Bisection width

Bidirectional Unks are sometimes counted only as one link for the purpose of determining Be, and a bisection width of p/2 then corresponds to a full bisection width network. 

Well-known network topologies and their performance characteristics. The network degree is the number of links supported by each simple switch, and p is the number of processors Whop is the maximum number of switches through which data must pass, and Be and nsw represent the bisection width and the number of simple switching elements, respectively... 

The cost of a fat tree network can be reduced by making the tree oversubscribed. An oversubscribed fat tree has more downward links than upward links at one or more stages in the tree, and it has a reduced bisection width. Be if the bisection width has been reduced by a factor of a by oversubscription, that is. Be = p/fl, the tree is said to be a-to-one oversubscribed. A two-to-one oversubscribed fat tree is shown in Figure 2.12 in this network, the switches in the first stage are each cormected to four nodes but have only two links to the switches in the second stage. 

Peak width at half-height. Wq 5. The length of the line parallel to the peak base, which bisects the peak height and terminates at the intersections with the two limbs of the peak, projected on to the axis representing time or volume. 

The greater width of the chain in the amphibole minerals means that there are more types of cation sites for the non-tetrahedral cations. These are, as for the pyroxenes, labeled as M-sites. The scheme is that the structure can be split by a plane bisecting the center of the double chains. The M-site which lies on this plane is M3, the sites lying on just on either side of the plane are the Ml sites, the one lying further away are the M2 sites and furthest away and containing the calcium in the clinoamphiboles are the M4 sites. 

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