All posts by Brian Klaff

Establishing a High Performance Cloud with Mellanox CloudX

When it comes to advanced scientific and computational research in Australia, the leading organization is the National Computational Infrastructure (NCI).  NCI was tasked to form a national research cloud, as part of a government effort to connect eight geographically distinct Australian universities and research institutions into a single national cloud system.

 

NCI decided to establish a high-performance cloud, based on Mellanox 56Gb/s Ethernet solutions.  NCI, home to the Southern Hemisphere’s most powerful supercomputer, is hosted by the Australian National University and supported by three government agencies: Geoscience Australia, the Bureau of Meteorology, and the Commonwealth Scientific and Industrial Research Organisation (CSIRO).

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Introduction to InfiniBand

InfiniBand is a network communications protocol that offers a switch-based fabric of point-to-point bi-directional serial links between processor nodes, as well as between processor nodes and input/output nodes, such as disks or storage. Every link has exactly one device connected to each end of the link, such that the characteristics controlling the transmission (sending and receiving) at each end are well defined and controlled.

 

InfiniBand creates a private, protected channel directly between the nodes via switches, and facilitates data and message movement without CPU involvement with Remote Direct Memory Access (RDMA) and Send/Receive offloads that are managed and performed by InfiniBand adapters. The adapters are connected on one end to the CPU over a PCI Express interface and to the InfiniBand subnet through InfiniBand network ports on the other. This provides distinct advantages over other network communications protocols, including higher bandwidth, lower latency, and enhanced scalability.

Figure 1: Basic InfiniBand Structure
Figure 1: Basic InfiniBand Structure

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Accelerating Genomic Analysis

One of the biggest catchphrases in modern science is Human Genome–the DNA coding that largely pre-determines who we are and many of our medical outcomes. By mapping and analyzing the structure of the human genetic code, scientists and doctors have already started to identify the causes of many diseases and to pinpoint effective treatments based on the specific genetic sequence of a given patient. With the advanced data that such analysis provides, doctors can offer more targeted strategies for potentially terminal patients at times when no other clinically relevant treatment options exist.

Brian Klaff 072314 Dell Genome
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RoCE in the Data Center

Today’s data centers demand that the underlying interconnect provide the utmost bandwidth and extremely low latency. While high bandwidth is important, it is not worth much without low latency. Moving large amounts of data through a network can be achieved with TCP/IP, but only RDMA can produce the low latency that avoids costly transmission delays.

The speedy transfer of data is critical to it being used efficiently. Interconnect based on Remote Direct Memory Access (RDMA) offers the ideal option for boosting data center efficiency, reducing overall complexity, and increasing data delivery performance. Mellanox RDMA enables sub-microsecond latency and up to 56Gb/s bandwidth, translating to screamingly fast application performance, better storage and data center utilization, and simplified network management.

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