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The shared nature of cloud network infrastructures causes unpredictable network performance, which may degrade the performance of these applications. Recently, several works propose to explicitly reserve the network bandwidth in the cloud with virtual network abstraction models, which pre-specify the network bandwidth between virtual machines (VMs) for a tenant job. However, the pre-specification...
FPGAs (Field Programmable Gate Arrays) are making their way into data centers (DC). They are used as accelerators to boost the compute power of individual server nodes and to improve the overall power efficiency. Meanwhile, DC infrastructures are being redesigned to pack ever more compute capacity into the same volume and power envelops. This redesign leads to the disaggregation of the server and...
Data center networks with random topologies provide several promising features, such as near-optimal bisection bandwidth and flexibility of incremental growth. However, network failures are ubiquitous and significantly affect the performance of cloud services, such as availability and bandwidth. Existing random topology based data centers do not provide specific fault-tolerance mechanisms to recover...
The knowledge of service performance of cloud providers is essential for cloud service users to choose the cloud services that meet their requirements. Instantaneous performance readings are accessible, but prolonged observations provide more reliable information. However, due to technical complexities and costs of monitoring services, it may not be possible to access the service performance of cloud...
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