On Mar 25, 2010, at 10:31 AM, Rolf Vandevaart wrote:
> You do not need to configure both IB ports or do IB bonding.
To hammer this point home: Open MPI will automatically use all ACTIVE
OpenFabrics ports that it can find, regardless of whether they have IPoIB setup
on them or not.
--
Jeff Squ
You need to ensure your cluster has some type of TCP connectivity. That
can be via a non-IB interface if you have that, or configure one of your
IB interfaces with IP. It is needed so the run-time environment can
start the job and exchange endpoint information to all the processes.
You do not
A quick question. Do I need to configure different IP for both IB ports
before running mpirun?
Or configure an IP and bond both IB ports? Or simply configure one IP for
ib0 is enough?
Thanks a lot.
PN
2010/3/25 Rolf Vandevaart
> They will automatically be used by the library. There is nothing
They will automatically be used by the library. There is nothing
special that you need to do. Unfortunately, there is no simple way to
tell if they are being used. I would suggest that you specifically call
them out in different calls to mpirun to make sure they are both
working. If they bo
Hi there,
We have a cluster with 2 HCAs installed on each node (Mellanox ConnectX IB
QDR cards). It's not clear from the documentation how we could use both of
them for MPI communications.
What should we do to enable 2 cards and how we can check that both are
using?
Thanks in advance!
Dmitry
