On 09:05 Mon 24 Sep , Eitan Zahavi wrote: > OpenSM will always use min-hop paths (no matter what routing algorithm
I would clarify here - For LMC > 0 OpenSM will choose different paths between _discovered_ shortest paths. For min-hop algorithm those shortest paths are real min-hops paths. For Up/Down it is min-hop paths which satisfies Up/Down constraint. > except maybe for LASH). For LASH too (LASH is abbreviation of "LAyered SHortest paths"). There a different layers (VLs in case of IB) are used for credit loops resolution. However current LASH implementation does not support LMC > 0. Sasha > If you use the default algorithms OpenSM will tend to spread traffic > such that if you have used LMC=1 (2 LIDs per port) > The two paths going to LID0 and LID1 will go through different systems > or if not possible through different nodes. > > EZ > > Eitan Zahavi > Senior Engineering Director, Software Architect > Mellanox Technologies LTD > Tel:+972-4-9097208 > Fax:+972-4-9593245 > P.O. Box 586 Yokneam 20692 ISRAEL > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > Keshetti Mahesh > > Sent: Monday, September 24, 2007 8:54 AM > > To: openIB > > Subject: [ofa-general] Re: [query] Multi path discovery in openSM > > > > > > If there are multiple paths between two end nodes in a > > network and I > > > > set the LMC > 0 then whether the openSM itself identifies those > > > > routes and updates the switch forwarding tables or is it > > the duty of > > > > some other consumer ?? > > > > > > OpenSM. > > > > I am using min-hop algorithm with openSM. > > Now in this case, if there are multiple paths (some are not > > min-hop paths) will the openSM(LMC > 0) configure those paths? > > > > regards, > > Mahesh > > _______________________________________________ > > general mailing list > > general@lists.openfabrics.org > > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > > > To unsubscribe, please visit > > http://openib.org/mailman/listinfo/openib-general > > > _______________________________________________ > general mailing list > general@lists.openfabrics.org > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ general mailing list general@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
