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Wall Street and Data Analytics, They Are Only As Good As The Network That Connects Them

HPC on Wall StreetAt this years’ 2013 High Performance Computing on Wall Street once again the greatest minds from the financial services industry gathered to discuss the latest technology trends that give financial firms a technology edge in accessing information in real-time to better predict where markets are going and the best areas to invest.

Many vendors delivered their latest innovation data analytics software that can analyze market data in real-time, but without the right infrastructure, traders can be delayed in executing on that information. Trading smarter is the key underlying theme by which the fabric can provide greater transparency and enhance application delivery that impacts the business. Read More »

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usNIC released!

I’m excited to announce that Cisco has just released usNIC as a feature of the UCS C-Series Rack Servers product line.

usNIC is available since the release 1.5(2) of the Cisco UCS C-Series Integrated Management Controller.

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Why is SR-IOV relevant in the HPC world ?

One feature of the usNIC ultra-low latency Ethernet solution for the UCS Cisco VIC that we think is interesting is the fact that it is based on SR-IOV.

What is SR-IOV, and why is it relevant in the HPC world?

SR-IOV (Single Root I/O Virtualization) is commonly used in the server virtualization world. The most commonly described purpose of SR-IOV in the hypervisor world is to allow a device partition, called VF (Virtual Function), to be mapped in the guest operating system address space. This allows the guest operating system to enjoy higher I/O performance and lower CPU utilization as compared to the alternative: software-emulated devices that are traditionally implemented in hypervisors.

Compared to the old world before hypervisors came along, that use of SR-IOV seems to allow to regain back some performance lost due to the hypervisor software intervention in the I/O data path. But why should I care about SR-IOV in the world of my network-latency-bound HPC applications running on common operating systems on bare metal servers?

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MPI newbie: Requirements and installation of an MPI

July 31, 2013 at 9:00 am PST

I often get questions from those who are just starting with MPI; they want to know common things such as:

  • How to install / setup an MPI implementation
  • How to compile their MPI applications
  • How to run their MPI applications
  • How to learn more about MPI

This will be the first blog entry of several that attempts to guide MPI newbies down the parallelization path.

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Short message latency and NUMA effects

July 23, 2013 at 5:00 am PST

I’ve previously written a bunch about the effects of location, Location, LOCATION! on MPI applications.

Here’s another subtle NUMA effect that a well-tuned MPI implementation can hide from you: intelligently distributing traffic between multiple network interfaces.

Yeah, yeah, most MPI implementations have had so-called “multi-rail” support for a long time (i.e., using multiple network interfaces for MPI traffic).  But there’s more to it than that.

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