How do you calculate bisection bandwidth?
For Hyper-cube topology with n nodes, n/2 links should be broken to bisect the network, so bisection bandwidth is bandwidth of n/2 links.
What is bisection width & bisection bandwidth?
● Bisection width = minimum number of links cut to. divide the network into two halves. ● Bisection bandwidth = bandwidth of above.
What is full bisection bandwidth?
The full bisection bandwidth allows one half of the network nodes to communicate simultaneously with the other half of the nodes. Assume that half of the nodes inject data into the network at a rate B Mbps. When the bisection bandwidth is B then the network has full bisection bandwidth.
What is the different between bisection width and the diameter of a network topology for a distributed memory architecture?
Diameter: The diameter (diam) of a network is the length of the longest of all shortest paths between any two nodes. Bisection-width: The bisection-width (bw) of a network is the minimum number of edges (or links) to be removed to disconnect the network into two halves of equal size.
What is torus topology?
Abstract: Torus networks are an attractive topology in supercomputing, balancing the tradeoff between network diameter and hardware costs. The nodes in a torus network are connected in a k-dimensional wrap-around mesh where each node has 2k neighbors.
What is star in network topology?
A star network is a local area network (LAN) topology in which all nodes — personal computers (PCs), workstations or other devices — are directly connected to a common central computer that is often referred to as a hub. Therefore, a star network is often referred to as a hub-and-spoke network topology.
What is torus in parallel processing computing?
A torus interconnect is a switch-less network topology for connecting processing nodes in a parallel computer system.
What is a torus network?
What is e cube routing?
E-Cube routing is a static routing method that employs XY-routing algorithm. This is commonly referred to as Deterministic, Dimension Ordered Routing model. E-Cube routing works by traversing the network in the kth dimension where k is the least significant non-zero bit in the result of calculating distance.
What makes a torus special?
The torus is the only surface which can be endowed with a metric of vanishing curvature. It is the only parallelizable surface. It is the only surface which can be turned into a topological group.
Is a 3 torus flat?
The three-dimensional torus is just one of 10 different flat finite worlds. There are also flat infinite worlds such as the three-dimensional analogue of an infinite cylinder.
What is•bisection bandwidth?
•Bisection Bandwidth –Often used to describe network performance –Cut network in half and sum bandwidth of links severed –(Min # channels spanning two halves) * (BW of each channel) –Meaningful only for recursive topologies –Can be misleading, because does not account for switch and routing efficiency Bisection Bandwidth
How many links should be broken to bisect the network?
For linear array only one link needs to be broken to bisect the network into two partitions. For ring topology with n nodes two links should be broken to bisect the network, so bisection bandwidth becomes bandwidth of two links.
What is the bisection bandwidth of a hyper-cube?
For tree topology with n nodes can be bisected at the root by breaking one link, so bisection bandwidth is one link bandwidth. links. For Hyper-cube topology with n nodes, n/2 links should be broken to bisect the network, so bisection bandwidth is bandwidth of n/2 links.