On Sat, 2007-04-28 at 10:11, Abhinav Vishnu wrote: > Hi Roland, > > On 4/26/07, Roland Dreier <[EMAIL PROTECTED]> wrote: > Abhinav> However, VAPI has an event which specifies the > successful > Abhinav> transition of MIGRATED -> ARMED (I know very > well, that > Abhinav> it is done through modify_qp). But just the > success of > Abhinav> modify_qp does not explicitly tell the time at > which the > Abhinav> transition successfully occured, does it? > > You don't know the time that the transition occurred, except > that it > is between when you called modify QP and when it > returned. But an > asynchronous event doesn't really help, does it? > > It does help. APM is not only defined for network fault tolerance, it > can > also be used for load-balancing. With this event, one can know when > the path is loaded and it is safe to call modify_qp. > > Also, do you have any script which can potentially bring a port down > from Active state, without actually unplugging the cable? Please let > me know.
ibportstate -- Hal > Thanks, > > :- Abhinav > > All an event would > tell you is that the transition occurred some time before the > event was > generated, which is some time before when the event was > delivered to you. > > Abhinav> Specifically: > > Abhinav> VAPI_PATH_MIG_ARMED would make my day. I believe > that > Abhinav> VAPI_QP_PATH_MIGRATED is similar to > Abhinav> IB_EVENT_PATH_MIG. Please correct me if i am > wrong. > > I see... VAPI_PATH_MIG_ARMED is a new event that was added > only in > VAPI 4.1.0, which was why I didn't know about it. Only > Mellanox HCAs > support it, it is not specified by the InfiniBand > architecture, and I > don't really see the point of it (as I tried to explain > above). > > - R. > > > > -- > Abhinav Vishnu > Graduate Student > Computer Science and Engineering > The Ohio State University > > ______________________________________________________________________ > > _______________________________________________ > general mailing list > [email protected] > http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
