Hal Rosenstock wrote: > Makia, > > On Wed, 2006-11-01 at 17:42, Makia Minich wrote: >> It just so happens that we've started looking at this here at ORNL as >> well. I had a question about the options. The manpage makes it seem >> that you can set these qos options (e.g. qos_high_limit) from the >> command line, but I haven't been overly successful. > > What are you referring to in the man page ?
OK, re-reading the man page section on qos, I now realize that I didn't understand the statement "cached options file" on my initial read through. So, now I've got it. > Which OpenSM are you using (trunk or 1.1 based) ? 1.1 based >> Is there an example of this being done? > > Yes in both the man page under QOS CONFIGURATION or under > osm/doc/qos-config.txt in the repository. I see that that file doesn't install in the doc directory with OFED, perhaps that should be added (so that I can find it in the ${OFED}/doc directory). >> Or is changing the /var/cache/osm/opensm.opts file >> the preferred method of changing the options? > > I think it's the only way but it is imperative QoS is enabled for this > to have any effect. > > -- Hal That part I've got set in the opensm.opts file: no_qos FALSE >> Sasha Khapyorsky wrote: >>> On 16:52 Wed 01 Nov , Oliver wrote: >>>> Hi, folks - >>>> >>>> I am trying to verify and evaluate IB QoS support, running openSM as >>>> subnet manager. The perftest program is extended to set SL as command >>>> line options instead of default 0, and by modifying VL arbitration >>>> tables, I am expecting to see the traffic shaping can actually take >>>> place, but it did not. More details on configuration: >>>> >>>> in opensm.opts: >>>> # QoS default options >>>> qos_high_limit 255 # disable low priority table >>>> qos_vlarb_high: 0:4,1:4,2:8,3:0, 4:0 .... # this is to give VL 2 >>>> (corresponding to SL 2) a higher weight 8 >>>> qos_sl2vl 0,1,2,3,4, ... # no changes here >>>> >>>> I think (though not verified) the Voltaire HCA we are using can >>>> support 8 data VLs. I don't have much more information to go on why >>>> qos shaping is not taking place, any suggestions? >>> You can verify actual port's parameters with smpquery (from diags), you >>> will need to run to get QoS related parameters: >>> >>> smpquery portinfo ... >>> smpquery vlarb ... >>> smpquery sl2vl ... >>> >>> Sasha >>> >>>> A related question is, if I modify qos setting in SM, do I need to >>>> restart SA on each hosts for it to see the changes? (I am hoping not, >>>> as I tried in the test, it doesn't seem to make a difference) >>>> >>>> Thanks for help. >>>> -- >>>> Oliver >>>> >>>> _______________________________________________ >>>> openib-general mailing list >>>> openib-general@openib.org >>>> http://openib.org/mailman/listinfo/openib-general >>>> >>>> To unsubscribe, please visit >>>> http://openib.org/mailman/listinfo/openib-general >>>> >>> _______________________________________________ >>> openib-general mailing list >>> openib-general@openib.org >>> http://openib.org/mailman/listinfo/openib-general >>> >>> To unsubscribe, please visit >>> http://openib.org/mailman/listinfo/openib-general >>> >>> > > -- Makia Minich <[EMAIL PROTECTED]> National Center for Computation Science Oak Ridge National Laboratory Phone: 865.574.7460 _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general