> Quoting Tang, Changqing <[EMAIL PROTECTED]>: > Subject: RE: RFCv2: SRC API > > > > > > > Is there any performance worry to let j2(the first job on a > > node) to > > > do all the "work" ? > > > > How do you mean? > > I mean that j2 has all the QP connections with all other remote jobs, so > j2 does not save anything compared with non-SRC case, can this affect > j2's performance ? > > I have another question, when using SRQ, or SRC+SRQ, when a completion > is returned by ibv_poll_cq(), is there an easy way to find who sent > this message to me ? 'struct ibv_wc' does not say much about the message > source rank. The only field is 'src_qp', but I can not find any document > about how to use it.
There's also qp_num. > Is there any way to return some kind of "source context" ? > > Or do you think this is application's responsibility to figure out > source rank from the message itself ? I hope the source rank can be > identified before parsing the message. > > Thanks. How about using send with immediate, and sticking the rank in the immediate data? -- MST _______________________________________________ ewg mailing list ewg@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/ewg