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Thomas Green

Thomas Green

Worked at the Met Office between 2006 and 2013, since 2013 supporting researchers at Cardiff University.

Latest posts

Accelerate your work

Accelerate your work

Posted on 28 September 2017 by Thomas Green

The use of multi-processing is now becoming the "norm" with multiple cores now available in many consumer PCs and laptops. It is now much easier to start experimenting with speeding […]

Finding the key to your locks

Finding the key to your locks

Posted on 24 November 2016 by Thomas Green

Websites can be very useful for HPC to allow easier access. Recently we had an issue with a website we use and learned a few things on the way. Know […]

Mods and rockers

Mods and rockers

Posted on 29 September 2016 by Thomas Green

Modules are used on many supercomputers since it allows multiple versions of software to be easily chosen to be loaded into a users environment. We would now like to show […]

What’s up, Doc?

What’s up, Doc?

Posted on 19 August 2016 by Thomas Green

I am not sure whether Bugs Bunny was refering to documentation but we shall assume it does for this post. Documentation can be a dreaded or loved term which may […]

The art of restarting

The art of restarting

Posted on 27 April 2016 by Thomas Green

Limits on runtimes Running jobs on a supercomputer can sometimes involve letting the job run for a long time. A long time in this instance is longer than the default […]

Waving hello to gravity

Waving hello to gravity

Posted on 22 February 2016 by Thomas Green

The recent announcement, see BBC article, by LIGO (Laser Interferometer Gravitational-Wave Observatory) of the observation of gravitational waves by their detectors in September 2015 has been described as one of […]

Perls of wisdom

Perls of wisdom

Posted on 9 November 2015 by Thomas Green

It has been a long summer and it is time again to create a little post for a recent encounter on our supercomputer. Errors in Perl Perl is a common […]

Summarising job performance

Summarising job performance

Posted on 13 August 2015 by Thomas Green

Recently we have implements an automatic job summary which is printed at the end of a user's job that run on our supercomputer at Cardiff University. These job summaries are […]

Research seminar – Accelerating computing

Research seminar – Accelerating computing

Posted on 2 July 2015 by Thomas Green

Using accelerators such as GPUs and Intel Phi technologies are becoming a popular method to extend the performance of certains codes. ARCCA is holding a research seminar which covers this […]

Floating in numbers

Floating in numbers

Posted on 26 June 2015 by Thomas Green

Just like an iceberg, floating point numbers can have hidden danger lurking just under the surface. A recent email through a mailing list reminded me about the subtlties of handling […]