Virtualizing I/O Devices on VMware Workstation's Hosted Virtual Machine Monitor
Proceedings of the General Track: 2002 USENIX Annual Technical Conference
Towards virtual networks for virtual machine grid computing
VM'04 Proceedings of the 3rd conference on Virtual Machine Research And Technology Symposium - Volume 3
High performance VMM-bypass I/O in virtual machines
ATEC '06 Proceedings of the annual conference on USENIX '06 Annual Technical Conference
PCP: efficient endpoint congestion control
NSDI'06 Proceedings of the 3rd conference on Networked Systems Design & Implementation - Volume 3
Transparent network services via a virtual traffic layer for virtual machines
Proceedings of the 16th international symposium on High performance distributed computing
High performance and scalable I/O virtualization via self-virtualized devices
Proceedings of the 16th international symposium on High performance distributed computing
Performance analysis and comparison of interrupt-handling schemes in gigabit networks
Computer Communications
Increasing application performance in virtual environments through run-time inference and adaptation
HPDC '05 Proceedings of the High Performance Distributed Computing, 2005. HPDC-14. Proceedings. 14th IEEE International Symposium
Cassandra: structured storage system on a P2P network
Proceedings of the 28th ACM symposium on Principles of distributed computing
Investigating virtual passthrough I/O on commodity devices
ACM SIGOPS Operating Systems Review
On the design of scalable, self-configuring virtual networks
Proceedings of the Conference on High Performance Computing Networking, Storage and Analysis
The impact of virtualization on network performance of amazon EC2 data center
INFOCOM'10 Proceedings of the 29th conference on Information communications
Minimal-overhead virtualization of a large scale supercomputer
Proceedings of the 7th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
CLUSTER '11 Proceedings of the 2011 IEEE International Conference on Cluster Computing
VNET/P: bridging the cloud and high performance computing through fast overlay networking
Proceedings of the 21st international symposium on High-Performance Parallel and Distributed Computing
TCP Vegas: end to end congestion avoidance on a global Internet
IEEE Journal on Selected Areas in Communications
Virtual TCP offload: optimizing ethernet overlay performance on advanced interconnects
Proceedings of the 22nd international symposium on High-performance parallel and distributed computing
TCNet: cross-node virtual machine communication acceleration
Proceedings of the ACM International Conference on Computing Frontiers
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Overlay-based virtual networking provides a powerful model for realizing virtual distributed and parallel computing systems with strong isolation, portability, and recoverability properties. However, in extremely high throughput and low latency networks, such overlays can suffer from bandwidth and latency limitations, which is of particular concern if we want to apply the model in HPC environments. Through careful study of an existing very high performance overlay-based virtual network system, we have identified two core issues limiting performance: delayed and/or excessive virtual interrupt delivery into guests, and copies between host and guest data buffers done during encapsulation. We respond with two novel optimizations: optimistic, timer-free virtual interrupt injection, and zero-copy cut-through data forwarding. These optimizations improve the latency and bandwidth of the overlay network on 10 Gbps interconnects, resulting in near-native performance for a wide range of microbenchmarks and MPI application benchmarks.