Bump. Also, when using a mesh topology, why are a bunch of DMA_Controllers needed? -Joseph
On Fri, Feb 11, 2011 at 3:21 PM, Joseph Pusdesris <[email protected]> wrote: > Hi everyone, I have a few updated questions to ask. This is particularly > aimed at Brad, but if anyone else knows, I would love some answers. > > > > Why are there n+1 switches rather than just one in the crossbar definition? > > That is to ask, why couldn't this snippet: > >> ext_links = [ExtLink(ext_node=n, int_node=i) >> for (i, n) in enumerate(nodes)] >> xbar = len(nodes) # node ID for crossbar switch >> int_links = [IntLink(node_a=i, node_b=xbar) for i in range(len(nodes))] >> return Crossbar(ext_links=ext_links, int_links=int_links, >> num_int_nodes=len(nodes)+1) > > > Instead be implemented as so?: > >> ext_links = [ExtLink(ext_node=n, int_node=0) >> for (i, n) in enumerate(nodes)] >> int_links = [] >> return Crossbar(ext_links=ext_links, int_links=int_links, >> num_int_nodes=1) > > > > What is the status of garnet? I haven't seen much discussion of it on > either mailing list. > > Is a Bus interconnect possible using either of the ruby network models? > From what I can tell it's not. The gems-users mailing list seemed to > agree. > > -Joseph > >
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