you check whether you also see this problem with v2.x?
Thanks,
Howard
Von meinem iPhone gesendet
> Am 10.11.2015 um 19:57 schrieb Gilles Gouaillardet :
>
> Nathan,
>
> a simple MPI_Win_create test hangs on my non uniform cluster
> (ibm/onesided/c_create)
>
> one node has a
