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Week 9 Distributed (Modelling Grid Performance (Network congestion…

- - - - Install high throughput network infrastructure
        
        Does not require modification of code
        
        Expensive
        
        Guaranteed to work
      - Use bandwidth reservation
        
        QoS to reserve bandwidth for certain types of traffic
        
        Cheap
        
        Grid middleware may not support
        
        OS may not suport
        
        Sometimes even reserving doesnt do enough to get the bandwidth needed
        
        QoS not well supported in operational networks
        
        GARA (General-purpose Architecture for Reservation & Allocation)
        
        Does not support Service Level Aggreements (SLA) which is used in established QoS schemes
        
        Not OGSA compliant
        
        GRAAP (GGF Grid Resource Aggreement and Allocation Protocol)