[Lustre-discuss] lnet router tuning

Michael Kluge Michael.Kluge at tu-dresden.de
Mon Sep 13 08:46:41 PDT 2010


thanks a lot. That made my day.


Am 13.09.2010 um 06:49 schrieb Nic Henke:

> 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.
> Nic
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Michael Kluge, M.Sc.

Technische Universität Dresden
Center for Information Services and
High Performance Computing (ZIH)
D-01062 Dresden

Willersbau, Room WIL A 208
Phone:  (+49) 351 463-34217
Fax:    (+49) 351 463-37773
e-mail: michael.kluge at tu-dresden.de
WWW:    http://www.tu-dresden.de/zih

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