In this paper, we present the design of a VM-aware, high-performance cluster interconnect architecture over 10Gbps Ethernet. Our framework provides a direct data path to the NIC for applications that run on VMs, leaving non-critical paths (such as control) to be handled by intermediate virtualization layers. As a result, we are able to multiplex and prioritize network access per VM. We evaluate our design via a prototype implementation that integrates RDMA semantics into the privileged guest of the Xen virtualization platform. Our framework allows VMs to communicate with the network using a simple user-level RDMA protocol. Preliminary results show that our prototype achieves 681MiB/sec over generic 10GbE hardware and relieves the guest from CPU overheads, while limiting the guest's CPU utilisation to 34%. © 2012 Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Nanos, A., Nikoleris, N., Psomadakis, S., Kozyri, E., & Koziris, N. (2012). A smart HPC interconnect for clusters of virtual machines. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 7156 LNCS, pp. 398–406). Springer Verlag. https://doi.org/10.1007/978-3-642-29740-3_45
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