[NRG] Reminder: NRG Meeting: Cloud Network Sharing (Yuefeng Wang) @ Mon Nov 4, 2013 11am - 12pm (NRG Calendar)

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Sun Nov 3 11:00:08 EST 2013

This is a reminder for:

Title: NRG Meeting: Cloud Network Sharing (Yuefeng Wang)
Presenter: Yuefeng Wang

Paper 1: FairCloud: Sharing the Network in Cloud Computing [From SIGCOMM  

Author: Lucian Popa, Gautam Kumar, Mosharaf Chowdhury, Arvind  
Krishnamurthy, Sylvia Ratnasamy and Ion Stoica


The network, similar to CPU and memory, is a critical and shared resource  
in the cloud. However, unlike other resources, it is neither shared  
proportionally to payment, nor do cloud providers offer minimum guarantees  
on network bandwidth. The reason networks are more difficult to share is  
because the network allocation of a virtual machine (VM) X depends not only  
on the VMs running on the same machine with X, but also on the other VMs  
that X communicates with and the cross-traffic on each link used by X. In  
this paper, we start from the above requirements–payment proportionality  
and minimum guarantees and show that the network-specific challenges lead  
to fundamental tradeoffs when sharing cloud networks. We then propose a set  
of properties to explicitly express these tradeoffs. Finally, we present  
three allocation policies that allow us to navigate the tradeoff space. We  
evaluate their characteristics through simulation and testbed experiments  
to show that they can provide minimum guarantees and achieve better  
proportionality than existing solutions.

Paper 2: Chatty Tenants and the Cloud Network Sharing Problem [From NSDI  

Author:  Hitesh Ballani, Keon Jang, Thomas Karagiannis, Changhoon Kim,  
Dinan Gunawardena and Greg O’Shea


The emerging ecosystem of cloud applications leads to significant  
inter-tenant communication across a datacenter’s internal network. This  
poses new challenges for
cloud network sharing. Richer inter-tenant traffic patterns make it hard to  
offer minimum bandwidth guarantees to tenants. Further, for communication  
between economically distinct entities, it is not clear whose payment  
should dictate the network allocation. Motivated by this, we study how a  
cloud network that carries both intra- and inter-tenant traffic should be  
shared. We argue for network allocations to be dictated by the least-paying  
of communication partners. This, when combined with careful VM placement,  
achieves the complementary goals of providing tenants with minimum  
bandwidth guarantees while bounding their maximum network impact. Through a  
prototype deployment and large-scale simulations, we show that minimum  
bandwidth guarantees, apart from helping tenants achieve predictable  
performance, also improve overall
datacenter throughput. Further, bounding a tenant’s maximum impact  
mitigates malicious behavior.

When: Mon Nov 4, 2013 11am – 12pm Eastern Time
Where: MCS-148, 111 Cummington Mall, Boston, MA 02215
Calendar: NRG Calendar
     * Larissa Spinelli - creator

Event details:  

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