I have inherited a 20-node cluster that supposedly has an infiniband
network. I am testing some mpi applications and am seeing no
performance improvement with multiple nodes. So I am wondering if the
Infiband network even works?
The output of ifconfig -a shows an ib0 and ib1 network. I ran ethtools
ib0 and it shows:
Speed: 40000Mb/s
Link detected: no
and for ib1 it show:
Speed: 10000Mb/s
Link detected: no
I am assuming this means it is down? Any idea how to debug further and
restart it?
Thanks!
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