Virtualization and InfiniBand
Posted Aug 7, 2009 18:37 UTC (Fri) by abacus
In reply to: Virtualization and InfiniBand
Parent article: AlacrityVM
> > This is because the IB stack has been designed for high throughput and low latency.
> As opposed to what? Doesn't every protocol seek to be fast? Does IB make different tradeoffs than the alternatives?
IB is a technology that comes from the supercomputing world and that has a higher throughput and a lower latency than any other popular storage or networking technology (IDE, SATA, 10 GbE, ...). Key features of IB are support for zero-copy I/O (RDMA) and the possibility of performing I/O without having to invoke any system call, even for user-space processes.
Some impressive graphs can be found in this paper: Performance Analysis and Evaluation of Mellanox ConnectX InfiniBand Architecture with Multi-Core Platforms.
Note: I'm not affiliated with any vendor of IB equipment.
to post comments)