Bad Algorithm Burns $440 Million; Worst Software Testing Day EVER

Knight Capital, a firm that specializes in executing trades for retail brokers, took $440 million in cash losses Wednesday due to a faulty test of new trading software. In headlines it’s being called a trading “glitch,” which isn’t nearly as accurate as the term I’d use: “f**king disaster.” The broad outline of the story is here and more colorful, bloody details are here.

Briefly, here’s what happened: Knight Capital’s worst day in IT started Wednesday morning with a test run of their new trading software. An old pal of mine who’s following the story closely (and is also deep in both IT and trading) told me that the company set up the software to work with only a few stocks. They also set the buy/sell points well outside where the markets were currently trading to ensure that nothing would actually execute.

But somehow – and this will probably the be the subject of several lawsuits, books, and maybe even a Broadway musical – the software didn’t behave as expected. It went out and did what it was designed to do: execute lots and lots of trades very, very quickly.

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Radio Free HPC, Episode 3: Is LINPACK Obsolete?

A conversation with Jack Dongarra (of Top500 list fame) at ISC’12 is the inspiration for a spirited discussion of whether the venerable LINPACK benchmark has outlived its usefulness. Dan accuses Henry of cursing the darkness; then they talk about what…

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Radio Free HPC, Episode 2: When Technology Lies

What happens when technology lies to you? Dan rants about discovering that his exercise machine has been lying to him for more than a year now, but the episode (thankfully) evolves into a discussion of benchmarks and benchmarking. Bonus: one…

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Radio Free HPC, Episode 1: Data Integrity

Join Rich Brueckner of insideHPC, Henry Newman of Instrumental, Inc. and our own Dan Olds for this series of podcasts about all things HPC. In this first episode, the guys talk about Data Integrity and the menace of Silent Data…

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ISC’12: Tsinghua, NUDT Triumph in Kluster Kamph

The 2012 ISC Student Cluster Challenge ended last week, and it’s high time I write about the official announcement of the awards and analyze some of the results.

Each of the five teams put in months of work designing its cluster and learning how to optimize it to run the various benchmarks and application codes featured in the competition. They also had to stay on their toes, since the organizers were adding a secret ‘surprise’ application to the slate of apps to be run on Tuesday and Wednesday.

The award winners were announced at the closing ceremony on Wednesday afternoon. Gilad Shainer of the HPC Advisory Council, and overall organizer of the competition, acted as emcee. Short but inspirational addresses were given by ISC’s Thomas Meuer and Gerd Buettner from chief sponsor Airbus. The students were on the edges of their chairs as they waited out the program formalities in order to learn the results. ‘Read more’ to see results and team photos.

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ISC’12: Last Day: Stony Brook Struggles, but Overcomes

Stony Brook University (profile here) has had their work cut out for them at the 2012 ISC Student Cluster Competition. From the very beginning, they had software problems with their cluster, requiring them to concentrate on troubleshooting and repairing while…

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ISC’12: Last Day: Will GPUs Put NUDT Over the Top?

China’s National University of Defense Technology (NUDT, profile here) is staying true to its heritage by being the only team to use a hybrid CPU/GPU system at the ISC 2012 Student Cluster Competition in Hamburg. NUDT, like Team Tsinghua, had…

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ISC’12: Last Day: Tsinghua Looks for Win

The Tsinghua University team (profile here) didn’t take the easy way to the ISC 2012 Student Cluster Competition in Hamburg. They had to fight their way through five other universities, all competing to carry the Chinese flag, in an intra-country…

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