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
Nathan,
a simple MPI_Win_create test hangs on my non uniform cluster
(ibm/onesided/c_create)
one node has an IB card but not the other one.
the node with the IB card select the rdma osc module, but the other node
select the pt2pt module.
and then it hangs because both ends do no try to initi
