[Lustre-discuss] lnet router tuning

Nic Henke nic at cray.com
Mon Sep 13 06:49:58 PDT 2010

On 09/13/2010 08:35 AM, Michael Kluge wrote:
> Hi Eric,
> basically right now I have one IB node, one 10GE node and one router
> node that has both types of network interfaces.
> I've got a small lnet test script on the router node, that does the work:
> export LST_SESSION=$$
> lst new_session rw
> lst add_group readers at tcp
> lst add_group writers at o2ib
> lst add_batch bulk_rw
> lst add_test --batch bulk_rw --from writers --to readers brw read
> check=simple size=1M
> lst run bulk_rw
> lst stat writers & sleep 30; kill $!
> lst end_session
> Is there a way to figure out the messages in flight? I remember to have
> a "rpc's in flight" tunable but this is connected to the OSC layer which
> does not do anything in my case (I think).

If you don't specify --concurrency to the 'lst add_test', you get 1 RPC 
in flight.


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