[Beowulf] torus versus (fat) tree topologies
cnsidero at syr.edu
Sun Nov 7 22:04:07 EST 2004
I looking for some general comments about the pros/cons of torus (2D/3D)
and (fat) tree network topologies, for HPC of course.
My investigation thus far has led me to believe that one reason a torus
topology might be better is because it eliminates the need for a switch.
On the other hand fat tree interconnects seem to dominate the
larger(est) clusters out there, why?
I'm looking more for comments about implementation and maintenance
experiences with either topology (or both). It seems that most of the
available high-performance network products give _roughly_ the same
overall performance so I don't want to start a long debate about the
competing products - just looking for topology differences, not company
A vs company B.
Thanks for any comments
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