On Tue, 2006-01-31 at 14:01, Sean Hefty wrote: > Hal Rosenstock wrote: > >>I see where a MultiPathRecord contains a path independence field. But > >>since it > >>only provides a single value for all other PathRecord fields for all > >>SGID/DGID > >>pairs, it seems less flexible than PathRecords. > > > > It depends on whether those components are wildcarded or not. > > I was referring to the query response.
The query response is PathRecords not MultiPathRecords. > > >>It's also missing LID information, > > > > Yes but is LID needed in the query ? > > It's needed for connection establishment and QP modification. but in the response, right ? > >>and limits the number of DGIDs to 255. > > > > Actually the number if lower as I think it is limited by the remaining > > bits in the component mask. > > For a fabric with 1000 or more nodes, the MultiPathRecord only returns paths > to > 255 of the nodes, and then only if their path information matches. (This is > part of why I'm confused about how to actually use a MultiPathRecord.) You can wildcard the DGID (and DGIDCount). > From what I can tell, a MultiPathRecord does not eliminate the need to > obtain > PathRecords, It's a better way to get PathRecords. > and only provides a 2-bit path independence field that's always set > to 1. It seems like I'm missing something here. Aside from the independence field, there's 2 new fields" SGID/DGIDScope to be used for explicit/node/system GID indication. -- Hal _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
