An Admission Control System for QoS Provision on a Best-effort GALS Interconnect
S.Yang, S.B.Furber, Y.Shi, L.A.Plana
Abstract
A central admission control mechanism is introduced in order to provide
efficient Quality-of-Service (QoS) support for different types of application over
a
best-effort Globally-Asynchronous Locally-Synchronous (GALS) interconnect fabric.
The mechanism is applied at the ingress edges of the fabric using tokens to allocate
dynamic network resources and prevent network saturation. Analysis and simulation
results
are presented to show the effectiveness of the method. The control provides service
guarantees
on the network while using a modest physical area because of the simplicity of the
control logic.
This is a cost-effective way to provide QoS in packet-switched interconnect because
of its
independence from other network components.