Hi,
You can select ib device used with openib btl by using follow parametres:
MCA btl: parameter "btl_openib_if_include" (current value: <none>, data
source: default value)
Comma-delimited list of devices/ports to be
used (e.g. "mthca0,mthca1:2"; empty value means to
use all ports found). Mutually exclusive with
btl_openib_if_exclude.
MCA btl: parameter "btl_openib_if_exclude" (current value: <none>, data
source: default value)
Comma-delimited list of device/ports to be
excluded (empty value means to not exclude any
ports). Mutually exclusive with
btl_openib_if_include.
For example, if you want to use first port on mthc0 you command line
will look like:
mpirun -np............. --mca btl_openib_if_include mthca0:1 ....
Pasha
nee...@crlindia.com wrote:
Hi all,
I have a cluster where both HCA's of blade are active, but
connected to different subnet.
Is there an option in MPI to select one HCA out of available
one's? I know it can be done by making changes in openmpi code, but i
need clean interface like option during mpi launch time to select
mthca0 or mthca1?
Any help is appreciated. Btw i just checked Mvapich and
feature is there inside.
Regards
Neeraj Chourasia (MTS)
Computational Research Laboratories Ltd.
(A wholly Owned Subsidiary of TATA SONS Ltd)
B-101, ICC Trade Towers, Senapati Bapat Road
Pune 411016 (Mah) INDIA
(O) +91-20-6620 9863 (Fax) +91-20-6620 9862
M: +91.9225520634
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