Oversubscription Ratio
The ratio of the total bandwidth of all links at a lower layer to the bandwidth of links at the upper layer. It is a key parameter in hierarchical network design and affects both cost and the ability to absorb burst traffic.
Timeline (last 90 days)
The oversubscription ratio refers to the ratio of the total bandwidth of all links at the lower layer to the bandwidth of links at the upper layer.
In hierarchical networks, oversubscription ratios usually compound layer by layer, causing end-to-end available bandwidth to be far below the theoretical peak.
Hierarchical networks often adopt a design of high bandwidth within racks and oversubscription between racks, but the global communication pattern of All-Reduce raises the share of cross-layer traffic, thereby amplifying the oversubscription bottleneck.
All Facts (3)
The oversubscription ratio refers to the ratio of the total bandwidth of all links at the lower layer to the bandwidth of links at the upper layer.
50%UnverifiedIn hierarchical networks, oversubscription ratios usually compound layer by layer, causing end-to-end available bandwidth to be far below the theoretical peak.
50%UnverifiedHierarchical networks often adopt a design of high bandwidth within racks and oversubscription between racks, but the global communication pattern of All-Reduce raises the share of cross-layer traffic, thereby amplifying the oversubscription bottleneck.
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